class has no zero argument constructor

inner Broadcast receiver must be static ( to be registered through Manifest)

Or

Non-static
broadcast receiver must be registered and unregistered inside the Parent class

广播接收器作为内部类：

要么声明为静态类，然后通过Manifest注册；

要么不作为静态类，但是需要在父对象中动态注册和注销。