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public class MyGesture extends Activity implements OnTouchListener, OnGestureListener { private GestureDetector mGestureDetector; public MyGesture() { mGestureDetector = new GestureDetector(this); } public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); TextView tv = (TextView) findViewById(R.id.tv); tv.setOnTouchListener(this); tv.setFocusable(true); tv.setClickable(true); tv.setLongClickable(true); mGestureDetector.setIsLongpressEnabled(true); } /* * *在onTouch()方法中,我们调用GestureDetector的onTouchEvent()方法, * 将捕捉到的MotionEvent交给GestureDetector * 来分析是否有合适的callback函数来处理用户的手势 */ public boolean onTouch(View v, MotionEvent event) { return mGestureDetector.onTouchEvent(event); } // 用户轻触触摸屏,由1个MotionEvent ACTION_DOWN触发 public boolean onDown(MotionEvent arg0) { Log.i("MyGesture", "onDown"); Toast.makeText(this, "onDown", Toast.LENGTH_SHORT).show(); return true; } /* * * 用户轻触触摸屏,尚未松开或拖动,由一个1个MotionEvent ACTION_DOWN触发 * * 注意和onDown()的区别,强调的是没有松开或者拖动的状态 */ public void onShowPress(MotionEvent e) { Log.i("MyGesture", "onShowPress"); Toast.makeText(this, "onShowPress", Toast.LENGTH_SHORT).show(); } // 用户(轻触触摸屏后)松开,由一个1个MotionEvent ACTION_UP触发 public boolean onSingleTapUp(MotionEvent e) { Log.i("MyGesture", "onSingleTapUp"); Toast.makeText(this, "onSingleTapUp", Toast.LENGTH_SHORT).show(); return true; } // 用户按下触摸屏、快速移动后松开,由1个MotionEvent ACTION_DOWN, 多个ACTION_MOVE, 1个ACTION_UP触发 public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { Log.i("MyGesture", "onFling"); Toast.makeText(this, "onFling", Toast.LENGTH_LONG).show(); return true; } // 用户按下触摸屏,并拖动,由1个MotionEvent ACTION_DOWN, 多个ACTION_MOVE触发 public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { Log.i("MyGesture", "onScroll"); Toast.makeText(this, "onScroll", Toast.LENGTH_LONG).show(); return true; } // 用户长按触摸屏,由多个MotionEvent ACTION_DOWN触发 public void onLongPress(MotionEvent e) { Log.i("MyGesture", "onLongPress"); Toast.makeText(this, "onLongPress", Toast.LENGTH_LONG).show(); } } 3. Fling事件的处理代码:除了第一个触发Fling的ACTION_DOWN和最后一个ACTION_MOVE中包含的坐标等信息外,我们还可以根据用 户在X轴或者Y轴上的移动速度作为条件。比如下面的代码中我们就在用户移动超过100个像素,且X轴上每秒的移动速度大于200像素时才进行处理。 [java] view plain copy public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { // 参数解释: // e1:第1个ACTION_DOWN MotionEvent // e2:最后一个ACTION_MOVE MotionEvent // velocityX:X轴上的移动速度,像素/秒 // velocityY:Y轴上的移动速度,像素/秒 // 触发条件 : // X轴的坐标位移大于FLING_MIN_DISTANCE,且移动速度大于FLING_MIN_VELOCITY个像素/秒 final int FLING_MIN_DISTANCE = 100, FLING_MIN_VELOCITY = 200; if (e1.getX() - e2.getX() > FLING_MIN_DISTANCE && Math.abs(velocityX) > FLING_MIN_VELOCITY) { // Fling left Log.i("MyGesture", "Fling left"); Toast.makeText(this, "Fling Left", Toast.LENGTH_SHORT).show(); } else if (e2.getX() - e1.getX() > FLING_MIN_DISTANCE && Math.abs(velocityX) > FLING_MIN_VELOCITY) { // Fling right Log.i("MyGesture", "Fling right"); Toast.makeText(this, "Fling Right", Toast.LENGTH_SHORT).show(); } return false; }
随笔,摘自http://blog.csdn.net/tianfeng701/article/details/7556366
GestureDetector.OnGestureListener接口实现点击双击滑动事件
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原文地址:http://www.cnblogs.com/metatron/p/metatron001.html