How to get when an ImageView is completely loaded in Android

Call loadBitmapFromView in a such way:

mImage.post(new Runnable() {
    @Override
    public void run() {
        loadBitmapFromView(mImage);
    }
});

Runnable provided to post() method will be executed after view measuring and layouting, so getWidth() and getHeight() will return actual width and height.

What else can you do, is measuring View manually, by invoking measure, and then taking result from getMeasuredWidth() and getMeasuredHeight(). But I do not recommend this way.

There is actually another, more reliable way to do that by using ViewTreeObserver.OnPreDrawListener. And here is an example:

mImage.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
    @Override
    public boolean onPreDraw() {
        try {
            loadBitmapFromView(mImage);            
             // Note that returning "true" is important,
             // since you don't want the drawing pass to be canceled
            return true;    
        } finally {
            // Remove listener as further notifications are not needed
            mImage.getViewTreeObserver().removeOnPreDrawListener(this);
        }
    }
});

Using OnPreDrawListener guarantees that View was measured and layouted, while View#post(Runnable) just executes your Runnable when all Views are already most likely measured and layouted.