I want to change pixel color via android application using background. It means entire screen, not image file.
How can I modify pixel color?
Result of searching, I could find "Bitmap", "Surfaceflinger", "Framebuffer".
but, I don't know what is correct way.
The concept SurfaceFlinger and Framebuffer is a low level concept in Android system. In application level, which built on framework, these concepts are opaque.
As Bitmap, it's not very necessary if you just change the background color.
You can just simply do like following in your Activity.
getWindow().setBackgroundDrawableResource(R.color.color_res_id);
// or change the root view background
getWindow().getDecorView().setBackgroundResource(R.color.color_res_id);
If you are novice in Android app development, you can start reading the training here, it's a good source for beginner to start.
