01-Android_Common_System_Customization

Symbol Explanation

  • SDK$: Refers to the source code path.

  • console$: Generally refers to the command-line console of the motherboard. Mainboard Command-line Console

  • ADB$: Android Debug Bridge command-line tool, generally refers to an environment where ADB can be run.

System Platform

(SDK)$ source build/envsetup.sh
(SDK)$ lunch 
(SDK)$ get_build_var TARGET_BOARD_PLATFORM_PRODUCT
tablet

Select rk3576_u-userdebug in the lunch menu.

The boot logo is divided into two parts, namely the Uboot stage and the Kernel stage. The Uboot stage parses and displays the image kernel-6.1/logo.bmp. The Kernel stage parses and displays the image kernel-6.1/logo_kernel.bmp.

(SDK)$ ls kernel-6.1/*.bmp
kernel-6.1/logo.bmp  kernel-6.1/logo_kernel.bmp

Boot Animation

Display Orientation Configuration

Default Display Orientation Configuration

Modify the SF_PRIMARY_DISPLAY_ORIENTATION configuration, and set the rotation degree to 0/90/180/270.

ADB Display Orientation Configuration

Default to Never Sleep

Default to No Lock Screen

FAQ

The Problem of Exclamation Mark on the Signal

image-20241127174458223 The native Google system will send a request to the server captive_portal_server to determine whether the network is available. If you don't want this to happen, configure the captive_portal_server and restart the device.

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