Mark,
That was it,
i called findViewById() before calling setContentView() , thank you so much.
Toby
On Sat, Aug 22, 2009 at 11:02 AM, Mark Murphy <mmur...@commonsware.com>wrote:
>
> Tobias Eisentraeger wrote:
> > Hello Mark,
> >
> > thanks for looking into that with me.
> >
> > The problem is the Button Object which does not
> > get instantiated correctly, i guess this is what null is. i can let it
> > crash now like this:
> >
> > theButtonBtn = (Button) findViewById(R.id.ButtonTheButton);
> > Log.d("EditYourSettings","Before accessing ID");
> > Log.d("EditYourSettings",""+theButtonBtn .getId()); // it crashed here
> > - first access to the Button Object.
> >
> > Is there anything I do wrong getting the Button?
>
> Most likely, either:
>
> 1. Your layout XML file does not contain a widget with
> android:id="@+id/ButtonTheButton", or
>
> 2. You are calling findViewById() before calling setContentView() on the
> activity
>
> > How do you actually debug an android app with eclipse? Can you step
> > through the code and check if a variable is null? Like on a normal java
> > app? When i click on debug and set a breakpoint, it never stops. It just
> > installs it on the device.
>
> I don't use Eclipse, but you can debug with it, AFAIK. Unfortunately,
> there is little documentation for it on the Android developer site.
>
> --
> Mark Murphy (a Commons Guy)
> http://commonsware.com | http://twitter.com/commonsguy
>
> _Android Programming Tutorials_ Version 1.0 In Print!
>
> >
>
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