Pass Data To Activity from inside Fragment

Question

How do I pass data from a Fragment to its parent Activity?

My Fragment Code and Activity Code:

Duplicate of: http://stackoverflow.com/questions/9343241/passing-data-between-a-fragment-and-its-container-activity — Manish Kumar Sharma, May 14 '17 at 17:00
Possible duplicate of [Passing data between a fragment and its container activity](http://stackoverflow.com/questions/9343241/passing-data-between-a-fragment-and-its-container-activity) — Phantômaxx, May 14 '17 at 19:18

score 1 · Answer 1 · answered May 14 '17 at 17:16

Try using interfaces.

Any fragment that should pass data back to its containing activity should declare an interface to handle and pass the data. Then make sure your containing activity implements those interfaces. For example:

In your fragment, declare the interface...

public interface OnDataPass {
    public void onDataPass(String data);
}

Then, connect the containing class' implementation of the interface to the fragment in the onAttach method, like so:

OnDataPass dataPasser;

@Override
public void onAttach(Activity a) {
    super.onAttach(a);
    dataPasser = (OnDataPass) a;
}

Within your fragment, when you need to handle the passing of data, just call it on the dataPasser object:

public void passData(String data) {
    dataPasser.onDataPass(data);
}

Finally, in your containing activity which implements OnDataPass...

@Override
public void onDataPass(String data) {
    Log.d("LOG","hello " + data);
}

This answer was provided by @HarloHolmes.

Pass Data To Activity from inside Fragment

1 Answers1