1.1 ActivityManager::forceStopPackage
/**
* Have the system perform a force stop of everything associated with
* the given application package. All processes that share its uid // 同UID
* will be killed, all services it has running stopped, all activities // service activity
* removed, etc. In addition, a {@link Intent#ACTION_PACKAGE_RESTARTED} //ACTION_PACKAGE_RESTARTED广播
* broadcast will be sent, so that any of its registered alarms can // alarm notifications
* be stopped, notifications removed, etc.
*
*
You must hold the permission
* {@link android.Manifest.permission#FORCE_STOP_PACKAGES} to be able to
* call this method.
*
* @param packageName The name of the package to be stopped.
* @param userId The user for which the running package is to be stopped.
*
* @hide This is not available to third party applications due to
* it allowing them to break other applications by stopping their
* services, removing their alarms, etc.
*/
public void forceStopPackageAsUser(String packageName, int userId) {
try {
ActivityManagerNative.getDefault().forceStopPackage(packageName, userId);
} catch (RemoteException e) {
throw e.rethrowFromSystemServer();
}
}
调用此方法，(FORCE_STOP_PACKAGES权限需要系统签名)
系统会强制停止与指定包关联的所有事情，
将会杀死使用同一个uid的所有进程，停止所有服务，移除所有activity；
所有注册的定时器和通知也会移除；
还可以达到禁止开机自启动和后台自启动的目的；
1.2 PackageManagerService::setPackageStoppedState 设置包停止状态
/**
* Set whether the given package should be considered stopped, making
* it not visib