1、在/hardware/libhardware/modules/gralloc/framebuffer.cpp中的

fb_device_open(hw_module_t const* module, const char* name,hw_device_t** device)中改动

// int format = (m->info.bits_per_pixel == 32)
// HAL_PIXEL_FORMAT_RGBX_8888
// : HAL_PIXEL_FORMAT_RGB_565;

int format = (m->info.bits_per_pixel == 32)
HAL_PIXEL_FORMAT_BGRA_8888
: HAL_PIXEL_FORMAT_RGB_565;

当framebuffer是32位色深时选择HAL_PIXEL_FORMAT_BGRA_8888格式；