Android中Touch事件的传递机制

 1 public class DrawRectView extends View {
 2 
 3     private Paint mPaint;
 4 
 5     public DrawRectView(Context context) {
 6         super(context);
 7         mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
 8     }
 9 
10     public DrawRectView(Context context, AttributeSet set) {
11         super(context, set);
12         mPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
13     }
14 
15     @Override
16     public boolean dispatchTouchEvent(MotionEvent event) {
17         Log.v(LogUtils.TAG, "DrawRectView dispatchTouchEvent action=" + event.getAction());
18         return super.dispatchTouchEvent(event);
19     }
20 
21 
22     @Override
23     protected void onDraw(Canvas canvas) {
24         super.onDraw(canvas);
25         mPaint.setColor(Color.YELLOW);
26         canvas.drawRect(0, 0, 300, 300, mPaint);
27     }
28 
29     @Override
30     public boolean onTouchEvent(MotionEvent event) {
31         Log.v(LogUtils.TAG, "DrawRectView onTouchEvent action=" + event.getAction());
32         return super.onTouchEvent(event);
33     }
34 }

 1 public class MyLayout extends RelativeLayout {
 2 
 3     public MyLayout(Context context, AttributeSet attrs) {
 4         super(context, attrs);
 5     }
 6 
 7     @Override
 8     public boolean dispatchTouchEvent(MotionEvent ev) {
 9         Log.v(LogUtils.TAG, "MyLayout dispatchTouchEvent action=" + ev.getAction());
10         return super.dispatchTouchEvent(ev);
11     }
12 
13     @Override
14     public boolean onInterceptTouchEvent(MotionEvent ev) {
15         Log.v(LogUtils.TAG, "MyLayout onInterceptTouchEvent action=" + ev.getAction());
16         return super.onInterceptTouchEvent(ev);
17     }
18 
19     @Override
20     public boolean onTouchEvent(MotionEvent event) {
21         Log.v(LogUtils.TAG, "MyLayout onTouchEvent event=" + event.getAction());
22         return super.onTouchEvent(event);
23     }

 1 public class TouchTestActivity extends Activity {
 2 
 3     private DrawRectView mDrawRectView;
 4 
 5     @Override
 6     protected void onCreate(Bundle savedInstanceState) {
 7         super.onCreate(savedInstanceState);
 8         setContentView(R.layout.touch_test_activity);
 9 
10         mDrawRectView = (DrawRectView) findViewById(R.id.draw_rect_view);
11         mDrawRectView.setOnTouchListener(new OnTouchListener() {
12             @Override
13             public boolean onTouch(View v, MotionEvent event) {
14                 Log.v(LogUtils.TAG, "mDrawRectView OnTouchListener action=" + event.getAction());
15                 return false;
16             }
17         });
18     }
19 
20     @Override
21     public boolean dispatchTouchEvent(MotionEvent ev) {
22         Log.v(LogUtils.TAG, "TouchTestActivity dispatchTouchEvent action=" + ev.getAction());
23         return super.dispatchTouchEvent(ev);
24     }
25 
26     @Override
27     public boolean onTouchEvent(MotionEvent event) {
28         Log.v(LogUtils.TAG, "TouchTestActivity onTouchEvent action=" + event.getAction());
29         return super.onTouchEvent(event);
30     }
31 }

 1 <com.yangy.test.custom_view.MyLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     android:layout_width="match_parent"
 3     android:layout_height="match_parent" >
 4     
 5     <com.yangy.test.custom_view.DrawRectView
 6         android:id="@+id/draw_rect_view"
 7         android:layout_width="300dp"
 8         android:layout_height="300dp"
 9         android:layout_centerInParent="true" />
10 
11 </com.yangy.test.custom_view.MyLayout>