How To Get If Pinch Zoom In Is Performed Or Pinch Zoom Out In Android

I'm working on an application in which I have used custom mapView, and on that mapView if user pinch(two finger gesture), the camera position for map should change accordingly, for

Solution 1:

As pskink recommended, you need ScaleGestureDetector object, which determines zoom "direction". Something like that:

ScaleGestureDetectormScaleDetector=newScaleGestureDetector(getContext(),
        newScaleGestureDetector.SimpleOnScaleGestureListener() {

            privatefloatscaleFactor=1f;

            @OverridepublicbooleanonScale(ScaleGestureDetector detector) {
                // store scale factor for detect zoom "direction" on end
                scaleFactor = detector.getScaleFactor();
                returntrue;
            }

            @OverridepublicvoidonScaleEnd(ScaleGestureDetector detector) {
                floatcurrentZoom= mGoogleMap.getCameraPosition().zoom;
                if (scaleFactor > 1) {
                    // zoom in detected
                    mGoogleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(mZoomCenter, currentZoom + 1));
                } elseif (scaleFactor < 1) {
                    // zoom out detected
                    mGoogleMap.moveCamera(CameraUpdateFactory.newLatLngZoom(mZoomCenter, currentZoom - 1));
                }
                super.onScaleEnd(detector);
            }
        });

And you can use it in your EnhanchedMapView.dispatchTouchEvent() easily:

...
@Override
public boolean dispatchTouchEvent(MotionEvent event) {

    // just call .onTouchEvent() on your ScaleGestureDetector object
    mScaleDetector.onTouchEvent(event);

    switch (event.getAction() & MotionEvent.ACTION_MASK) {
    ...

NB! You need to disable GoogleMap zoom gesture

@OverridepublicvoidonMapReady(GoogleMap googleMap) {
    mGoogleMap = googleMap;
    mGoogleMap.getUiSettings().setZoomGesturesEnabled(false);
    ...
}

and never enable it.