Android: Opening Activity with data with TabHost

Question

My app is like this:

Tabhost:

• MapViewActivity
• ListViewActivity -> DetailActivity

In the DetailActivity there's a button to show something in the MapViewActivity. How do i close the DetailView and open the first tab with additional data, without loosing the tab hierarchy .

What i tried:

Intent intent = new Intent(this, TabsActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
intent.putExtra(DATA_KEY, "some-data");
startActivity(intent);

But in the onResume in TabsActivity is wasn't able to retrieve the data from

getIntent();

So another option would be to set a listener and before finishing the Activity, notify the listener. But here the problem is that PutExtra wont take a Class as a value.

I think i'm not on the right track. So what do you suggest?

Answer 1

I ended up using the following:

In the ListViewActivity i use startActivityForResult(); like:

Intent intent = new Intent(activity, DetailActivity.class);
startActivityForResult(intent, REQUEST_CODE);

When i click a button, the DetailActivity sends the data back to ListViewActivity

Intent intent = new Intent();
intent.putExtra(KEY_ID, id);
setResult(RESULT_OK, intent);
finish();

Then i receive the data in ListViewActivity using the onActivityResult():

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if(requestCode == TrackDetailsActivity.REQUEST_CODE){
        String objectId = data.getStringExtra(DetailActivity.KEY_ID);
        if (objectId != null) {
            CustomTabActivity tabs = (CustomTabActivity)getParent();
            tabs.getTabHost().setCurrentTabByTag(MapViewActivity.TAG);
            tabs.setObject(objectId);
        }
    } 

    super.onActivityResult(requestCode, resultCode, data);
}

As you can see i store the result in my CustomTabActivity, later in MapViewActivity use this property.