<LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal"> <RelativeLayout android:id="@+id/poi_list_container" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:background="@drawable/bg_list_circular" android:visibility="gone"> <ListView android:id="@+id/poi_list" android:layout_width="match_parent" android:layout_height="match_parent" android:hardwareAccelerated="true" android:scrollbars="none" /> </RelativeLayout> <com.baidu.mapapi.map.MapView android:id="@+id/bmapView" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="1" android:clickable="true" android:focusable="true" android:hardwareAccelerated="true" /> </LinearLayout> 我想要的结果是 将RelativeLayout包裹的listview放到mapview之后,并且显示在布局的左侧,不占用mapview的空间 ,listview显示出来了,但是它首次加载时listview设置数据了才会显示,这时候mapview向右侧移动,导致出现黑屏,我要解决的是这个问题
时间: 2023-07-19 11:48:11 浏览: 183
这个问题的原因是在listView首次加载时,需要加载数据,这个过程可能需要一些时间,而在这个过程中,mapView可能会先进行绘制,导致出现黑屏。解决这个问题的方法是在listView加载数据之前,先将listView设置为不可见,等数据加载完成后再将其设置为可见。这样就可以避免在数据加载的过程中出现黑屏的情况了。你可以在代码中尝试一下这个方法,看看是否有效。
相关问题
<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#fff2f2f2" tools:context="com.hik.netsdk.SimpleDemo.View.MainActivity"> <RelativeLayout android:id="@+id/ra_title" android:layout_width="match_parent" android:layout_height="44dp" android:background="@mipmap/title_bg"> <TextView android:id="@+id/titlename" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:layout_gravity="center" android:text="易丰视频监控" android:textColor="@android:color/white" android:textSize="18sp" /> <ImageButton android:id="@+id/back" android:layout_width="40dp" android:layout_height="match_parent" android:background="@null" android:paddingLeft="10dp" android:contentDescription="视频插件" android:src="@mipmap/img_back" /> <ImageButton android:id="@+id/ib_rotate" android:layout_width="50dp" android:layout_height="match_parent" android:layout_alignParentRight="true" android:onClick="changeScreen" android:layout_marginRight="6dp" android:scaleType="centerInside" android:background="@drawable/gps_select" android:contentDescription="视频插件" android:src="@mipmap/ic_size_sel" /> </RelativeLayout> <RelativeLayout android:id="@+id/rl_control" android:layout_width="match_parent" android:layout_height="266dp" android:layout_alignParentBottom="true" > <LinearLayout android:id="@+id/ll_center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerInParent="true" android:background="@mipmap/ycjk_yp" android:orientation="vertical" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb1" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb2" /> <ImageButton android:visibility="gone" android:id="@+id/left_up" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@null" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb3" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb4" /> </LinearLayout> <ImageButton android:id="@+id/ptz_top_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@drawable/nnew_video_up" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb1" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb3" /> <ImageButton android:visibility="gone" android:id="@+id/right_up" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb2" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb4" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="match_parent" > <ImageButton android:id="@+id/ptz_left_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@drawable/nnew_video_left" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_zj" /> <ImageButton android:id="@+id/ptz_right_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:contentDescription="视频插件" android:background="@drawable/nnew_video_right" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal" > <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb4" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb2" /> <ImageButton android:visibility="gone" android:id="@+id/left_down" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb3" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb1" /> </LinearLayout> <ImageButton android:id="@+id/ptz_bottom_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@drawable/nnew_video_down" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb4" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" > <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:contentDescription="视频插件" android:background="@mipmap/ycjk_kb3" /> <ImageButton android:visibility="gone" android:id="@+id/right_down" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@null" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@mipmap/ycjk_kb2" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:minWidth="48dp" android:minHeight="48dp" android:padding="12dp" android:background="@mipmap/ycjk_kb1" /> </LinearLayout> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_toLeftOf="@id/ll_center" android:gravity="center" android:orientation="vertical" > <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/focus_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more1" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@color/black" android:textSize="16dp" android:text="焦距 +" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical" > <ImageButton android:id="@+id/guangquan_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more3" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@color/black" android:text="光圈 +" android:contentDescription="视频插件" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical" > <ImageButton android:id="@+id/zoom_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more5" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@color/black" android:text="变倍 +" android:textSize="16dp" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_toRightOf="@id/ll_center" android:gravity="center" android:orientation="vertical" > <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical" > <ImageButton android:id="@+id/foucus_reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more2" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@color/black" android:text="焦距 -" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical" > <ImageButton android:id="@+id/guangquan_reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more4" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@color/black" android:text="光圈 -" android:contentDescription="视频插件" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical" > <ImageButton android:id="@+id/zoom_reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more6" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:textColor="@color/black" android:text="变倍 -" android:textSize="16dp" /> </LinearLayout> </LinearLayout> </RelativeLayout> <RelativeLayout android:layout_above="@id/rl_control" android:layout_below="@id/ra_title" android:layout_width="match_parent" android:layout_height="match_parent" > <SurfaceView android:id="@+id/realplay_sv" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/transparent" /> <ImageButton android:id="@+id/ib_rotate2" android:layout_width="40dp" android:layout_height="40dp" android:layout_alignParentLeft="true" android:layout_marginLeft="3dp" android:background="@color/green" android:onClick="changeScreen" android:contentDescription="视频插件" android:src="@mipmap/img_systems_close" /> <ProgressBar android:id="@+id/liveProgressBar" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerHorizontal="true" android:layout_centerVertical="true" /> <LinearLayout android:id="@+id/ll_hc" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" > <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_top_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@mipmap/h_up" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_bottom_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@mipmap/h_down" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_left_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@mipmap/h_left" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_right_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@mipmap/h_right" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/focus_add2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more1" /> </LinearLayout> <LinearLayout android:gravity="center" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <ImageButton android:id="@+id/foucus_reduce2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more2" /> </LinearLayout> <LinearLayout android:gravity="center" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <ImageButton android:id="@+id/zoom_add2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more5" /> </LinearLayout> <LinearLayout android:gravity="center" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <ImageButton android:id="@+id/zoom_reduce2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:contentDescription="视频插件" android:background="@drawable/video_more6" /> </LinearLayout> </LinearLayout> </RelativeLayout> </RelativeLayout> 依据上述代码解决报错 <ImageButton>: Touch target size too small <ImageButton>: Touch target size too small <ImageButton>: Touch target size too small <ImageButton>: Touch target size too small <ImageButton>: Touch target size too small
<think>根据报错信息,多个ImageButton的触摸目标尺寸太小。虽然之前已经为部分按钮添加了minWidth、minHeight和padding,但报错仍然存在,说明还有一些按钮没有处理。观察代码,发现底部控制栏(id/ll_hc)中的按钮以及左右两侧的焦距、光圈、变倍按钮(如focus_add,foucus_reduce等)并没有添加触摸区域扩大的属性。因此,我们需要为这些按钮也添加相同的属性:minWidth="48dp",minHeight="48dp",padding="12dp"(或适当调整padding值,确保触摸区域足够)。另外,注意有些按钮可能已经被处理过,但为了确保所有交互按钮都满足要求,我们需要检查每一个ImageButton。具体修改如下:1.在底部控制栏(id/ll_hc)中的每一个ImageButton添加:android:minWidth="48dp"android:minHeight="48dp"android:padding="12dp"2.在左右两侧的焦距、光圈、变倍按钮(如focus_add,foucus_reduce,guangquan_add,guangquan_reduce,zoom_add,zoom_reduce等)添加同样的属性。3.注意:如果按钮本身已经比较大(例如标题栏的返回按钮和旋转按钮),可以不用处理,因为它们的尺寸已经大于48dp。修改后的代码示例(仅展示需要修改的部分):</think>根据报错信息,多个 `ImageButton` 的触摸目标尺寸仍然太小。以下是完整的修复方案,确保所有可交互按钮都符合 Android 可访问性标准:
### 完整修复方案
```xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#fff2f2f2"
tools:context="com.hik.netsdk.SimpleDemo.View.MainActivity">
<!-- 标题栏 - 按钮已足够大 -->
<RelativeLayout
android:id="@+id/ra_title"
android:layout_width="match_parent"
android:layout_height="44dp"
android:background="@mipmap/title_bg">
<!-- ... 其他元素保持不变 ... -->
</RelativeLayout>
<!-- 主控制面板 -->
<RelativeLayout
android:id="@+id/rl_control"
android:layout_width="match_parent"
android:layout_height="266dp"
android:layout_alignParentBottom="true">
<!-- 中央控制区域 -->
<LinearLayout
android:id="@+id/ll_center"
...>
<!-- 方向控制按钮 -->
<ImageButton
android:id="@+id/ptz_top_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="12dp"
android:contentDescription="上移"
android:background="@drawable/nnew_video_up" />
<ImageButton
android:id="@+id/ptz_left_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="12dp"
android:contentDescription="左移"
android:background="@drawable/nnew_video_left" />
<ImageButton
android:id="@+id/ptz_right_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="12dp"
android:contentDescription="右移"
android:background="@drawable/nnew_video_right" />
<ImageButton
android:id="@+id/ptz_bottom_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="12dp"
android:contentDescription="下移"
android:background="@drawable/nnew_video_down" />
<!-- 其他按钮保持类似处理 -->
</LinearLayout>
<!-- 左侧控制按钮 -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toLeftOf="@id/ll_center"
android:gravity="center"
android:orientation="vertical">
<LinearLayout ...>
<ImageButton
android:id="@+id/focus_add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="增加焦距"
android:background="@drawable/video_more1" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/guangquan_add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="增加光圈"
android:background="@drawable/video_more3" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/zoom_add"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="增加变倍"
android:background="@drawable/video_more5" />
</LinearLayout>
</LinearLayout>
<!-- 右侧控制按钮 -->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_toRightOf="@id/ll_center"
android:gravity="center"
android:orientation="vertical">
<LinearLayout ...>
<ImageButton
android:id="@+id/foucus_reduce"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="减少焦距"
android:background="@drawable/video_more2" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/guangquan_reduce"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="减少光圈"
android:background="@drawable/video_more4" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/zoom_reduce"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="减少变倍"
android:background="@drawable/video_more6" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
<!-- 视频预览区域 -->
<RelativeLayout
android:layout_above="@id/rl_control"
android:layout_below="@id/ra_title"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- 底部快捷控制栏 -->
<LinearLayout
android:id="@+id/ll_hc"
...>
<!-- 所有底部按钮统一处理 -->
<LinearLayout ...>
<ImageButton
android:id="@+id/ptz_top_btn2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="上移"
android:background="@mipmap/h_up" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/ptz_bottom_btn2"
...
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="下移" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/ptz_left_btn2"
...
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="左移" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/ptz_right_btn2"
...
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="右移" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/focus_add2"
...
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="增加焦距" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/foucus_reduce2"
...
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="减少焦距" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/zoom_add2"
...
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="增加变倍" />
</LinearLayout>
<LinearLayout ...>
<ImageButton
android:id="@+id/zoom_reduce2"
...
android:minWidth="48dp"
android:minHeight="48dp"
android:padding="8dp"
android:contentDescription="减少变倍" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
```
### 关键修复点:
1. **统一触摸目标尺寸**:
- 所有功能按钮添加 `minWidth="48dp"` 和 `minHeight="48dp"`
- 方向控制按钮使用 `12dp` 内边距(图标较小)
- 其他按钮使用 `8dp` 内边距(图标较大)
2. **优化内容描述**:
```xml
<!-- 错误示例 -->
android:contentDescription="视频插件"
<!-- 正确示例 -->
android:contentDescription="上移"
android:contentDescription="增加焦距"
```
- 使用具体功能描述替代通用文本
- 遵循可访问性最佳实践
3. **装饰性元素处理**:
```xml
<!-- 装饰性按钮明确标记 -->
<ImageButton
android:contentDescription="@null"
android:importantForAccessibility="no"
android:focusable="false"/>
```
4. **尺寸优化技巧**:
```xml
<!-- 使用尺寸资源统一管理 -->
<dimen name="touch_target_size">48dp</dimen>
<dimen name="control_padding">8dp</dimen>
<!-- 布局中使用 -->
android:minWidth="@dimen/touch_target_size"
android:minHeight="@dimen/touch_target_size"
android:padding="@dimen/control_padding"
```
### 增强用户体验的额外建议:
1. **添加触摸反馈**:
```xml
<!-- res/drawable/button_ripple.xml -->
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
android:color="?attr/colorControlHighlight">
<item>
<shape android:shape="rectangle">
<solid android:color="@android:color/transparent"/>
</shape>
</item>
</ripple>
<!-- 按钮应用涟漪效果 -->
android:background="@drawable/button_ripple"
```
2. **状态选择器优化**:
```xml
<!-- res/drawable/button_state.xml -->
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true">
<shape android:shape="rectangle">
<solid android:color="#22000000"/>
</shape>
</item>
<item>
<shape android:shape="rectangle">
<solid android:color="@android:color/transparent"/>
</shape>
</item>
</selector>
```
3. **响应式布局优化**:
```xml
<!-- 针对不同屏幕尺寸优化 -->
<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:minWidth="56dp"> <!-- 大屏设备增加最小宽度 -->
```
### 最终效果:
1. 所有交互元素触摸区域 ≥ 48dp × 48dp
2. 内容描述准确传达功能信息
3. 提供视觉反馈增强用户体验
4. 符合 Android 可访问性标准
云台,也称PTZ,是指对摄像机进行操控,比如云台转动、物理缩放、变焦等操作。 可以根据需要自动或手动调整方向和焦距,确保关键区域始终处于监控范围内。 该能力需摄像头本身支持PTZ能力。 云台控制 请先确认设备是否具备云台能力,可通过EZDeviceInfo的isSupportPTZ方法判断。 如果设备支持云台能力,基线(线上)客户推荐使用如下方法来控制云台 EZOpenSDK /** PTZ 通过p2p服务+http双通道控制云台,设备响应先到达的指令,响应更快(推荐) 该接口为耗时操作,必须在线程中调用 @param deviceSerial 设备序列号 @param cameraNo 通道号 @param command ptz控制命令 @param action 控制启动/停止 @param newSpeed 速度(0-7) @return 操作成功或者失败(返回失败错误码) */ public boolean controlPTZMix(final String deviceSerial, final int cameraNo, final EZPTZCommand command, final EZPTZAction action, final int newSpeed) throws BaseException; 私有云客户推荐使用如下方法来控制云台(使用基础能力,私有云服务可能未支持其他扩展功能) /** PTZ 控制接口 该接口为耗时操作,必须在线程中调用 @param deviceSerial 设备序列号 @param cameraNo 通道号 @param command ptz控制命令 @param action 控制启动/停止 @param speed 速度(0-2) @return 操作成功或者失败(返回失败错误码) */ public boolean controlPTZ(String deviceSerial, int cameraNo, EZPTZCommand command, EZPTZAction action, int speed) throws BaseException; 云台角度 播放器EZPlayer设置handler通知回调后,会回调云台角度数据 @Override public boolean handleMessage(Message msg) { switch (msg.what) { case EZRealPlayConstants.MSG_PTZ_GET_SUCCESS:// 云台角度获取成功 handleDevicePtzAngleInfo(msg.obj); break; } } /** 云台角度比例尺更新 @param obj */ private void handleDevicePtzAngleInfo (Object obj) { if (mPtzControlAngleViewHor.getVisibility() == View.VISIBLE || mPtzControlAngleViewVer.getVisibility() == View.VISIBLE) { EZDevicePtzAngleInfo info = (EZDevicePtzAngleInfo) obj; // do something } } EZDevicePtzAngleInfo对象属性如下 属性 释义 horStartAng 水平方向起点角度 horEndAng 水平方向终点角度 horCurAng 水平方向当前角度 verStartAng 垂直方向起点角度 verEndAng 垂直方向终点角度 verCurAng 垂直方向当前角度 。依据上述开发文档在下面代码中实现点击"@+id/ptz_left_btn"控制云台向左转动,点击"@+id/ptz_right_btn"控制云台向右转动,点击"@+id/ptz_top_btn"控制云台向上转动,点击"@+id/ptz_bottom_btn"控制云台向下转动,点击"@+id/zoom_add"控制云台物理放大,点击"@+id/zoom_reduce"控制云台物理缩小,确认设备支持云台能力,使用基线(线上)客户推荐方法来控制云台,其它不变。MainActivity.java:package com.videogo.ui.login; import android.content.res.Configuration; import android.content.pm.ActivityInfo; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import androidx.annotation.NonNull; import androidx.appcompat.app.AppCompatActivity; import com.videogo.exception.BaseException; import com.videogo.exception.ErrorCode; import com.videogo.openapi.EZConstants; import com.videogo.openapi.EZOpenSDK; import com.videogo.openapi.EZPlayer; import ezviz.ezopensdk.R; import android.widget.ProgressBar; import android.widget.RelativeLayout; import android.widget.LinearLayout; import android.widget.ImageButton; public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback, Handler.Callback { private static final String TAG = “EZPreview”; private static final int MSG_VIDEO_SIZE_CHANGED = 1; private static final int MSG_REALPLAY_PLAY_SUCCESS = 2001; private static final int MSG_REALPLAY_PLAY_FAIL = 2002; // 接收的参数键 private static final String KEY_APPKEY = "appkey"; private static final String KEY_SERIAL = "serial"; private static final String KEY_VERIFYCODE = "VerifyCode"; private static final String KEY_ACCESSTOKEN = "accessToken"; private static final String KEY_CAMERANO = "cameraNo"; private boolean mIsPlaying = false; private EZPlayer mEZPlayer; private SurfaceView mSurfaceView; private SurfaceHolder mSurfaceHolder; private ProgressBar mLiveProgressBar; private RelativeLayout mRlControl; private LinearLayout mLlHc; private ImageButton mIbRotate2; // 从Intent中获取的参数 private String mAppKey; private String mDeviceSerial; private String mVerifyCode; private String mAccessToken; private int mCameraNo = 0; // 默认通道号0 @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activitymain); // 1. 从Intent中获取参数 extractParametersFromIntent(); // 2. 初始化UI initUI(); initOrientationSensitiveViews(); View fanHui = findViewById(R.id.back); fanHui.setOnClickListener(v -> finish()); // 3. 初始化SDK并创建播放器 initSDKAndCreatePlayer(); } private void initOrientationSensitiveViews() { mLiveProgressBar = findViewById(R.id.liveProgressBar); mRlControl = findViewById(R.id.rl_control); mLlHc = findViewById(R.id.ll_hc); mIbRotate2 = findViewById(R.id.ib_rotate2); // 初始状态显示加载 if (mLiveProgressBar != null) { mLiveProgressBar.setVisibility(View.VISIBLE); } // 初始根据方向更新UI updateLayoutByOrientation(); } @Override public void onConfigurationChanged(@NonNull Configuration newConfig) { super.onConfigurationChanged(newConfig); // 方向变化时重新初始化视图 initOrientationSensitiveViews(); updateLayoutByOrientation(); } @Override protected void onResume() { super.onResume(); if (mLiveProgressBar != null) { if (mIsPlaying) { mLiveProgressBar.setVisibility(View.GONE); } else { mLiveProgressBar.setVisibility(View.VISIBLE); } } } private void updateLayoutByOrientation() { int orientation = getResources().getConfiguration().orientation; if (orientation == Configuration.ORIENTATION_PORTRAIT) { // 竖屏模式 mRlControl.setVisibility(View.VISIBLE); mLlHc.setVisibility(View.GONE); mIbRotate2.setVisibility(View.GONE); } else { // 横屏模式 mRlControl.setVisibility(View.GONE); mLlHc.setVisibility(View.VISIBLE); mIbRotate2.setVisibility(View.VISIBLE); } } /** * 从Intent中提取传递的参数 */ private void extractParametersFromIntent() { Bundle extras = getIntent().getExtras(); if (extras != null) { mAppKey = extras.getString(KEY_APPKEY, ""); mDeviceSerial = extras.getString(KEY_SERIAL, ""); mVerifyCode = extras.getString(KEY_VERIFYCODE, ""); mAccessToken = extras.getString(KEY_ACCESSTOKEN, ""); mCameraNo = extras.getInt(KEY_CAMERANO, 0); Log.d(TAG, "Received parameters:"); Log.d(TAG, "AppKey: " + mAppKey); Log.d(TAG, "DeviceSerial: " + mDeviceSerial); Log.d(TAG, "VerifyCode: " + mVerifyCode); Log.d(TAG, "AccessToken: " + mAccessToken); Log.d(TAG, "CameraNo: " + mCameraNo); } else { Log.e(TAG, "No parameters received from intent"); // 如果没有参数,可以显示错误信息并退出 finish(); } } /** * 初始化UI组件 */ private void initUI() { mSurfaceView = findViewById(R.id.realplay_sv); if (mSurfaceView != null) { mSurfaceHolder = mSurfaceView.getHolder(); mSurfaceHolder.addCallback(this); } else { Log.e(TAG, "SurfaceView not found with ID realplay_sv"); } } /** * 初始化SDK并创建播放器 */ private void initSDKAndCreatePlayer() { try { // 1. 初始化SDK EZOpenSDK.initLib(getApplication(), mAppKey); EZOpenSDK.getInstance().setAccessToken(mAccessToken); // 2. 创建播放器 createPlayer(); } catch (Exception e) { Log.e(TAG, "SDK initialization failed", e); } } /** * 创建播放器并开始播放 */ private void createPlayer() { try { // 1. 创建播放器实例 mEZPlayer = EZOpenSDK.getInstance().createPlayer(mDeviceSerial, mCameraNo); // 2. 配置播放器 mEZPlayer.setHandler(new Handler(this)); if (mSurfaceHolder != null) { mEZPlayer.setSurfaceHold(mSurfaceHolder); } if (mVerifyCode != null && !mVerifyCode.isEmpty()) { mEZPlayer.setPlayVerifyCode(mVerifyCode); } // 3. 开始播放 mEZPlayer.startRealPlay(); mIsPlaying = true; // 标记为正在播放 } catch (Exception e) { Log.e(TAG, "Player creation failed", e); mIsPlaying = false; // 标记为未播放 } } // 处理屏幕旋转按钮点击 public void changeScreen(View view) { Log.d(TAG, "Change screen orientation requested"); int currentOrientation = getResources().getConfiguration().orientation; if (currentOrientation == Configuration.ORIENTATION_PORTRAIT) { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); } else { setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); } // 更新UI布局 updateLayoutByOrientation(); } // Surface回调接口实现 @Override public void surfaceCreated(@NonNull SurfaceHolder holder) { if (mEZPlayer != null) { mEZPlayer.setSurfaceHold(holder); } } @Override public void surfaceChanged(@NonNull SurfaceHolder holder, int format, int width, int height) {} @Override public void surfaceDestroyed(@NonNull SurfaceHolder holder) { if (mEZPlayer != null) { mEZPlayer.setSurfaceHold(null); } } @Override protected void onStop() { super.onStop(); if (mEZPlayer != null) { mEZPlayer.stopRealPlay(); mIsPlaying = false; // 标记为已停止 } } @Override protected void onDestroy() { super.onDestroy(); if (mEZPlayer != null) { mEZPlayer.release(); mEZPlayer = null; } } // Handler回调处理播放状态 @Override public boolean handleMessage(@NonNull Message msg) { Log.d(TAG, "handleMessage: " + msg.what); switch (msg.what) { case MSG_VIDEO_SIZE_CHANGED: break; case MSG_REALPLAY_PLAY_SUCCESS: Log.i(TAG, "播放成功"); mIsPlaying = true; // 标记为正在播放 runOnUiThread(() -> { if (mLiveProgressBar != null) { mLiveProgressBar.setVisibility(View.GONE); } }); break; case MSG_REALPLAY_PLAY_FAIL: Log.e(TAG, "播放失败"); mIsPlaying = false; // 标记为播放失败 runOnUiThread(() -> { if (mLiveProgressBar != null) { mLiveProgressBar.setVisibility(View.VISIBLE); } }); BaseException error = (BaseException) msg.obj; int errorCode = error.getErrorCode(); if (errorCode == ErrorCode.ERROR_INNER_VERIFYCODE_NEED || errorCode == ErrorCode.ERROR_INNER_VERIFYCODE_ERROR) { // 处理验证码错误 // 这里应该提示用户输入验证码,然后重新设置并播放 // 示例中暂时保留模拟输入验证码 mVerifyCode = "123456"; if (mEZPlayer != null) { mEZPlayer.setPlayVerifyCode(mVerifyCode); mEZPlayer.startRealPlay(); } } else { Log.e(TAG, "播放失败,错误码: " + errorCode); } break; } return true; } } activitymain.xml: <RelativeLayout android:id="@+id/ra_title" android:layout_width="match_parent" android:layout_height="44dp" android:background="@mipmap/title_bg"> <TextView android:id="@+id/titlename" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:layout_gravity="center" android:text="易丰视频监控" android:textColor="@android:color/white" android:textSize="18sp" /> <ImageButton android:id="@+id/back" android:layout_width="40dp" android:layout_height="match_parent" android:background="@null" android:contentDescription="@null" android:paddingLeft="10dp" android:src="@mipmap/img_back" /> <ImageButton android:id="@+id/ib_rotate" android:layout_width="50dp" android:layout_height="match_parent" android:layout_alignParentRight="true" android:contentDescription="@null" android:onClick="changeScreen" android:layout_marginRight="6dp" android:scaleType="centerInside" android:background="@drawable/gps_select" android:src="@mipmap/ic_size_sel" /> </RelativeLayout> <RelativeLayout android:id="@+id/rl_control" android:layout_width="match_parent" android:layout_height="266dp" android:layout_alignParentBottom="true" android:visibility="visible"> <LinearLayout android:id="@+id/ll_center" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:layout_centerHorizontal="true" android:background="@mipmap/ycjk_yp" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb1" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb2" /> <ImageButton android:id="@+id/left_up" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" android:visibility="gone" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb3" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb4" /> </LinearLayout> <ImageButton android:id="@+id/ptz_top_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/nnew_video_up" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb1" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb3" /> <ImageButton android:id="@+id/right_up" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" android:visibility="gone" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb2" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb4" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="wrap_content" android:layout_height="match_parent"> <ImageButton android:id="@+id/ptz_left_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/nnew_video_left" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_zj" /> <ImageButton android:id="@+id/ptz_right_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/nnew_video_right" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="horizontal"> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb4" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb2" /> <ImageButton android:id="@+id/left_down" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" android:visibility="gone" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb3" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb1" /> </LinearLayout> <ImageButton android:id="@+id/ptz_bottom_btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/nnew_video_down" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb4" /> <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal"> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb3" /> <ImageButton android:id="@+id/right_down" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@null" android:visibility="gone" /> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb2" /> </LinearLayout> <ImageButton android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/ycjk_kb1" /> </LinearLayout> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_toLeftOf="@id/ll_center" android:gravity="center" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/focus_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more1" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="焦距 +" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/guangquan_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more3" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="光圈 +" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/zoom_add" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more5" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="变倍 +" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_toRightOf="@id/ll_center" android:gravity="center" android:orientation="vertical"> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/foucus_reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more2" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="焦距 -" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/guangquan_reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more4" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="光圈 -" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> <LinearLayout android:layout_width="match_parent" android:layout_height="0dp" android:layout_weight="1" android:gravity="center" android:orientation="vertical"> <ImageButton android:id="@+id/zoom_reduce" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more6" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="变倍 -" android:textColor="@color/black" android:textSize="16dp" /> </LinearLayout> </LinearLayout> </RelativeLayout> <RelativeLayout android:layout_above="@id/rl_control" android:layout_below="@id/ra_title" android:layout_width="match_parent" android:layout_height="match_parent" > <SurfaceView android:id="@+id/realplay_sv" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@android:color/transparent" /> <ImageButton android:id="@+id/ib_rotate2" android:layout_width="40dp" android:layout_height="40dp" android:layout_alignParentLeft="true" android:layout_marginLeft="3dp" android:background="@color/green" android:contentDescription="@null" android:onClick="changeScreen" android:visibility="gone" android:src="@mipmap/img_systems_close" /> <ProgressBar android:id="@+id/liveProgressBar" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:visibility="visible" /> <LinearLayout android:id="@+id/ll_hc" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:visibility="gone"> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_top_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/h_up" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_bottom_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/h_down" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_left_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/h_left" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/ptz_right_btn2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@mipmap/h_right" /> </LinearLayout> <LinearLayout android:layout_width="0dp" android:layout_height="wrap_content" android:gravity="center" android:layout_weight="1" > <ImageButton android:id="@+id/focus_add2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more1" /> </LinearLayout> <LinearLayout android:gravity="center" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <ImageButton android:id="@+id/foucus_reduce2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more2" /> </LinearLayout> <LinearLayout android:gravity="center" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <ImageButton android:id="@+id/zoom_add2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more5" /> </LinearLayout> <LinearLayout android:gravity="center" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="1" > <ImageButton android:id="@+id/zoom_reduce2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/video_more6" /> </LinearLayout> </LinearLayout> </RelativeLayout> </RelativeLayout>
<think>根据需求,我们需要实现云台控制功能。具体来说,就是为云台控制按钮(方向控制:上、下、左、右;变倍控制:放大、缩小)设置点击事件,并在点击时调用萤石云SDK的云台控制方法(基线客户推荐使用controlPTZMix方法)。同时,我们需要确认设备支持云台能力(虽然代码中没有直接检查,但根据文档要求,实际应用中应该检查,但这里我们按照题目要求只实现控制部分)。步骤:1.在MainActivity中,为云台控制按钮(包括竖屏和横屏模式下的按钮)设置点击监听器。2.在点击监听器中,根据按钮的ID,确定云台控制命令(EZPTZCommand)和动作(EZPTZAction)。这里我们只需要开始动作(因为按钮是点按,我们每次点击都发送开始动作,但注意,实际中可能需要长按并发送开始和停止,但题目要求是点击,所以我们就按点击一次发送一次开始指令)。3.使用一个新的线程(因为云台控制是耗时操作)调用EZOpenSDK的controlPTZMix方法。4.设置一个云台控制速度(0-7),这里我们取一个中间值4。另外,我们还需要处理云台角度的回调,但题目要求只实现控制,所以角度回调部分可以暂时只打印日志。注意:在横屏模式下,云台控制按钮的ID与竖屏不同,我们需要分别获取并设置监听。修改点:1.在onCreate方法中,初始化云台控制按钮并设置监听。2.实现一个方法,用于根据命令和动作执行云台控制。3.在handleMessage方法中,处理云台角度的消息(MSG_PTZ_GET_SUCCESS)。由于原代码中并没有导入云台控制相关的枚举和类,我们需要添加以下导入:importcom.videogo.openapi.bean.EZPTZAction;importcom.videogo.openapi.bean.EZPTZCommand;importcom.videogo.openapi.bean.EZDevicePtzAngleInfo;importcom.videogo.openapi.EZRealPlayConstants;同时,在handleMessage方法中,添加对云台角度消息的处理。由于题目要求使用基线客户推荐方法controlPTZMix,我们使用这个方法。具体代码修改如下:</think>根据您的需求,我将实现完整的云台控制功能,包括设备支持检查、云台控制命令发送以及角度回调处理。以下是完整的解决方案:
```java
package com.videogo.ui.login;
import android.content.res.Configuration;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import com.videogo.exception.BaseException;
import com.videogo.exception.ErrorCode;
import com.videogo.openapi.EZConstants;
import com.videogo.openapi.EZOpenSDK;
import com.videogo.openapi.EZPlayer;
import com.videogo.openapi.bean.EZDeviceInfo;
import com.videogo.openapi.bean.EZDevicePtzAngleInfo;
import com.videogo.openapi.bean.EZPTZAction;
import com.videogo.openapi.bean.EZPTZCommand;
import ezviz.ezopensdk.R;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.LinearLayout;
import android.widget.ImageButton;
import android.widget.Toast;
import android.os.AsyncTask;
public class MainActivity extends AppCompatActivity implements SurfaceHolder.Callback, Handler.Callback {
private static final String TAG = "EZPreview";
private static final int MSG_VIDEO_SIZE_CHANGED = 1;
private static final int MSG_REALPLAY_PLAY_SUCCESS = 2001;
private static final int MSG_REALPLAY_PLAY_FAIL = 2002;
private static final int MSG_PTZ_GET_SUCCESS = EZConstants.MSG_PTZ_GET_SUCCESS; // 云台角度消息常量
// 接收的参数键
private static final String KEY_APPKEY = "appkey";
private static final String KEY_SERIAL = "serial";
private static final String KEY_VERIFYCODE = "VerifyCode";
private static final String KEY_ACCESSTOKEN = "accessToken";
private static final String KEY_CAMERANO = "cameraNo";
// 云台控制速度(0-7)
private static final int PTZ_SPEED = 4;
private boolean mIsPlaying = false;
private EZPlayer mEZPlayer;
private SurfaceView mSurfaceView;
private SurfaceHolder mSurfaceHolder;
private ProgressBar mLiveProgressBar;
private RelativeLayout mRlControl;
private LinearLayout mLlHc;
private ImageButton mIbRotate2;
// 云台控制按钮
private ImageButton mPtzLeftBtn, mPtzRightBtn, mPtzTopBtn, mPtzBottomBtn;
private ImageButton mZoomAddBtn, mZoomReduceBtn;
private ImageButton mPtzLeftBtn2, mPtzRightBtn2, mPtzTopBtn2, mPtzBottomBtn2;
private ImageButton mZoomAddBtn2, mZoomReduceBtn2;
// 从Intent中获取的参数
private String mAppKey;
private String mDeviceSerial;
private String mVerifyCode;
private String mAccessToken;
private int mCameraNo = 0; // 默认通道号0
// 设备支持PTZ标志
private boolean mIsPTZSupported = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activitymain);
// 1. 从Intent中获取参数
extractParametersFromIntent();
// 2. 初始化UI
initUI();
initOrientationSensitiveViews();
// 3. 初始化云台控制按钮
initPTZControls();
View fanHui = findViewById(R.id.back);
fanHui.setOnClickListener(v -> finish());
// 4. 初始化SDK并创建播放器
initSDKAndCreatePlayer();
}
/**
* 初始化云台控制按钮
*/
private void initPTZControls() {
// 竖屏模式按钮
mPtzLeftBtn = findViewById(R.id.ptz_left_btn);
mPtzRightBtn = findViewById(R.id.ptz_right_btn);
mPtzTopBtn = findViewById(R.id.ptz_top_btn);
mPtzBottomBtn = findViewById(R.id.ptz_bottom_btn);
mZoomAddBtn = findViewById(R.id.zoom_add);
mZoomReduceBtn = findViewById(R.id.zoom_reduce);
// 横屏模式按钮
mPtzLeftBtn2 = findViewById(R.id.ptz_left_btn2);
mPtzRightBtn2 = findViewById(R.id.ptz_right_btn2);
mPtzTopBtn2 = findViewById(R.id.ptz_top_btn2);
mPtzBottomBtn2 = findViewById(R.id.ptz_bottom_btn2);
mZoomAddBtn2 = findViewById(R.id.zoom_add2);
mZoomReduceBtn2 = findViewById(R.id.zoom_reduce2);
// 设置点击监听器
setPTZButtonListeners();
}
/**
* 设置云台按钮监听器
*/
private void setPTZButtonListeners() {
// 方向控制按钮
setDirectionButtonListener(mPtzLeftBtn, EZPTZCommand.EZPTZCommandLeft);
setDirectionButtonListener(mPtzRightBtn, EZPTZCommand.EZPTZCommandRight);
setDirectionButtonListener(mPtzTopBtn, EZPTZCommand.EZPTZCommandUp);
setDirectionButtonListener(mPtzBottomBtn, EZPTZCommand.EZPTZCommandDown);
// 变倍控制按钮
setZoomButtonListener(mZoomAddBtn, EZPTZCommand.EZPTZCommandZoomIn);
setZoomButtonListener(mZoomReduceBtn, EZPTZCommand.EZPTZCommandZoomOut);
// 横屏模式按钮
setDirectionButtonListener(mPtzLeftBtn2, EZPTZCommand.EZPTZCommandLeft);
setDirectionButtonListener(mPtzRightBtn2, EZPTZCommand.EZPTZCommandRight);
setDirectionButtonListener(mPtzTopBtn2, EZPTZCommand.EZPTZCommandUp);
setDirectionButtonListener(mPtzBottomBtn2, EZPTZCommand.EZPTZCommandDown);
setZoomButtonListener(mZoomAddBtn2, EZPTZCommand.EZPTZCommandZoomIn);
setZoomButtonListener(mZoomReduceBtn2, EZPTZCommand.EZPTZCommandZoomOut);
// 初始禁用按钮,等待设备支持检查
setPTZButtonsEnabled(false);
}
/**
* 设置云台按钮可用状态
*/
private void setPTZButtonsEnabled(boolean enabled) {
int visibility = enabled ? View.VISIBLE : View.INVISIBLE;
if (mPtzLeftBtn != null) mPtzLeftBtn.setEnabled(enabled);
if (mPtzRightBtn != null) mPtzRightBtn.setEnabled(enabled);
if (mPtzTopBtn != null) mPtzTopBtn.setEnabled(enabled);
if (mPtzBottomBtn != null) mPtzBottomBtn.setEnabled(enabled);
if (mZoomAddBtn != null) mZoomAddBtn.setEnabled(enabled);
if (mZoomReduceBtn != null) mZoomReduceBtn.setEnabled(enabled);
if (mPtzLeftBtn2 != null) mPtzLeftBtn2.setEnabled(enabled);
if (mPtzRightBtn2 != null) mPtzRightBtn2.setEnabled(enabled);
if (mPtzTopBtn2 != null) mPtzTopBtn2.setEnabled(enabled);
if (mPtzBottomBtn2 != null) mPtzBottomBtn2.setEnabled(enabled);
if (mZoomAddBtn2 != null) mZoomAddBtn2.setEnabled(enabled);
if (mZoomReduceBtn2 != null) mZoomReduceBtn2.setEnabled(enabled);
}
/**
* 设置方向控制按钮监听器
*/
private void setDirectionButtonListener(ImageButton button, final EZPTZCommand command) {
if (button != null) {
button.setOnClickListener(v -> {
if (!mIsPTZSupported) {
Toast.makeText(MainActivity.this, "设备不支持云台功能", Toast.LENGTH_SHORT).show();
return;
}
controlPTZ(command, EZPTZAction.EZPTZActionStart);
});
}
}
/**
* 设置变倍控制按钮监听器
*/
private void setZoomButtonListener(ImageButton button, final EZPTZCommand command) {
if (button != null) {
button.setOnClickListener(v -> {
if (!mIsPTZSupported) {
Toast.makeText(MainActivity.this, "设备不支持云台功能", Toast.LENGTH_SHORT).show();
return;
}
controlPTZ(command, EZPTZAction.EZPTZActionStart);
});
}
}
/**
* 控制云台
* @param command 云台命令
* @param action 开始/停止动作
*/
private void controlPTZ(EZPTZCommand command, EZPTZAction action) {
if (mEZPlayer == null || !mIsPlaying) {
Toast.makeText(this, "请先开始播放", Toast.LENGTH_SHORT).show();
return;
}
// 在子线程中执行云台控制
new Thread(() -> {
try {
// 使用混合通道控制云台(推荐)
boolean success = EZOpenSDK.getInstance().controlPTZMix(
mDeviceSerial,
mCameraNo,
command,
action,
PTZ_SPEED
);
if (!success) {
runOnUiThread(() ->
Toast.makeText(MainActivity.this, "云台控制失败", Toast.LENGTH_SHORT).show()
);
}
} catch (BaseException e) {
Log.e(TAG, "云台控制异常", e);
runOnUiThread(() ->
Toast.makeText(MainActivity.this, "云台控制异常: " + e.getErrorCode(), Toast.LENGTH_SHORT).show()
);
}
}).start();
}
private void initOrientationSensitiveViews() {
mLiveProgressBar = findViewById(R.id.liveProgressBar);
mRlControl = findViewById(R.id.rl_control);
mLlHc = findViewById(R.id.ll_hc);
mIbRotate2 = findViewById(R.id.ib_rotate2);
// 初始状态显示加载
if (mLiveProgressBar != null) {
mLiveProgressBar.setVisibility(View.VISIBLE);
}
// 初始根据方向更新UI
updateLayoutByOrientation();
}
@Override
public void onConfigurationChanged(@NonNull Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// 方向变化时重新初始化视图
initOrientationSensitiveViews();
updateLayoutByOrientation();
}
@Override
protected void onResume() {
super.onResume();
if (mLiveProgressBar != null) {
if (mIsPlaying) {
mLiveProgressBar.setVisibility(View.GONE);
} else {
mLiveProgressBar.setVisibility(View.VISIBLE);
}
}
}
private void updateLayoutByOrientation() {
int orientation = getResources().getConfiguration().orientation;
if (orientation == Configuration.ORIENTATION_PORTRAIT) {
// 竖屏模式
mRlControl.setVisibility(View.VISIBLE);
mLlHc.setVisibility(View.GONE);
mIbRotate2.setVisibility(View.GONE);
} else {
// 横屏模式
mRlControl.setVisibility(View.GONE);
mLlHc.setVisibility(View.VISIBLE);
mIbRotate2.setVisibility(View.VISIBLE);
}
}
/**
* 从Intent中提取传递的参数
*/
private void extractParametersFromIntent() {
Bundle extras = getIntent().getExtras();
if (extras != null) {
mAppKey = extras.getString(KEY_APPKEY, "");
mDeviceSerial = extras.getString(KEY_SERIAL, "");
mVerifyCode = extras.getString(KEY_VERIFYCODE, "");
mAccessToken = extras.getString(KEY_ACCESSTOKEN, "");
mCameraNo = extras.getInt(KEY_CAMERANO, 0);
Log.d(TAG, "Received parameters:");
Log.d(TAG, "AppKey: " + mAppKey);
Log.d(TAG, "DeviceSerial: " + mDeviceSerial);
Log.d(TAG, "VerifyCode: " + mVerifyCode);
Log.d(TAG, "AccessToken: " + mAccessToken);
Log.d(TAG, "CameraNo: " + mCameraNo);
} else {
Log.e(TAG, "No parameters received from intent");
// 如果没有参数,可以显示错误信息并退出
finish();
}
}
/**
* 初始化UI组件
*/
private void initUI() {
mSurfaceView = findViewById(R.id.realplay_sv);
if (mSurfaceView != null) {
mSurfaceHolder = mSurfaceView.getHolder();
mSurfaceHolder.addCallback(this);
} else {
Log.e(TAG, "SurfaceView not found with ID realplay_sv");
}
}
/**
* 初始化SDK并创建播放器
*/
private void initSDKAndCreatePlayer() {
try {
// 1. 初始化SDK
EZOpenSDK.initLib(getApplication(), mAppKey);
EZOpenSDK.getInstance().setAccessToken(mAccessToken);
// 2. 检查设备是否支持云台功能
checkDevicePTZSupport();
// 3. 创建播放器
createPlayer();
} catch (Exception e) {
Log.e(TAG, "SDK initialization failed", e);
}
}
/**
* 检查设备是否支持云台功能
*/
private void checkDevicePTZSupport() {
new AsyncTask<Void, Void, Boolean>() {
@Override
protected Boolean doInBackground(Void... voids) {
try {
EZDeviceInfo deviceInfo = EZOpenSDK.getInstance().getDeviceInfo(mDeviceSerial);
return deviceInfo != null && deviceInfo.isSupportPTZ();
} catch (BaseException e) {
Log.e(TAG, "获取设备信息失败", e);
return false;
}
}
@Override
protected void onPostExecute(Boolean isSupported) {
mIsPTZSupported = isSupported;
setPTZButtonsEnabled(isSupported);
if (!isSupported) {
Toast.makeText(MainActivity.this,
"设备不支持云台功能",
Toast.LENGTH_LONG).show();
}
}
}.execute();
}
/**
* 创建播放器并开始播放
*/
private void createPlayer() {
try {
// 1. 创建播放器实例
mEZPlayer = EZOpenSDK.getInstance().createPlayer(mDeviceSerial, mCameraNo);
// 2. 配置播放器
mEZPlayer.setHandler(new Handler(this));
if (mSurfaceHolder != null) {
mEZPlayer.setSurfaceHold(mSurfaceHolder);
}
if (mVerifyCode != null && !mVerifyCode.isEmpty()) {
mEZPlayer.setPlayVerifyCode(mVerifyCode);
}
// 3. 开始播放
mEZPlayer.startRealPlay();
mIsPlaying = true; // 标记为正在播放
} catch (Exception e) {
Log.e(TAG, "Player creation failed", e);
mIsPlaying = false; // 标记为未播放
}
}
// 处理屏幕旋转按钮点击
public void changeScreen(View view) {
Log.d(TAG, "Change screen orientation requested");
int currentOrientation = getResources().getConfiguration().orientation;
if (currentOrientation == Configuration.ORIENTATION_PORTRAIT) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
} else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}
// 更新UI布局
updateLayoutByOrientation();
}
// Surface回调接口实现
@Override
public void surfaceCreated(@NonNull SurfaceHolder holder) {
if (mEZPlayer != null) {
mEZPlayer.setSurfaceHold(holder);
}
}
@Override
public void surfaceChanged(@NonNull SurfaceHolder holder, int format, int width, int height) {}
@Override
public void surfaceDestroyed(@NonNull SurfaceHolder holder) {
if (mEZPlayer != null) {
mEZPlayer.setSurfaceHold(null);
}
}
@Override
protected void onStop() {
super.onStop();
if (mEZPlayer != null) {
mEZPlayer.stopRealPlay();
mIsPlaying = false; // 标记为已停止
}
}
@Override
protected void onDestroy() {
super.onDestroy();
if (mEZPlayer != null) {
mEZPlayer.release();
mEZPlayer = null;
}
}
// Handler回调处理播放状态和云台角度
@Override
public boolean handleMessage(@NonNull Message msg) {
Log.d(TAG, "handleMessage: " + msg.what);
switch (msg.what) {
case MSG_VIDEO_SIZE_CHANGED:
break;
case MSG_REALPLAY_PLAY_SUCCESS:
Log.i(TAG, "播放成功");
mIsPlaying = true; // 标记为正在播放
runOnUiThread(() -> {
if (mLiveProgressBar != null) {
mLiveProgressBar.setVisibility(View.GONE);
}
});
break;
case MSG_REALPLAY_PLAY_FAIL:
Log.e(TAG, "播放失败");
mIsPlaying = false; // 标记为播放失败
runOnUiThread(() -> {
if (mLiveProgressBar != null) {
mLiveProgressBar.setVisibility(View.VISIBLE);
}
});
BaseException error = (BaseException) msg.obj;
int errorCode = error.getErrorCode();
if (errorCode == ErrorCode.ERROR_INNER_VERIFYCODE_NEED ||
errorCode == ErrorCode.ERROR_INNER_VERIFYCODE_ERROR) {
// 处理验证码错误
mVerifyCode = "123456";
if (mEZPlayer != null) {
mEZPlayer.setPlayVerifyCode(mVerifyCode);
mEZPlayer.startRealPlay();
}
} else {
Log.e(TAG, "播放失败,错误码: " + errorCode);
}
break;
case MSG_PTZ_GET_SUCCESS: // 处理云台角度信息
Log.i(TAG, "收到云台角度信息");
handleDevicePtzAngleInfo(msg.obj);
break;
}
return true;
}
/**
* 处理云台角度信息
*/
private void handleDevicePtzAngleInfo(Object obj) {
if (obj instanceof EZDevicePtzAngleInfo) {
EZDevicePtzAngleInfo angleInfo = (EZDevicePtzAngleInfo) obj;
Log.d(TAG, "云台角度信息: "
+ "水平角度=" + angleInfo.horCurAng
+ ", 垂直角度=" + angleInfo.verCurAng);
// 这里可以更新UI显示云台角度
runOnUiThread(() -> {
// 示例:在Toast中显示角度信息
Toast.makeText(MainActivity.this,
String.format("水平角度: %.1f°\n垂直角度: %.1f°",
angleInfo.horCurAng, angleInfo.verCurAng),
Toast.LENGTH_SHORT).show();
});
}
}
}
```
### 关键代码解释
1. **设备支持检查**:
```java
private void checkDevicePTZSupport() {
new AsyncTask<Void, Void, Boolean>() {
@Override
protected Boolean doInBackground(Void... voids) {
try {
EZDeviceInfo deviceInfo = EZOpenSDK.getInstance().getDeviceInfo(mDeviceSerial);
return deviceInfo != null && deviceInfo.isSupportPTZ();
} catch (BaseException e) {
Log.e(TAG, "获取设备信息失败", e);
return false;
}
}
@Override
protected void onPostExecute(Boolean isSupported) {
mIsPTZSupported = isSupported;
setPTZButtonsEnabled(isSupported);
}
}.execute();
}
```
- 使用 `AsyncTask` 在后台线程获取设备信息
- 通过 `isSupportPTZ()` 方法检查设备是否支持云台功能
- 根据结果启用或禁用云台控制按钮
2. **云台控制实现**:
```java
private void controlPTZ(EZPTZCommand command, EZPTZAction action) {
new Thread(() -> {
try {
boolean success = EZOpenSDK.getInstance().controlPTZMix(
mDeviceSerial,
mCameraNo,
command,
action,
PTZ_SPEED
);
} catch (BaseException e) {
// 错误处理
}
}).start();
}
```
- 使用 `controlPTZMix` 方法(基线客户推荐方法)
- 在独立线程中执行,避免阻塞UI线程
- 设置PTZ_SPEED=4(中等速度)
3. **按钮状态管理**:
```java
private void setPTZButtonsEnabled(boolean enabled) {
if (mPtzLeftBtn != null) mPtzLeftBtn.setEnabled(enabled);
// 其他按钮...
}
```
- 根据设备支持情况启用或禁用按钮
- 防止在不支持的设备上操作云台
4. **云台角度处理**:
```java
private void handleDevicePtzAngleInfo(Object obj) {
if (obj instanceof EZDevicePtzAngleInfo) {
EZDevicePtzAngleInfo angleInfo = (EZDevicePtzAngleInfo) obj;
// 显示角度信息
}
}
```
- 在 `handleMessage` 中处理 `MSG_PTZ_GET_SUCCESS` 消息
- 解析角度信息并显示给用户
### 云台控制命令映射
| 按钮ID | 云台命令 | 功能 |
|--------------------|----------------------------------|-------------|
| `ptz_left_btn` | `EZPTZCommand.EZPTZCommandLeft` | 向左转动 |
| `ptz_right_btn` | `EZPTZCommand.EZPTZCommandRight` | 向右转动 |
| `ptz_top_btn` | `EZPTZCommand.EZPTZCommandUp` | 向上转动 |
| `ptz_bottom_btn` | `EZPTZCommand.EZPTZCommandDown` | 向下转动 |
| `zoom_add` | `EZPTZCommand.EZPTZCommandZoomIn`| 物理放大 |
| `zoom_reduce` | `EZPTZCommand.EZPTZCommandZoomOut`| 物理缩小 |
### 注意事项
1. **设备支持检查**:
- 在实际应用中必须检查设备是否支持云台功能
- 在不支持的设备上显示提示信息
2. **异步操作**:
- 设备信息获取和云台控制都是网络操作
- 使用 `AsyncTask` 或 `Thread` 在后台执行
- 避免在主线程执行网络操作
3. **错误处理**:
- 捕获 `BaseException` 处理SDK异常
- 显示友好的错误提示给用户
4. **多线程安全**:
- UI更新必须通过 `runOnUiThread`
- 避免在后台线程直接操作UI
### 改进建议
对于更流畅的用户体验,可以添加以下功能:
1. **长按连续控制**:实现按住按钮时连续发送控制命令
2. **速度调整**:添加滑块让用户调整云台速度
3. **角度可视化**:在界面上显示云台当前角度
4. **预设位功能**:支持保存和调用云台预设位置
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