¶ Install Android Studio
- Enter the official Android development website
- Double-click
android-studio-2022.1.1.19-windows.exeto run the installation
¶ Create system app demo
- Create a project, as shown in the animation below.
-
Add system signature file
-
In the project directory, create a new security folder to store the system signature file.
-
Store the system signature file
youyeetooR1.keystorelinked below to the security folder.
- youyeetooR1.keystore
Official Download
http://dd.youyeetoo.cn:5000/sharing/FtCr6vMpI
Google Download
https://drive.google.com/drive/folders/1xqTZaTe1P99kw64I5C9bTa1ciVyAGwrN?usp=drive_link
- Click
File->Project Structure...->Modules->Signing Configs - Click
+belowSigning Configs, enteryouyeetooR1, and press Enter. Fill in the information in the appropriate positions.
Store File: Click the folder icon to select the path where youyeetooR1.keystore is storedStore Password: fill in youyeetooKey Alias: fill in youyeetooKey Password: fill in youyeetoo
- Click
Build Variants->Build Types->debug->Signing Config. Select$signingConfigs.youyeetooR1. The animation is shown below.
- Add system permissions
In the AndroidManifest.xml file add
android:sharedUserId="android.uid.system"
tools:ignore="Deprecated"
-
Add framework.jar
-
Download the source code (on the Ubuntu host)
- Android source code
Official Download
http://dd.youyeetoo.cn:5000/sharing/DJsrySTVg
Google Download
https://drive.google.com/drive/folders/1Hx0W9PbVZlk0SdM39863JLzHeb4h023K?usp=drive_link
- Unzip the source code (on the Ubuntu host)
cat youyeetooR1-Android13.tar.gz0* > youyeetooR1-Android13.tar.gz
tar -xzvf youyeetooR1-Android13.tar.gz
- Compile (on Ubuntu host)
cd youyeetooR1-Android13
source build/envsetup.sh
lunch youyeetooR1-userdebug
./build.sh -UKAu
- Package
framework.jar(on the Ubuntu host)
make javac-check-framework
Packaging is completed and generated out/target/common/obj/JAVA_LIBRARIES/framework_intermediates/classes.jar document. Copy the classes.jar file to the app/libs directory in the project directory.
- Add classes.jar to Android library
- Switch to Project view.
- Right click app/libs/classes.jar. Select
Add As Library...
- Modify build.gradle in the app directory.
change
dependencies {
...
implementation files('libs\\classes.jar')
...
}
to
dependencies {
...
compileOnly files('libs\\classes.jar')
...
}