Study on Android custom View (7)-View touch origin in XML

In XML layout, where is the touch origin of the custom View ?? This is another problem. The learning process is the process of constantly discovering and solving problems. Well, I believe everyone has a deep understanding. This time we will study the touch origin of View.

The following is the core code:

 

/** * Define Gesture Recognition **/ GestureDetector mGestureDetector;

/** * Register Gesture Recognition. Of course, this should be initialized in the constructor. **/ PublicVoidMyEvent (){ MGestureDetector =NewGestureDetector ( NewGestureDetector. SimpleOnGestureListener (){ PublicBooleanOnSingleTapUp (MotionEvent e ){ Log.V("OnTouchEvent", "e. getX ():" + e. getX () + "e. getY ():" + e. getY ()); ReturnTrue; } }); }

/** * Response Touch Screen **/ PublicBooleanOnTouchEvent (MotionEvent event ){ MGestureDetector. onTouchEvent (event ); ReturnTrue; }

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Run:

 

 

 

 

Click here:

 

 

 

Click to view log

 

 

 

 

Through observation, we found that this is consistent with the size of the View we defined. The result is self-evident, haha. The following section is a summary.

 

Download the OK source code