Zoomed image plus ViewPage

[xmenxwk]

Assume there are 2 images in a ViewPager and when zooming the first one and try to pan(drag), the parent viewpager scrolls to second image instead of image panning. Using this.getParent().requestDisallowInterceptTouchEvent(true); inside onTouchEvent of does the trick but where should I allow it. If you can update the code, it would be awesome. I'm new to android.

[cargo8]

You should extend the ImageViewZoom with your own ImageView subclass. Then try something like this:

this.setOnTouchListener(new OnTouchListener() {
@OverRide
public boolean onTouch(View v, MotionEvent event) {
if (getScale() > 1f) {
getParent().requestDisallowInterceptTouchEvent(true);
} else {
getParent().requestDisallowInterceptTouchEvent(false);
}
return false;
}
});

This should basically disallow paging whenever the image is scaled/zoomed beyond 1x. Thus, the user must zoom out in order to page.

[xmenxwk]

Thank you, thats a good idea, but is it possible to do without zoom out, I mean when it reaches the max bound, let the parent allow.

[femosso]

Take a look at this:

http://stackoverflow.com/questions/14764603/how-to-intercept-touch-events-from-viewpager-onpagechangelistener

[xmenxwk]

@femosso : Thats not what I meant. How do I know user reached to max bound ?

[whgreate]

did you solve this problem , i have this too !

[xmenxwk]

Nope, I used the above method.

[saishneugi]

I know this is a very old post but i couldnt find a solution else where other than this so if anyones der please respond.@cargo8 solution works fine but the getScale() method seems to be deprecated in the present versions of android. So i used getScaleFactor() method. But it returns value as 1.0 however your resize your image. How can we check the actual scale value of the image?

[RaidenX5]

Try this :

imageviewtouch.setOnTouchListener(new View.OnTouchListener() {
@OverRide
public boolean onTouch(View view, MotionEvent motionEvent) {

            switch (motionEvent.getAction()) {
                case MotionEvent.ACTION_DOWN:
                    Log.d("touchme", "down");
                    view.getParent().requestDisallowInterceptTouchEvent(true);
                    //view.requestDisallowInterceptTouchEvent(true);
                    break;
                case MotionEvent.ACTION_CANCEL:
                case MotionEvent.ACTION_UP:
                    Log.d("touchme", "up");
                    view.getParent().requestDisallowInterceptTouchEvent(false);
                    //view.requestDisallowInterceptTouchEvent(false);
                    break;
                default:
                    break;
            }
            return false;
        }
    });

This will disable scrollview for taking touch event from imageviewtoich if the imageviewtouch still getting touch, will enable scroll on parent after imageviewtouch not receiving touch.