Aha, you are indeed correct about registration in the manifest. Is there a reason Google wouldn't want to automatically register any class inheriting Activity in the manifest as an Activity?
As I wrote in my original message, the Activity equivalent to Test will eventually have GUI elements (a Button, for example) whose events will trigger SecondActivity; for now, I want to skip that and just develop SecondActivity. So the behavior you describe is exactly what I'm after (for now). Thanks again! --Ben On Sep 4, 5:52 pm, "Mark Murphy" <[email protected]> wrote: > > I have a skeleton system of Activities that will eventually be filled > > with GUI elements, but for now I just want to work on a particular > > aspect of the project without developing the initial GUI parts first. > > But, when I try to launch an Intent from onResume, I get a > > RuntimeException in ActivityThread.performResumeActivity. What is > > wrong with the following code? > > > public class Test extends Activity { > > @Override > > public void onCreate(Bundle savedInstanceState) { > > super.onCreate(savedInstanceState); > > setContentView(R.layout.main); > > } > > > public void onResume() { > > Intent i = new Intent(this, SecondActivity.class); > > this.startActivity(i); > > } > > > public class SecondActivity extends Activity { > > @Override > > public void onCreate(Bundle savedInstanceState) { > > super.onCreate(savedInstanceState); > > setContentView(R.layout.main); > > } > > } > > } > > What you are doing makes no sense. > > When the Test activity starts up, onResume() is called. At that point, you > start SecondActivity, so the user is presented with SecondActivity right > away. The user back-buttons out of SecondActivity, at which point > onResume() on Test gets called...starting up SecondActivity again. > > Do not call startActivity() in onResume(). Do it based on user input > (menu, button, list item click, etc.). > > Beyond that, look at your stack trace to find out the source of your > exception (use adb logcat, DDMS, or the DDMS perspective in Eclipse to get > the Java stack trace). Perhaps SecondActivity is not registered in your > AndroidManifest.xml file? > > -- > Mark Murphy (a Commons Guy)http://commonsware.com > Android App Developer Books:http://commonsware.com/books.html --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
