package com.example.simplegesturedetector;

import android.os.Bundle;
import android.util.Log;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

private GestureDetector mDetector;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // this is the view we will add the gesture detector to
    View myView = findViewById(R.id.textView1);

    // get the gesture detector
    mDetector = new GestureDetector(this, new MyGestureListener());

    // Add a touch listener to the view
    // The touch listener passes all its events on to the gesture detector
    myView.setOnTouchListener(touchListener);
}

// This touch listener passes everything on to the gesture detector.
// That saves us the trouble of interpreting the raw touch events
// ourselves.
View.OnTouchListener touchListener = new View.OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        // pass the events to the gesture detector
        // a return value of true means the detector is handling it
        // a return value of false means the detector didn't
        // recognize the event
        return mDetector.onTouchEvent(event);
    }
};

// In the SimpleOnGestureListener subclass you should override
// onDown and any other gesture that you want to detect.
class MyGestureListener extends GestureDetector.SimpleOnGestureListener {

    @Override
    public boolean onDown(MotionEvent event) {
        Log.d("TAG","onDown: ");
        // don't return false here or else none of the other
        // gestures will work
        return true;
    }

    @Override
    public boolean onSingleTapConfirmed(MotionEvent e) {
        Log.i("TAG", "onSingleTapConfirmed: ");
        return true;
    }

    @Override
    public void onLongPress(MotionEvent e) {
        Log.i("TAG", "onLongPress: ");
    }

    @Override
    public boolean onDoubleTap(MotionEvent e) {
        Log.i("TAG", "onDoubleTap: ");
        return true;
    }

    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
        Log.i("TAG", "onScroll: ");
        return true;
    }

    @Override
    public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX, float velocityY) {
        Log.d("TAG", "onFling: ");
        return true;
    }
}
}