android开发之为activity增加左右手势识别示例

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复制代码
/*
 *  for左右手势
 *  1.复制下面的内容到目标Activity
 *  2.目标Activity的onCreate()调用initGesture()
 *  3.目标Activity需implements OnTouchListener, OnGestureListener
 */
   private GestureDetector mGestureDetector;
   private int verticalMinDistance = 180;
   private int minVelocity         = 0;

 

   private void initGesture() {
    mGestureDetector = new GestureDetector((OnGestureListener) this);
   }

  public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {

       if (e1.getX() - e2.getX() > verticalMinDistance && Math.abs(velocityX) > minVelocity) {

           // 切换Activity
           // Intent intent = new Intent(ViewSnsActivity.this, UpdateStatusActivity.class);
           // startActivity(intent);
           //Toast.makeText(this, "向左手势", Toast.LENGTH_SHORT).show();
       } else if (e2.getX() - e1.getX() > verticalMinDistance && Math.abs(velocityX) > minVelocity) {

           // 切换Activity
           // Intent intent = new Intent(ViewSnsActivity.this, UpdateStatusActivity.class);
           // startActivity(intent);
        //Toast.makeText(this, "向右手势", Toast.LENGTH_SHORT).show();
           finish();
           overridePendingTransition(R.anim.push_right_in, R.anim.push_right_out);
       }

       return false;
   }