CODEWITHSUNDEEP
androidgraphicsbitmapout-of-memoryandroid-canvas
Maurice Lam
Maurice Lam

Reputation: 354

1-bit based Bitmap in Android

I am trying to cache big bitmaps for drawing on screen in Android. But now I am facing OutOfMemoryException, say that the bitmap allocation exceeds the VM budget.

I need to minimize the size of the bitmap but I cannot reduce the resolution. For my use case, I need to only save the shape of the bitmap and apply color later when actually drawing, so I am using ALPHA_8 as the bitmap configuration.

I want to know if there is a 1-bit pixel (either completely opaque or completely transparent) configuration in bitmap, or any similar ways to save memory?

Upvotes: 1

Views: 407

Answers (1)

JBM
JBM

Reputation: 2962

Reducing the color depth from 8 bits to 1 would, of course, help a little. However, it doesn't really solve the problem but just postpones it. It only means that you'll get the OOME later but you'll still get it.

Consider moving your cache from RAM to disk and, optionally, add a smaller RAM-based cache on top of it to improve performance.

Upvotes: 1

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