如何将数据从广泛的广播接收者传递到主要活动

Question

I registered a broad cast receiver in a separate file from the main activity, and based on the received notifications in the broad cast receiver, i want to perform some action in the main activity.

my question is, what is the recommended way to pass the notifications from the broad cast receiver to the main activity? should make a public method inside each Action iam registered for in the broad cast receiver file? or should use an interface that will be implemented in the main activity.

note: the broad cast reciever is registered for 7 actions

Answer 1

Create an Interface and let your Main activity Implement it,this helps in Polymorphism Pass in your MainActivity object as the Interface to the BroadcastListener File and call the appropriate methods in the interface based on the actions.( Since you are mentioning to either have public methods i believe you will have the reference to the MainActivity object). Implement it more like the Observer Pattern.

//BroadcastObserver.java
public interface BroadcastObserver {
    //methods methods 
   public void foo();
}

//MainActivity.java
public class MainActivity extends Activity implements BroadcastObserver{
 @Override
 public void foo(){

 }

}

public class MyClass {
  BroadcastObserver static observer;  // this should be set to by passing your MainActivity object, may be at the time when you initiate your MyClass object
  public static class MyBroadcastReceiver extends BroadcastReceiver {

  @Override
  public void onReceive(Context context, Intent intent) {
     Toast.makeText(context, "!!!!.",
     Toast.LENGTH_LONG).show();
     if(someaction){
         observer.foo();
     }
  }


}