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androidbuttontouch

Activity's onTouchEvent() is not being called while clicking on Button


I want to do some B.logic in Activity.onTouchEvent() method. It is working fine for TextView and other non clickable views. However, it is not getting called uponclicking of Button. But I need that too.

Here is the code.

public class MainActivity extends Activity {
    private static final String TAG = MainActivity.class.getSimpleName();
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        findViewById(R.id.button1).setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this, "Oh shit!! click performed... :(", Toast.LENGTH_LONG).show();

            }
        });



    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        Log.d(TAG, "ssssssssssssssssssssssss:touch");
        return super.onTouchEvent(event);
    }

    public boolean dispatchTouchEvent(MotionEvent event) {
        int eventaction=event.getAction();

        switch(eventaction) {
        case MotionEvent.ACTION_MOVE:
            break;
        default:
            break;
        }

        return super.dispatchTouchEvent(event);
    }

}

Please help me to sort out from this.


Solution

  • I have used dispatchTouchEvent(MotionEvent ev) as required. Here is the solution.

    private boolean isInSideClicked = false;
    public boolean dispatchTouchEvent(MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_DOWN) {
            View content = findViewById(R.id.textView1);
            int[] contentLocation = new int[2];
            content.getLocationOnScreen(contentLocation);
            Rect rect = new Rect(contentLocation[0], 
                                 contentLocation[1], 
                                 contentLocation[0] + content.getWidth(), 
                                 contentLocation[1] + content.getHeight());
            
            View frame = findViewById(R.id.editText1);
            int[] frameLocation = new int[2];
            frame.getLocationOnScreen(frameLocation);
            Rect framerect = new Rect(frameLocation[0], 
                                      frameLocation[1], 
                                      frameLocation[0] + frame.getWidth(), 
                                      frameLocation[1] + frame.getHeight());
            Log.d(TAG, "rect:  "+rect.bottom+" , "+rect.top+" , "+rect.left+" , "+rect.right);
            Log.d(TAG, "FrameRect:  "+framerect.bottom+" , "+framerect.top+" , "+framerect.left+" , "+framerect.right);
            Log.d(TAG, "x: "+event.getX()+"  y: "+event.getY());
            
            if ((rect.contains((int)event.getX(), (int)event.getY()) || framerect.contains((int)event.getX(), (int)event.getY()) ) ) {
                isInSideClicked = true;
            }
            if (isInSideClicked){
                return super.dispatchTouchEvent(event); 
            } else {
                return true;
            }
        } else if (event.getAction() == MotionEvent.ACTION_UP && isInSideClicked) {
            isInSideClicked = false;
            return super.dispatchTouchEvent(event);
        } else if (event.getAction() == MotionEvent.ACTION_MOVE && isInSideClicked) {
            return super.dispatchTouchEvent(event);
        } else {
            isInSideClicked = false;
            return true; 
        }
    }
    

    Below is the hierarchy on how the touch event is processed by OS level.

    Activity.dispatchTouchEvent()
    ViewGroup.dispatchTouchEvent()
    View.dispatchTouchEvent()
    View.onTouchEvent()
    ViewGroup.onTouchEvent()
    Activity.onTouchEvent()
    

    With this I have restricted the touch events of the views which are not in required layouts/views.