Passing data from one app to another app using onActivityResult

Question

I'm trying to pass data from one app to another app using onActivityResult. Passing Data from 'A' to 'B' is OK. But when I try to return a string from B to A, data.getExtras() always returns null ... Thanks in advance

My code:

In App A:

public void initAppB(Context context, String packageName, String codCli){
    Intent intent = context.getPackageManager().getLaunchIntentForPackage(packageName);
    if (intent == null) {
        intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(Uri.parse("market://details?id=" + packageName));
    }
    intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    intent.putExtra("codCli",codCli);
    startActivityForResult(intent, 123456);
}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    String reg = "";
    if(requestCode == 123456) {
      if(resultCode == -1) {
        try{
            Bundle MBuddle = data.getExtras(); // >> ALWAYS RETURN NULL <<
            reg = MBuddle.getString("retorno");
        }catch(Exception e){
            log("Error: " + e.getMessage());
        }
        CommitSale(reg);
      } else {
        // error
      }
    }
}

In App B:

....
//It's OK!! Receiving data!
Bundle extras = getIntent().getExtras();
if (extras != null) {
    codCli = extras.getString("codCli");
}

....

OnClickListener mBackListener = new OnClickListener() {
    public void onClick(View v) {
        String registro = "010000";
        Intent intent = getIntent();
        intent.putExtra("retorno",registro);
        setResult(-1, intent); // --> Forcing returning code -1 (Ok)
        finish();
    }
};

Answer 1

try this: in B:

Intent intent = getIntent();
intent.putExtra("Date",dateSelected);
setResult(RESULT_OK, intent);
finish();

And, in A:

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if(resultCode==RESULT_OK && requestCode==1) {
        Bundle mBundle = data.getExtras();
        String mMessage = mBundle.getString("Date");
    }
}