获取Android屏幕事件

package ls.androidtester.toucher;

import android.app.Activity;

import android.os.Bundle;

import android.view.MotionEvent;

import android.widget.TextView;

import android.widget.Toast;

public class ToucherPointActivity extends Activity {

      private TextView tv;

   /** Called when the activity is first created. */

   @Override

   public void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.main);

       tv = (TextView)findViewById(R.id.tv);

   }

   //点击

   public boolean onTouchEvent(MotionEvent event) {

         int[] rigin = new int[2];

         switch (event.getAction())

         {

         //触摸屏幕时刻

         case MotionEvent.ACTION_DOWN:

                 showXY(event.getX(), event.getY());

         break;

         //触摸并移动时刻

         case MotionEvent.ACTION_MOVE:

         break;

         //终止触摸时刻

         case MotionEvent.ACTION_UP:

             showXY(event.getX(), event.getY());

         break;

         }

       return super.onTouchEvent(event);

   }