How to Return a Result (Startactivityforresult) from a Tabhost Activity

How to return a result (startActivityForResult) from a TabHost Activity?

Oh, god! After spending several hours and downloading the Android sources, I have finally come to a solution.

If you look at the Activity class, you will see, that finish() method only sends back the result if there is a mParent property set to null. Otherwise the result is lost.

public void finish() {
    if (mParent == null) {
        int resultCode;
        Intent resultData;
        synchronized (this) {
            resultCode = mResultCode;
            resultData = mResultData;
        }
        if (Config.LOGV) Log.v(TAG, "Finishing self: token=" + mToken);
        try {
            if (ActivityManagerNative.getDefault()
                .finishActivity(mToken, resultCode, resultData)) {
                mFinished = true;
            }
        } catch (RemoteException e) {
            // Empty
        }
    } else {
        mParent.finishFromChild(this);
    }
}

So my solution is to set result to the parent activity if present, like that:

Intent data = new Intent();
 [...]
if (getParent() == null) {
    setResult(Activity.RESULT_OK, data);
} else {
    getParent().setResult(Activity.RESULT_OK, data);
}
finish();

I hope that will be helpful if someone looks for this problem workaround again.

How to return a result (startActivityForResult) from a Activity to TabHost Activity?

Try using broadcast receivers. You can override onStop() in activity B, broadcast an event from activity B and listen in activity A.

Android Use startActivityForResult from a nested activity in a tab.

Alright, I was able to find a solution to this problem.

First, I created another activity that I started using the basic startActivity() call I called a Result Controller. This does not pass any data back to the tabbed activity which means you don't have to worry about where it's going.

Second, I created a simple static data class which I called DataConnector. The ResultController would get the instance of the DataConnector and insert the Data there

Then, in the original activity(in the tabs) I implemented the onWindowFocusChanged method to determine when the user is back to it. I got the instance of DataConnector and was able to pull the data I needed out of there.

How to manage startActivityForResult on Android

From your FirstActivity, call the SecondActivity using the startActivityForResult() method.

For example:

int LAUNCH_SECOND_ACTIVITY = 1
Intent i = new Intent(this, SecondActivity.class);
startActivityForResult(i, LAUNCH_SECOND_ACTIVITY);

In your SecondActivity, set the data which you want to return back to FirstActivity. If you don't want to return back, don't set any.

For example: In SecondActivity if you want to send back data:

Intent returnIntent = new Intent();
returnIntent.putExtra("result",result);
setResult(Activity.RESULT_OK,returnIntent);
finish();

If you don't want to return data:

Intent returnIntent = new Intent();
setResult(Activity.RESULT_CANCELED, returnIntent);
finish();

Now in your FirstActivity class, write the following code for the onActivityResult() method.

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == LAUNCH_SECOND_ACTIVITY) {
        if(resultCode == Activity.RESULT_OK){
            String result=data.getStringExtra("result");
        }
        if (resultCode == Activity.RESULT_CANCELED) {
            // Write your code if there's no result
        }
    }
} //onActivityResult

To implement passing data between two activities in a much better way in Kotlin, please go through 'A better way to pass data between Activities'.

How to get activity result from an Activity in a TabHost?

Again there's no answer to my question. So i have to solve it myself. My solution is ugly but worked. As somebody can guess, we can write a singleton class to store these data. ActivityB will write data and ActivityA will read it. Very easy.

In contrast, i searched in this site, and found some simple solution. Like here

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