Double tap event in android

Question

I need to toast something on double tap the screen. I tried the following code. But it's not working. No toast is coming on double tapping. What is wrong with these code?

package a.b.c;

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



public class SampleActivity extends Activity implements OnDoubleTapListener,OnGestureListener
{
        @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }

    @Override
    public boolean onDoubleTap(MotionEvent e) {
        if(e.getAction()==1)
        {
        Toast.makeText(getBaseContext(), "onDoubleTap", Toast.LENGTH_LONG).show();
        }
        return true;
    }

    @Override
    public boolean onDoubleTapEvent(MotionEvent e) {
        if(e.getAction()==1)
        {
        Toast.makeText(getBaseContext(), "onDoubleTapEvent", Toast.LENGTH_LONG).show();
        }
        return true;
    }

    @Override
    public boolean onSingleTapConfirmed(MotionEvent e) {
        if(e.getAction()==1)
        {
        Toast.makeText(getBaseContext(), "onSingleTapConfirmed", Toast.LENGTH_LONG).show();
        }
        return true;
    }

I also implemented the OnGestureListener methodes. But have no effect. Please help.

When you post code, please post parts relevant to the question..Why put header file import in the post? — Krishnabhadra, May 22 '12 at 10:00
i have answered [here](http://stackoverflow.com/a/16232779/1000864) — Nayanesh Gupte, Apr 26 '13 at 09:19

MikeIsrael · Accepted Answer · 2012-05-22T11:00:40.303

3

Where do you set the doubletap listener? Try adding this to your oncreate and see if it fixes the issue

GestureDetector detector = new GestureDetector(this, this);

edited May 22 '12 at 11:00

answered May 22 '12 at 10:00

MikeIsrael

2,871
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Whats TapDetector? Its not showing any built in class/method named TapDetector. – Ajay Soman May 22 '12 at 10:41
ok. now i need to know where should i invoke the detector object? – Ajay Soman May 22 '12 at 11:10

Double tap event in android

1 Answers1