【BroadcastReceiver】在运行时管理Manifest Receiver

    /**     * Listing 5-21: Dynamically toggling manifest Receivers      */    ComponentName myReceiverName = new ComponentName(this, MyReceiver.class);    PackageManager pm = getPackageManager();    // Enable a manifest receiver    pm.setComponentEnabledSetting(myReceiverName,      PackageManager.COMPONENT_ENABLED_STATE_ENABLED,       PackageManager.DONT_KILL_APP);    // Disable a manifest receiver    pm.setComponentEnabledSetting(myReceiverName,      PackageManager.COMPONENT_ENABLED_STATE_DISABLED,       PackageManager.DONT_KILL_APP);