API or method to convert gesture to text in android [duplicate]

Question

This question already has answers here:

Fling gesture detection on grid layout (18 answers)

Closed 9 years ago.

I am developing an application which will take gestures and convert those gestures to according text and store them in database. I want to know if there is any Android API or method for this task.

Answer 1

You can use a GestureDetector that generates String when a gesture is detected.

For example use OnGestureListener callbacks :

// From inside some Context (View, Activity, ...)
GestureDectector detector = new GestureDetector(this, new OnGestureListener() {

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
        gestureDetected("FLING"); // 'gestureDetected' is then a callback to invoke on 'conversion of a gesture into a string'
    }
});

Then MotionEvent have to be 'forwarded' to the GestureDetector, for example by overriding View.onTouchEvent(MotionEvent) :

public boolean onTouchEvent(MotionEvent event) {
    return detector.onTouchEvent(event);
}