ComponentName receiver = new ComponentName(MainActivity.this,
BootReceiver.class);
PackageManager pm = MainActivity.this.getPackageManager();
pm.setComponentEnabledSetting(receiver,
PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
PackageManager.DONT_KILL_APP);
状态有三个
不可用状态:COMPONENT_ENABLED_STATE_DISABLED
可用状态:COMPONENT_ENABLED_STATE_ENABLED
默认状态:COMPONENT_ENABLED_STATE_DEFAULT