Android: How can you get framebuffer (screenshot) on rooted device?

Question

I tried :

process = Runtime.getRuntime().exec(\"su -c cat /dev/graphics/fb0 > /sdcard/frame.raw\");
process.waitFor();

but it doesn\'t w

Answer 1

The answer lies in replicating the way the device itself handles it:

fb = open("/dev/graphics/fb0", O_RDONLY);

check this