Temporary fix for unresponsive UI

Author: bmeike

AndroidUIDemo/src/com/oreilly/demo/android/pa/uidemo/TouchMe.java

@@ -19,6 +19,7 @@
 import android.view.View.OnKeyListener;
 import android.widget.Button;
 import android.widget.EditText;
+
 import com.oreilly.demo.android.pa.uidemo.model.Dot;
 import com.oreilly.demo.android.pa.uidemo.model.Dots;
 import com.oreilly.demo.android.pa.uidemo.view.DotView;
@@ -96,7 +97,7 @@ private void addDot(Dots dots, float x, float y, float p, float s) {
                 x,
                 y,
                 Color.CYAN,
-                (int) ((p * s * DOT_DIAMETER) + 1));
+                (int) ((p + 0.5) * (s + 0.5) * DOT_DIAMETER));
         }
     }
 
@@ -211,8 +212,10 @@ else if (hasFocus && (null == dotGenerator)) {
         dotModel.setDotsChangeListener(new Dots.DotsChangeListener() {
             @Override public void onDotsChange(Dots dots) {
                 Dot d = dots.getLastDot();
-                tb1.setText((null == d) ? "" : String.valueOf(d.getX()));
-                tb2.setText((null == d) ? "" : String.valueOf(d.getY()));
+                // This code makes the UI unacceptably unresponsive.
+                // ... investigating
+                //tb1.setText((null == d) ? "" : String.valueOf(d.getX()));
+                //tb2.setText((null == d) ? "" : String.valueOf(d.getY()));
                 dotView.invalidate();
             } });
     }

AndroidUIDemo/src/com/oreilly/demo/android/pa/uidemo/model/Dots.java

@@ -12,12 +12,12 @@ public interface DotsChangeListener {
         /** @param dots the dots that changed. */
         void onDotsChange(Dots dots);
     }
-    
+
     private final LinkedList<Dot> dots = new LinkedList<Dot>();
     private final List<Dot> safeDots = Collections.unmodifiableList(dots);
-    
+
     private DotsChangeListener dotsChangeListener;
-    
+
     /** @param l set the change listener. */
     public void setDotsChangeListener(DotsChangeListener l) {
         dotsChangeListener = l;
@@ -27,7 +27,7 @@ public void setDotsChangeListener(DotsChangeListener l) {
     public Dot getLastDot() {
         return (dots.size() <= 0) ? null : dots.getLast();
     }
-    
+
     /** @return immutable list of dots. */
     public List<Dot> getDots() { return safeDots; }
 
@@ -50,7 +50,7 @@ public void clearDots() {
 
     private void notifyListener() {
         if (null != dotsChangeListener) {
-            dotsChangeListener.onDotsChange(this); 
+            dotsChangeListener.onDotsChange(this);
         }
     }
 }