深入理解Android手势识别

// 单击，触摸屏按下时立刻触发
abstract boolean onDown(MotionEvent e);
// 抬起，手指离开触摸屏时触发(长按、滚动、滑动时，不会触发这个手势)
abstract boolean onSingleTapUp(MotionEvent e);
// 短按，触摸屏按下后片刻后抬起，会触发这个手势，如果迅速抬起则不会
abstract void onShowPress(MotionEvent e);
// 长按，触摸屏按下后既不抬起也不移动，过一段时间后触发
abstract void onLongPress(MotionEvent e);
// 滚动，触摸屏按下后移动
abstract boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY);
// 滑动，触摸屏按下后快速移动并抬起，会先触发滚动手势，跟着触发一个滑动手势
abstract boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY);
OnDoubleTapListener的接口有这几个：
// 双击，手指在触摸屏上迅速点击第二下时触发
abstract boolean onDoubleTap(MotionEvent e);
// 双击的按下跟抬起各触发一次
abstract boolean onDoubleTapEvent(MotionEvent e);
// 单击确认，即很快的按下并抬起，但并不连续点击第二下
abstract boolean onSingleTapConfirmed(MotionEvent e);

package noodies.blog.csdn.net;
import android.content.Context;
import android.view.MotionEvent;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.widget.Toast;
public class MyGestureListener extends SimpleOnGestureListener {
 private Context mContext;
 
 MyGestureListener(Context context) {
  mContext = context;
 }
 @Override
 public boolean onDown(MotionEvent e) {
  Toast.makeText(mContext, "DOWN " + e.getAction(), Toast.LENGTH_SHORT).show();
  return false;
 }
 @Override
 public void onShowPress(MotionEvent e) {
  Toast.makeText(mContext, "SHOW " + e.getAction(), Toast.LENGTH_SHORT).show();   
 }
 @Override
 public boolean onSingleTapUp(MotionEvent e) {
  Toast.makeText(mContext, "SINGLE UP " + e.getAction(), Toast.LENGTH_SHORT).show();
  return false;

 }
 @Override
 public boolean onScroll(MotionEvent e1, MotionEvent e2,
   float distanceX, float distanceY) {
  Toast.makeText(mContext, "SCROLL " + e2.getAction(), Toast.LENGTH_SHORT).show();
  return false;
 }
 @Override
 public void onLongPress(MotionEvent e) {
  Toast.makeText(mContext, "LONG " + e.getAction(), Toast.LENGTH_SHORT).show();
 }
 @Override
 public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
   float velocityY) {
  Toast.makeText(mContext, "FLING " + e2.getAction(), Toast.LENGTH_SHORT).show();
  return false;
 }
 @Override
 public boolean onDoubleTap(MotionEvent e) {
  Toast.makeText(mContext, "DOUBLE " + e.getAction(), Toast.LENGTH_SHORT).show();
  return false;
 }

 @Override

 public boolean onDoubleTapEvent(MotionEvent e) {

  Toast.makeText(mContext, "DOUBLE EVENT " + e.getAction(), Toast.LENGTH_SHORT).show();

  return false;

 }

 @Override

 public boolean onSingleTapConfirmed(MotionEvent e) {

  Toast.makeText(mContext, "SINGLE CONF " + e.getAction(), Toast.LENGTH_SHORT).show();

  return false;

 }

} 

package noodies.blog.csdn.net;
import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.MotionEvent;
public class GestureTestActivity extends Activity {
 private GestureDetector mGestureDetector;
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.main);
  mGestureDetector = new GestureDetector(this, new MyGestureListener(this));
 }
 @Override
 public boolean onTouchEvent(MotionEvent event) {
  return mGestureDetector.onTouchEvent(event);
 }

}

package noodies.blog.csdn.net;
import android.content.Context;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
public class MyView extends View {
 private GestureDetector mGestureDetector;
 public MyView(Context context, AttributeSet attrs) {
  super(context, attrs);
  mGestureDetector = new GestureDetector(context, new MyGestureListener(context));
  setLongClickable(true);
  this.setOnTouchListener(new OnTouchListener() {
   public boolean onTouch(View v, MotionEvent event) {
    return mGestureDetector.onTouchEvent(event);
   }

  });

 }

}