CODEWITHSUNDEEP
javaandroidclasseventsmethods
Stanley Giovany
Stanley Giovany

Reputation: 583

how to call method on a class while an event of object inside it is triggered

i have a code like this, this just an example class with an object of a class with an event listener.

public class MyActivity ..... {

     EditText something;
     AnyFragment frag;

     public MyActivity(){
          frag = new AnyFragment();
     }


     public void setText(String text){
          something.setText(text);
     }

}

public class AnyFragment extends DialogFragment implements AnyListener{

     public void onEvent(String text){
          // How to call method setText in class MyActivity from here ?
     }

}

My problem is: how to call method setText in class MyActivity while event on frag object is triggered?

or there's another approach to do that?

Any answer would be appreciated, thanks!

Upvotes: 2

Views: 496

Answers (1)

Mohammed Aouf Zouag
Mohammed Aouf Zouag

Reputation: 17142

You can do this:

public class MyActivity ..... {

     EditText something;
     AnyFragment frag;

     public MyActivity(){
          frag = new AnyFragment(this);
     }

     public void setText(String text){
          something.setText(text);
     }
}

public class AnyFragment extends DialogFragment implements AnyListener{

     private Context context;

     public AnyFragment(Context context) {
         this.context = context;
     }

     public void onEvent(String text){
         ((MyActivity)context).setText(text);
     }
}

or using an interface:

public class MyActivity ..... {

     EditText something;
     AnyFragment frag;

     public MyActivity(){
         frag = new AnyFragment();
         frag.setFragListener(new AnyFragment.FragListener() {
             @Override
             public void notifyActivity(String text) {
                 setText(text);
             }
         });
     }

     public void setText(String text){
         something.setText(text);
     }
}

public class AnyFragment extends DialogFragment implements AnyListener{

    private FragListener listener;

    public setFragListener(FragListener listener) {
        this.listener = listener;
    }

    public void onEvent(String text){
        if(listener != null)
            listener.notifyActivity(text);
    }

    public interface FragListener {
        void notifyActivity(String text);
    }
}

Upvotes: 2

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