Android activity加入左右监听手势，页面是一个listview，不影响listview的点击事件

本文链接：https://blog.youkuaiyun.com/weimingchuan/article/details/50586220

本文介绍了一种自定义手势识别与ListView结合的应用场景，包括手势监听器的实现及与ListView的交互逻辑，展示了如何在Android应用中通过手势触发ListView的特定行为。

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package com.example.love.rsqfanye;


import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.webkit.WebView;
import android.widget.AdapterView;
import android.widget.ListView;

/**
 * @author liwan
 *         这里的GestureList是在xml布局的
 */
public class GestureTestActivity extends Activity {
    /**
     * 自定义的listview
     */
    ListView gestureListView;
    /**
     * 自定义的adapter
     */
    MyBaseAdapter myBaseAdapter;
    private GestureDetector mDetector;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        myBaseAdapter = new MyBaseAdapter(this);
        gestureListView = (ListView) this.findViewById(R.id.list1);

        WebView webView = new WebView(this);

        gestureListView.addHeaderView(webView);
        gestureListView.setAdapter(myBaseAdapter);
        gestureListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Log.i("isFling", "setOnItemClickListener");
                if (!(isFling && System.currentTimeMillis() - startFlingTime < 300)) {
                    ToastUtil.shortToast(GestureTestActivity.this, "点击了item");
                }

            }
        });
        //创建手势监听器对象
        mDetector = new GestureDetector(getApplicationContext(), new MyGestureListener());
    }

    //分发事件执行的入口，一定会首先执行
    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        //开启手势结束的动作
        mDetector.onTouchEvent(ev);//手势监听
        //isFling = false;
        Log.i("isFling", "dispatchTouchEvent");
        return super.dispatchTouchEvent(ev);
    }

    boolean isFling = false;
    long startFlingTime = 0;

    //继承了简单的手势类
    private class MyGestureListener extends GestureDetector.SimpleOnGestureListener {

        @Override
        public boolean onSingleTapConfirmed(MotionEvent e) {
            return super.onSingleTapConfirmed(e);
        }

        @Override
        public boolean onSingleTapUp(MotionEvent e) {
            return super.onSingleTapUp(e);
        }

        //做手势判断
        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            Log.i("isFling", "onFling");
            if (e1 != null && e2 != null) {
                //左滑动
                if (e1.getX() - e2.getX() > 100 && Math.abs(e1.getY() - e2.getY()) < 100) {
                    ToastUtil.shortToast(GestureTestActivity.this, "向左");
                    isFling = true;
                    startFlingTime = System.currentTimeMillis();
                    return true;
                }
                //右滑动
                else if (e1.getX() - e2.getX() < -100 && Math.abs(e1.getY() - e2.getY()) < 100) {
                    ToastUtil.shortToast(GestureTestActivity.this, "向右");
                    isFling = true;
                    startFlingTime = System.currentTimeMillis();
                    return true;
                }
            }
            startFlingTime = System.currentTimeMillis();
            isFling = false;
            return super.onFling(e1, e2, velocityX, velocityY);
        }
    }


}
代码下载地址：http://download.youkuaiyun.com/detail/weimingchuan/9418143