Baseflow
Is there is any way to disable medium scale
Hi, In my application I only want two level of zoom, is there is any interface to do the same. Passing the same value in setScaleLevels for min and medium gives error.
Ah by the way it needs an explanation: to disable medium zoom just call
photoView.setMediumScale(-999)
in onCreate or onCreateView etc.
@CapnSpellcheck That will produce an IllegalArgumentException, cause PhotoViewAttacher checks the new scale when you set it. (v 1.3.1)
PhotoViewAttacher.java
private static void checkZoomLevels(float minZoom, float midZoom,
float maxZoom) {
if (minZoom >= midZoom) {
throw new IllegalArgumentException(
"Minimum zoom has to be less than Medium zoom. Call setMinimumZoom() with a more appropriate value");
} else if (midZoom >= maxZoom) {
throw new IllegalArgumentException(
"Medium zoom has to be less than Maximum zoom. Call setMaximumZoom() with a more appropriate value");
}
}
That's why the patch includes PhotoViewAttacher ;-)
In any case, my patch is a suggestion, and works for me, I wanted a solution quickly. Anyone who wants to move this toward a PR, might want to formalize a bit more.
try this
photoViewAttacher.setOnDoubleTapListener(new GestureDetector.OnDoubleTapListener() {
@Override
public boolean onSingleTapConfirmed(MotionEvent e) {
return false;
}
boolean isMaximum = false;
@Override
public boolean onDoubleTap(MotionEvent e) {
if (!isMaximum) {
photoViewAttacher.setScale(photoViewAttacher.getMaximumScale());
isMaximum = true;
} else {
photoViewAttacher.setScale(photoViewAttacher.getMinimumScale());
isMaximum = false;
}
return false;
}
@Override
public boolean onDoubleTapEvent(MotionEvent e) {
return false;
}
});
if you double tap, medium scale is working. so, you can limit medium scale to its minimum scale. so the solution is :
// to avoid this exception "Minimum zoom has to be less than Medium zoom. Call setMinimumZoom() with a more appropriate value");
photoView.setMediumScale (mPhotoView.getMinimumScale()+ 0.0001f)
photoView.minimumScale = mPhotoView.getMinimumScale()
