Jason, thanks a lot, it turns out the context is null... See if you can help me...
An Alarm starts a "WakefulIntentService"( made by me, which is used to keep a wakelock). That extends an "IntentService" (made by android). This WakefulIntentService then writes data, passing itself as an argument for the context. I'm guessing IntentServices don't count as a "Context", even though Intents and Services do count. Any idea how I can get a context by using a static method, or at least get the right FileOutputStream (for the current application)? I appreciate your help a lot, Brandon Nalls On Aug 11, 4:54 pm, Jason Proctor <[email protected]> wrote: > ok so if that's throwing a null pointer, then context might be null. > check that? > > > > >I commented out a lot of code above what I pasted.... if comments > >count as lines, line 39 is "FileOutputStream fOut = > >context.openFileOutput(filename, Context.MODE_PRIVATE);" > > >Never heard of a finally block... it sounds like it isn't getting > >called, i'll look into adding this. > > >I'm positive filename & contents aren't null. > > >On Aug 11, 4:44 pm, Jason Proctor <[email protected]> > >wrote: > >> what is line 39 in your source file? > > >> are the filename and contents non-null? > > >> btw, i'd recommend closing the output stream writer in a finally > >> block. finalizers aren't guaranteed to get called. > > >> >I have two methods, one reads files and one writes the given string to > >> >a file. > >> >For some reason, the first time the write method works fine, but after > >> >it writes the first file, any files after that makes it throw a > >> >nullpointerexception. No idea why. The problem is in the writeData > >> >method for sure.... why is it throwing null??? > > >> >Stack dump: > >> >08-10 23:04:43.309: WARN/dalvikvm(687): threadid=17: thread exiting > >> >with uncaught exception (group=0x4000fe70) > >> >08-10 23:04:43.319: ERROR/AndroidRuntime(687): Uncaught handler: > >> >thread IntentService[TheDaemon] exiting due to uncaught exception > >> >08-10 23:04:43.357: ERROR/AndroidRuntime(687): > >> >java.lang.NullPointerException > >> >08-10 23:04:43.357: ERROR/AndroidRuntime(687): at > >> >org.myApp.ThePreferences.writeData(ThePreferences.java:39) > >> >08-10 23:04:43.357: ERROR/AndroidRuntime(687): at > >> >org.myApp.ThePhone.savePhoneToDisk(ThePhone.java:33) > >> >08-10 23:04:43.357: ERROR/AndroidRuntime(687): at > >> >org.myApp.ThePhone.refreshStatus(ThePhone.java:82) > >> >08-10 23:04:43.357: ERROR/AndroidRuntime(687): at > >> >org.myApp.TheDaemon.onHandleIntent(TheDaemon.java:62) > >> >08-10 23:04:43.357: ERROR/AndroidRuntime(687): at > >> >android.app.IntentService$ServiceHandler.handleMessage > >> >(IntentService.java:29) > >> >08-10 23:04:43.357: ERROR/AndroidRuntime(687): at > >> >android.os.Handler.dispatchMessage(Handler.java:99) > >> >08-10 23:04:43.357: ERROR/AndroidRuntime(687): at > >> >android.os.Looper.loop(Looper.java:123) > >> >08-10 23:04:43.357: ERROR/AndroidRuntime(687): at > >> >android.os.HandlerThread.run(HandlerThread.java:60) > > >> >write Method > > >> >public boolean writeData(String filename, String contents) > >> > { > >> > try { > >> > FileOutputStream fOut = > >> >context.openFileOutput(filename, > >> >Context.MODE_PRIVATE); > >> > OutputStreamWriter osw = new > >> OutputStreamWriter(fOut); > >> > osw.write(contents); > >> > osw.flush(); > >> > osw.close(); > >> > } catch (IOException e) { > >> > e.printStackTrace(); > >> > Log.e("fmi", "fmi throws ioexception in WRITER"); > >> > return false; > >> > } catch (java.lang.NullPointerException e) { > >> > e.printStackTrace(); > >> > } > >> > return true; > >> > } > > >> >Any idea why it's throwing a null pointer exception? > > >> -- > >> jason.software.particle > > -- > jason.software.particle --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
