I finally discovered how to do a pinch-zoom on the Android emulator for Android Studio 3.2. This was hard to find, but hope it helps someone. move your mouse to where you want the centre of the pinch zoom. (do NOT press the mouse button) press SHIFT (do not press the mouse button) press Command … Read more
EDIT 2: Example code has been pushed to the master branch of TouchImageView. Here is a link to the example activity and a link to the ExtendedViewPager. EDIT: added code adapting the example link to TouchImageView. Note: you will need the latest code, which is currently in the dev branch. In the future, this will … Read more
You can use this import android.content.Context; import android.graphics.Canvas; import android.graphics.drawable.BitmapDrawable; import android.util.AttributeSet; import android.util.Log; import android.view.MotionEvent; import android.view.ScaleGestureDetector; import android.view.View; public class MyImageView extends View { private static final int INVALID_POINTER_ID = -1; private Drawable mImage; private float mPosX; private float mPosY; private float mLastTouchX; private float mLastTouchY; private int mActivePointerId = INVALID_POINTER_ID; private ScaleGestureDetector … Read more
Updated Answer Code can be found here : official-doc Answer Outdated Check out the following links which may help you Best examples are provided in the below links, which you can refactor to meet your requirements. Implementing the pinch zoom gesture Android-pinch GestureDetector.SimpleOnGestureListener
Please follow the below class, that is used for Zoom in and Zoom Out for ImageView. import android.app.Activity; import android.graphics.Matrix; import android.graphics.PointF; import android.os.Bundle; import android.util.Log; import android.view.MotionEvent; import android.view.View; import android.view.View.OnTouchListener; import android.widget.ImageView; public class ZoomInZoomOut extends Activity implements OnTouchListener { private static final String TAG = “Touch”; @SuppressWarnings(“unused”) private static final float MIN_ZOOM … Read more