[android-developers] How to improve performance for drawing with background image?

Hi,

I have done a few painting apps and they all worked fine as long as I don't use background images. Once I added background image, the painting becomes sluggish.

I have tried 2 methods of adding background image:

- use setBackgroundDrawable

- in the layout, I created an overlapping imageView with the background image using FrameLayout

Once I removed the background image, the drawing is smooth again. Is there any suggestions for me to improve the performance?

Thanks!

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