Just update ADT and Unable to resolve superclass errer appear

Question

The error show after I update my ADT, the project is created before the update.

In Login Activity,

public class LoginActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

            // Do something here... if login success, Start another activity
        Intent i = new Intent(LoginActivity.this, MainActivity.class);
        LoginActivity.this.startActivity(i);
    }
.......
}

In MainActivity,

public class MainActivity extends FragmentActivity {
  protected void onCreate(Bundle savedInstanceState) {
    //......
  }
}

I try to remove all the code inside and back to a blank activity. The error is not happen because of the code inside the activity. I think is abut the extend FragmentActivity

Here is the error trace:

Unable to resolve superclass of Lhk/iactive/imoodle/activity/MainActivity; (15)
Link of class 'Lhk/iactive/imoodle/activity/MainActivity;' failed

I get this error after I update my ADT. I do some research on this topic. I try to import the android-support-v4.jar again and this do not fix the problem. I also read some blog like THIS ONE can not help me too :(

try this if it helps http://stackoverflow.com/questions/16636039/java-lang-classnotfoundexception-after-changing-nothing-in-the-project-but-upgra/16636127#16636127 — Raghunandan, May 23 '13 at 06:46
I cant found my private library, But my android-support-v4.jar is store in Referenced Library. I check it in the setting and do not work too. Btw thank for you reply :d — Jeff Lee, May 23 '13 at 06:51
I cant not solve the problem even I copy all the file in side the project to a new project that I have just created :( — Jeff Lee, May 23 '13 at 07:01

score 0 · Answer 1 · answered May 23 '13 at 07:14

I have solve the problem by myself. I am going to share the solution hope there is other people who suffer from the same error can save some time :D

I try many method for example go to build Path Config -> Order and Exprot, All the library is already checked. And the NoClassPathFound error is still showing. I have no external Jar for the project and The error is from FragmentActivity from Android Support Library.

Then I delete the android-support-v4.jar complete and add it again by right clicked the project -> Android Tools -> Add support library...

After the new support library added. All the error fix. :D

score 0 · Answer 2 · answered Jul 23 '13 at 10:33

0

This worked for me:

For all projects (app and library):

Right click the project, and choose Properties
Go to Java Build Path-Order and Export.
Tick 'Android Private Libraries'

answered Jul 23 '13 at 10:33

vida

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Just update ADT and Unable to resolve superclass errer appear

2 Answers2