android 手势

直接上代码

package com.webview;

import android.app.Activity;
import android.os.Bundle;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.widget.Toast;

public class GestureDetectorTest extends Activity{
	
	private GestureDetector detector;
	
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main1);
		detector=new GestureDetector(new DefaultGestureDetector());
	}

	@Override
	public boolean onTouchEvent(MotionEvent event) {
		return detector.onTouchEvent(event);
	}

	class DefaultGestureDetector extends SimpleOnGestureListener {

		@Override
		public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
				float velocityY) {
			/*
			 * 在此判断x，y 的座标
			 */
			final int FLING_MIN_DISTANCE=100;//X或者y轴上移动的距离(像素)
            final int FLING_MIN_VELOCITY=200;//x或者y轴上的移动速度(像素/秒)
            if((e1.getX()-e2.getX())>FLING_MIN_DISTANCE && Math.abs(velocityX)>FLING_MIN_VELOCITY)
                Toast.makeText(GestureDetectorTest.this, "向左滑动", Toast.LENGTH_SHORT).show();
            else if((e2.getX()-e1.getX())>FLING_MIN_DISTANCE && Math.abs(velocityX)>FLING_MIN_VELOCITY)
                Toast.makeText(GestureDetectorTest.this, "向右滑动", Toast.LENGTH_SHORT).show();
            return false;
		}
		
	}
	
	

}