How To Release Camera After Activity Ends In Android?

I am working on an application that requires to scan a QR code and click pictures, but sometimes it so happens that the camera application crashes and it says that the Android Came

Solution 1:

Put Below code in your onDestroy method of your activity:

protected void onDestroy(){

if(camera!=null){
            camera.stopPreview();
            camera.setPreviewCallback(null);

            camera.release();
            camera = null;
        }


}

If you are using separate Preview class then add below code in that:

public void surfaceDestroyed(SurfaceHolder holder) {

        if(camera!=null){
            camera.stopPreview();
            camera.setPreviewCallback(null);

            camera.release();
            camera = null;
        }

    }