How can I get height and width of an image?

Question

Why is the following bit of code returns Height: -1 which means that the height is yet not known. How to get height of the image?

 try {
        // Create a          


        

Answer 1

createImage runs in background to load the Image.

use a MediaTracker to wait for the loading and then use getHeight (and use a valid ImageObserver to prevent errors)