title: How to find an issue in android application using debug tools?
body: <p>My android application crashed with the following stack. How to find the real issue and fix it?
  What if in debug perspective after application crashes is automatically opens window "Source not found" and button "Edit Source Lookup Path...". How to inspect which line causing  problem?</p>
  
  <pre><code>Thread [&lt;1&gt; main] (Suspended (exception RuntimeException))  
      ActivityThread.performLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1879    
      ActivityThread.handleLaunchActivity(ActivityThread$ActivityClientRecord, Intent) line: 1980 
      ActivityThread.access$600(ActivityThread, ActivityThread$ActivityClientRecord, Intent) line: 122    
      ActivityThread$H.handleMessage(Message) line: 1146  
      ActivityThread$H(Handler).dispatchMessage(Message) line: 99 
      Looper.loop() line: 137 
      ActivityThread.main(String[]) line: 4340    
      Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]  
      Method.invoke(Object, Object...) line: 511  
      ZygoteInit$MethodAndArgsCaller.run() line: 784  
      ZygoteInit.main(String[]) line: 551 
      NativeStart.main(String[]) line: not available [native method]  
  </code></pre>
  
  <p>LogCat shows following errors:</p>
  
  <pre><code>12-07 20:10:52.803: W/dalvikvm(831): Unable to resolve superclass of Lcom/appspot/Gmaps_over_netActivity; (27)
  12-07 20:10:52.803: W/dalvikvm(831): Link of class 'Lcom/appspot/Gmaps_over_netActivity;' failed
  12-07 20:10:58.118: W/ActivityManager(87): Launch timeout has expired, giving up wake lock!
  12-07 20:10:58.955: W/ActivityManager(87): Activity idle timeout for ActivityRecord{410f8a38 com.appspot/.Gmaps_over_netActivity}
  </code></pre>
  
  <p>What seems to be a problem?</p>