Android双击

1. Activity代码

package com.example.mydoubletap;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.view.GestureDetectorCompat;

import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.widget.TextView;


public class MainActivity extends AppCompatActivity{

    private static final String DEBUG_TAG = "Gestures";
    private TextView textView;
    private GestureDetectorCompat gestureDetectorCompat;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textView = findViewById(R.id.textView);
        gestureDetectorCompat = new GestureDetectorCompat(this, new mySimpleGestureListener());
    }

    @Override
    public boolean onTouchEvent(MotionEvent event){
        this.gestureDetectorCompat.onTouchEvent(event);
        return super.onTouchEvent(event);
    }

    class mySimpleGestureListener extends GestureDetector.SimpleOnGestureListener {
        @Override
        public boolean onDoubleTap(MotionEvent event) {
            Log.d(DEBUG_TAG,"DoubleTap");
            return true;
        }
    }
}

2. 主要代码

@Override
    public boolean onTouchEvent(MotionEvent event){
        this.gestureDetectorCompat.onTouchEvent(event);
        return super.onTouchEvent(event);
    }

//内联

class mySimpleGestureListener extends GestureDetector.SimpleOnGestureListener {
        @Override
        public boolean onDoubleTap(MotionEvent event) {
            Log.d(DEBUG_TAG,"DoubleTap");
            return true;
        }
    }

参考链接：
https://developer.android.google.cn/training/gestures/detector
https://www.runoob.com/w3cnote/android-tutorial-touchlistener-ontouchevent.html