android11，12 Launcher3编译什么

1首先看看手机里的是什么

adb shell pm path com.android.launcher3

package:/system_ext/priv-app/Launcher3QuickStep/Launcher3QuickStep.apk

然后就编译Launcher3QuickStep

2push apk

没什么说的，push到对应的文件夹

/system_ext/priv-app/Launcher3QuickStep/Launcher3QuickStep.apk

3reboot

有可能起不来，因为权限的问题啥的，别着急，缺啥权限，补什么权限，不用改代码，直接修改push。

开机起不来，抓log，会出现下面的fatal exception，一看缺下面的权限

08-25 14:16:01.118 11140 11140 D AndroidRuntime: Shutting down VM
08-25 14:16:01.118 11140 11140 E AndroidRuntime: *** FATAL EXCEPTION IN SYSTEM PROCESS: main
08-25 14:16:01.118 11140 11140 E AndroidRuntime: java.lang.IllegalStateException: Signature|privileged permissions not in privapp-permissions allowlist: {com.android.launcher3 (/system_ext/priv-app/Launcher3QuickStep): android.permission.FORCE_STOP_PACKAGES}
 

我们知道launcher3的权限都定义在/frameworks/base/data/etc/com.android.launcher3.xml，

然后去frameworks/base/data/etc/Android.bp下面看看这个xml文件编译到哪里

prebuilt_etc {name: "privapp_whitelist_com.android.launcher3",
    system_ext_specific: true,sub_dir: "permissions",src: "com.android.launcher3.xml",filename_from_src: true,
}

system_ext_specific: true,------说明编译到system/system_ext/etc/permissions/

然后我们就去手机的这个下面去找，

adb shell

cd system/system_ext/etc/permissions/

cat com.android.launcher3.xml

<permissions>
    <privapp-permissions package="com.android.launcher3">
        <permission name="android.permission.BIND_APPWIDGET"/>
        <permission name="android.permission.CONTROL_REMOTE_APP_TRANSITION_ANIMATIONS"/>
        <permission name="android.permission.GET_ACCOUNTS_PRIVILEGED"/>
        <permission name="android.permission.WRITE_SECURE_SETTINGS"/>
        <permission name="android.permission.BROADCAST_CLOSE_SYSTEM_DIALOGS"/>
        <permission name="android.permission.START_TASKS_FROM_RECENTS"/>
        <permission name="android.permission.STATUS_BAR"/>
        <permission name="android.permission.STOP_APP_SWITCHES"/>
    </privapp-permissions>
</permissions>

发现果然没有        <permission name="android.permission.FORCE_STOP_PACKAGES"/>

然后把这个文件pull出来，

adb pull system/system_ext/etc/permissions/com.android.launcher3.xml .

然后加上上面缺的那个权限，再push回去。

adb push com.android.launcher3.xml system/system_ext/etc/permissions/com.android.launcher3.xml

然后重新启动。