Question

Question is simple, I am not exactly new to Android but I cannot, for the life of me, retrieve the extras passed via an intent from Activity A to Activity B.

See Activity A: This is actually a ListFragment, that implements onListItemClick() to start another activity via an intent.

@Override 
public void onListItemClick(ListView l, View v, int position, long id) {
    Log.i("FragmentList", "Item clicked: " + id); 
    Intent i = new Intent(getActivity(), ExpandedTweetView.class);
    twitter4j.Status status = adapter.getItem(position);

    Bundle extras = new Bundle();
    extras.putString(KEY_TEXT, status.getText());
    extras.putString(KEY_HANDLE, status.getUser().getScreenName());
    extras.putString(KEY_NAME, status.getUser().getName());
    extras.putString(KEY_TIMESTAMPS, status.getCreatedAt().toString());
    extras.putLong(KEY_RETWEETS, status.getRetweetCount());

    i.putExtra(KEY_EXTRAS, extras);
    startActivity(i);
}

This part just works, I tested it usng Log.v(TAG, “status.getText()” to make sure that the error was not coming from the Adapter passing an empty item via getItem().

Here is the code on Activity B:

public class ExpandedTweetView extends Activity {

TextView text;
TextView name;
TextView handle;
TextView createdAt;
TextView retweets;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.expanded_list_item);

    Bundle extras = getIntent().getExtras();

    ActionBar actionBar = getActionBar();
    actionBar.setHomeButtonEnabled(true);
    actionBar.setDisplayHomeAsUpEnabled(true);

    text = (TextView) findViewById(R.id.h_content);
    name = (TextView) findViewById(R.id.h_name);
    handle = (TextView) findViewById(R.id.h_handle);
    createdAt = (TextView) findViewById(R.id.h_timestamp);
    retweets = (TextView) findViewById(R.id.h_retweet_count);

    if(extras != null) {
        text.setText(extras.getString(TimelineFragment.KEY_TEXT));
        name.setText(extras.getString(TimelineFragment.KEY_NAME));
        handle.setText(extras.getString(TimelineFragment.KEY_HANDLE));
        createdAt.setText(extras.getString(TimelineFragment.KEY_TIMESTAMPS));
        retweets.setText(String.valueOf(extras.getLong(TimelineFragment.KEY_RETWEETS)));
    }
}

As you can see, I believe I am using the right code to obtain the extras, using the same code on other applications worked. Not sure why, when the ExpandedTweetView is created via an intent, ALL of the textViews are empty. See: https://www.dropbox.com/s/pso6jbyn6rpks9n/empty_activity.png

What is even MORE strange is that I had initially tried checking to see if the bundle was null by calling this:

if (extras == null) {
Log.v(TAG, "Extras are empty :(");
}

But that line was never executed, meaning the bundle is not null. I also thought that maybe the keys being used to retrieve the individual Strings from the bundle were mismatching; however, in order to remedy that I decided to create constants that could be used on both sides. As you can see on the code, both the key to set the Extra and the Key to retrieve the Extra are the same.

Any ideas as to what the heck is going on?

Answer 1

Try adding the extra variable to intent rather than in Bundle
Ex:

 i.putExtra(KEY_1, a);
 i.putExtra(KEY_2, b);
 i.putExtra(KEY_3, c); 

Then retrieve it from other activity from intent
Ex:

  getIntent().getStringExtra(KEY_1) ;