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Editorial Team
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Asked: 2026-05-25T00:19:20+00:00

I’m using native code and I have a buffer of pixels (i.e int* buffer).

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I’m using native code and I have a buffer of pixels (i.e int* buffer). I want to create a android.util.Bitmap instance from the buffer with a specific width, height.

Currently, I return the buffer to Java and using android.graphics.Bitmap.createBitmap() to create a Bitmap instance. But it seems to be not efficient and it throws OutOfMemoryException in my phone (less resources), but work in tablet (more resources).

My question is: How can I create a Bitmap instance in the native way (i.e. create such instance in C and return as a Bitmap in Java using JNI interface)?

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1 Answer

  1. Editorial Team

    How large is the bitmap? if it throws OOM in Java, any attempt to pass it back from C would probably do the same – it will still need to consume Java memory. Consider a bitmap format that takes less space per pixel – say, RGB_565, or ARGB_4444.

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