Question

I have 2 Activities, each in seperate applications. Activity1 has a button the user can click and it calls the second activity using an intent in its onClick() method:

Intent myIntent = getPackageManager().getLaunchIntentForPackage(com.myProject.Activity2);
startActivityForResult(myIntent, 600);

This correctly launches Activity2 from Activity1, but onActivityResult gets called in Activity1 before onCreate gets called in Activity2, instead of in onBackPressed() where I set up the return intent.

Here is the onCreate method for Activity2:

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

Here is the current version of onBackPressed method for Activity2:

@Override
public void onBackPressed() {
    Intent intent = new Intent();
    intent.putExtra("Stuff", someStuff);

    if(getParent()==null){
        setResult(Activity.RESULT_OK, intent);
    }else{
        getParent().setResult(Activity.RESULT_OK, intent);
    }
    finish();
    super.onBackPressed();
}

My AndroidManifest.xml has the following intent filter for Activity2:

<intent-filter>
    <action android:name="android.intent.action.MAIN"/>
    <category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>

I verified that my launchMode is standard (and not singleTask, etc) as advised here and my request code is not negative as warned here. I also tried android:launchMode="singleTop", but that was a no-go also.

I also tried not calling finish() in onBackPressed() for Activity2 as mentioned here (also with just super.onBackPressed() as suggested here) and again calling it as suggested here.

Additionally I tried commenting out the line intent.putExtra("Stuff", someStuff); as it seemed to cause trouble for this person.

Any ideas as to what I might be doing wrong?

Answer 1

So here is the final solution that took care of it:

I changed the intent for Activity1 to the following:

Intent myIntent = new Intent();
myIntent.setClassName("com.myProject", "com.myProject.Activity2");
startActivityForResult(myIntent, 600);

For some reason Android requires the fully qualified name for the second parameter in addition to the package name given by the first parameter. Now it works! 🙂