I changed the code to read
if (c != null) { .....
int MyNameColumn = c.getColumnIndexOrThrow("drawingName");
c.moveToFirst();
}
Im catching the exception which is java.lang.NullPointerException.
I don't understand why tho. There is data in the array, i see it get filled
when i step through the code. any thoughts on what is going on ?
Thanks!
On Tue, Jan 13, 2009 at 7:22 AM, android_soft <[email protected]> wrote:
>
> int MyNameColumn = c.getColumnIndexOrThrow("drawingName");
> c.moveToFirst();
> if (c != null) { .....}
>
> 1. You are checking for null after using it above twice which is
> redundant......
> 2. Catch the exception
> 3. If catching and you are getting a NullPointer then use Lod.e(TAG,
> exception.getMessage() + ""); // nullpointers, leaving out the "" will
> break the code.
>
> Hope this helps,
> Chander
>
>
>
>
>
>
>
> On Jan 13, 11:57 am, Josh <[email protected]> wrote:
> > This is still eluding me. here is the log.
> >
> > 01-12 22:53:58.836: DEBUG/AndroidRuntime(446): Shutting down VM
> > 01-12 22:53:58.836: WARN/dalvikvm(446): threadid=3: thread exiting
> > with uncaught exception (group=0x40010e28)
> > 01-12 22:53:58.912: ERROR/AndroidRuntime(446): Uncaught handler:
> > thread main exiting due to uncaught exception
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446):
> > java.lang.NullPointerException: println needs a message
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.util.Log.println(Native Method)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.util.Log.e(Log.java:208)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > com.joshuadobbs.peglites.PegLites.getDrawingsFromDataBase
> > (PegLites.java:242)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > com.joshuadobbs.peglites.PegLites.showSaveOpenDialog(PegLites.java:
> > 1284)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > com.joshuadobbs.peglites.PegLites.access$3(PegLites.java:1279)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > com.joshuadobbs.peglites.PegLites$4.onClick(PegLites.java:1338)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.View.performClick(View.java:2109)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.View.onTouchEvent(View.java:3523)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.widget.TextView.onTouchEvent(TextView.java:4410)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.View.dispatchTouchEvent(View.java:3178)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:857)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:857)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:857)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:857)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:857)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:857)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:857)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > com.android.internal.policy.impl.PhoneWindow
> > $DecorView.superDispatchTouchEvent(PhoneWindow.java:1561)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent
> > (PhoneWindow.java:1085)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.app.Dialog.dispatchTouchEvent(Dialog.java:569)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > com.android.internal.policy.impl.PhoneWindow
> > $DecorView.dispatchTouchEvent(PhoneWindow.java:1545)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.view.ViewRoot.handleMessage(ViewRoot.java:1140)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.os.Handler.dispatchMessage(Handler.java:88)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.os.Looper.loop(Looper.java:123)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > android.app.ActivityThread.main(ActivityThread.java:3742)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > java.lang.reflect.Method.invokeNative(Native Method)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > java.lang.reflect.Method.invoke(Method.java:515)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run
> > (ZygoteInit.java:739)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:497)
> > 01-12 22:53:59.221: ERROR/AndroidRuntime(446): at
> > dalvik.system.NativeStart.main(Native Method)
> > 01-12 22:53:59.432: INFO/Process(51): Sending signal. PID: 446 SIG: 3
> > 01-12 22:53:59.562: INFO/dalvikvm(446): threadid=7: reacting to signal
> > 3
> > 01-12 22:53:59.612: INFO/dalvikvm(446): Wrote stack trace to '/data/
> > anr/traces.txt'
> >
> > Thanks in advance.
> >
> > On Jan 11, 8:46 pm, Josh <[email protected]> wrote:
> >
> > > I am querying the database and adding the results to a list.
> > > everything works fine until i set the adapter (setAdapter) on
> myspinnercontrol. I get the error "the application has stopped
> > > unexpectadely". can anyone tell me what Im doing wrong?
> >
> > > List<String> results = new ArrayList<String>();
> >
> > > Cursor c = myDB.rawQuery("SELECT PKDrawingID,
> drawingName FROM " +
> > > MY_DATABASE_TABLE,null);
> > > /* Get the column index */
> > > int MyNameColumn =
> c.getColumnIndexOrThrow("drawingName");
> >
> > > c.moveToFirst();
> > > if (c != null) {
> > > /* See if we got any results */
> > > if (c.isFirst()) {
> > > int i = 0;
> > > do {
> > > i++;
> > > String drawingName =
> c.getString(MyNameColumn);
> > > results.add(drawingName);
> > > } while(c.moveToNext());
> > > }
> > > }
> > > Spinnerspinner_drawings = (Spinner) findViewById
> > > (com.test.test3.R.id.spinner_drawings);
> > > ArrayAdapter<CharSequence> adapter = newArrayAdapter(this,
> > > android.R.layout.simple_spinner_item, results);
> > > adapter.setDropDownViewResource
> > > (android.R.layout.simple_spinner_dropdown_item);
> > > spinner_drawings.setAdapter(adapter);//this is where it
> > > bombs out and i have to close the application
> >
>
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