Doughy wrote:
> I am trying to create a very simple program that will change the text
> of a label object when I click a button. I have created the button
> and the label using the XML file, but now I have no idea how I can
> write the callback when the user presses the button.
There are hundreds of sample activities that came with your SDK, in the
samples/ directory, and a few dozen have buttons. If you look at one of
them (such as Visibility1.java), you will find statements like:
visibleButton.setOnClickListener(mVisibleListener);
where visibleButton is a Button and mVisibleListener is:
OnClickListener mVisibleListener = new OnClickListener() {
public void onClick(View v) {
mVictim.setVisibility(View.VISIBLE);
}
};
The general Android rule of thumb is that event processing is either
handled by a listener (e.g., OnClickListener) or via callback methods
you can override in a subclass (e.g., onCreate() in an Activity).
--
Mark Murphy (a Commons Guy)
http://commonsware.com
Android Training on the Ranch! -- Mar 16-20, 2009
http://www.bignerdranch.com/schedule.shtml
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