B4J Question Adding an icon via code

I haven't tested to see if this fixes your problem but this solution jumps out at me. Use:
instead of

Roycefer said:

I haven't tested to see if this fixes your problem but this solution jumps out at me. Use:

B4X:

fx.LoadImageSample(File.DirAssets, "myimage.png", btn.width, btn.height)

instead of

B4X:

fx.LoadImage(File.DirAssets, "myimage.png")

Click to expand...

Thank you for your idea
in most cases using width and height of object after add it dynamical return non correct dimension ,so you must put calculated dimension
any way i modify to this code

but the problem now ,image not good like original when using LoadImageSample

You can't call btn.Width immediately after adding btn to its parent Node. You have to wait until the parent Node has completed measuring stuff and drawing the Button. Then, you can call btn.Width and it will return correct values. Unfortunately, I don't think there's an event that tells you when the parent Node has completed drawing the Button so you might try using a Timer to wait a few milliseconds after adding btn to its parent Node.

As for image quality, that's probably a result of how images are down-sampled by fx.LoadImageSample(). If you don't like how fx down-sampled your image, you can try using Photoshop or something to create a smaller version of myimage.png that is more to your liking and closer to the dimensions of btn. But regardless of how it is down-sampled, an image will have less apparent resolution than the image file that generated it if it is displayed at anything less than its native resolution. That's inescapable. If you have a 500x500 image and you're trying to display it in a 50x50 button, you have to discard 99% of the pixels that are in the original image.

Finally, it shouldn't matter much except for very small Buttons but fxLoadImageSample takes Double values and btn.Width gives Double values but your ButtonSetGraphic sub is asking for Int values. You should probably change it to ask for Double values.