---
title: "Android - basic gesture detection"  
description: "Android - basic gesture detection"  
author: "Anonymous User"  
published: 2015-05-19  
updated: 2020-09-18  
canonical: https://www.mindstick.com/interview/2548/android-basic-gesture-detection  
category: "android"  
tags: ["android"]  
reading_time: 3 minutes  

---

# Android - basic gesture detection

I've been battling to get fling gesture detection working on my Android application today.Nothing has worked for me please help

## Answers

### Answer by Anonymous User

Let your activity implement OnClickListener as usual:\

```
public class SelectFilterActivity extends Activity implements OnClickListener{    private static final int SWIPE_MIN_DISTANCE = 120;    private static final int SWIPE_MAX_OFF_PATH = 250;    private static final int SWIPE_THRESHOLD_VELOCITY = 200;    private GestureDetector gestureDetector;    View.OnTouchListener gestureListener;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        /* ... */        // Gesture detection        gestureDetector = new GestureDetector(this, new MyGestureDetector());        gestureListener = new View.OnTouchListener() {            public boolean onTouch(View v, MotionEvent event) {                return gestureDetector.onTouchEvent(event);            }        };    }    class MyGestureDetector extends SimpleOnGestureListener {        @Override        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {            try {                if (Math.abs(e1.getY() - e2.getY()) > SWIPE_MAX_OFF_PATH)                    return false;                // right to left swipe                if(e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {                    Toast.makeText(SelectFilterActivity.this, "Left Swipe", Toast.LENGTH_SHORT).show();                }  else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) > SWIPE_THRESHOLD_VELOCITY) {                    Toast.makeText(SelectFilterActivity.this, "Right Swipe", Toast.LENGTH_SHORT).show();                }            } catch (Exception e) {                // nothing            }            return false;        }            @Override        public boolean onDown(MotionEvent e) {              return true;        }    }}
```

\
Attach your gesture listener to all the views you add to the main layout;\

```
// Do this for each view added to the gridimageView.setOnClickListener(SelectFilterActivity.this); imageView.setOnTouchListener(gestureListener);
```

Watch in awe as your overridden methods are hit, both the onClick(View v) of the activity and the onFling of the gesture listener.\

```
public void onClick(View v) {        Filter f = (Filter) v.getTag();        FilterFullscreenActivity.show(this, input, f);}
```

The post 'fling' dance is optional but encouraged.\
Hope this helps someone else!

### Answer by Anonymous User

I've been battling to get fling gesture detection working on my Android application today.Nothing has worked for me please help


---

Original Source: https://www.mindstick.com/interview/2548/android-basic-gesture-detection

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