1：系統(tǒng)預(yù)制App的提權(quán)問題

    final ProcessRecord addAppLocked(ApplicationInfo info, boolean isolated,
            String abiOverride) {
        ProcessRecord app;

        ...

        if ((info.flags & PERSISTENT_MASK) == PERSISTENT_MASK) {
            app.persistent = true;
            app.maxAdj = ProcessList.PERSISTENT_PROC_ADJ;
        }


        return app;
    }

預(yù)制的App只要在manifest中添加一個persistent屬性就可以了。

<application
    android:allowBackup=“true"
    android:icon="@mipmap/ic_launcher”
    android:persistent=“true"
    android:label="@string/app_name”
    android:roundIcon="@mipmap/ic_launcher_round”
    android:supportsRtl=“true"
    android:theme="@style/AppTheme">