tagore wrote:
> Today, I write some simple code to implement activity. See the
> following codes:
> public class TestLinearView extends Activity {
> private EditText edit = null;
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle icicle) {
> super.onCreate(icicle);
>
> // Set activity content from layout view
> setContentView(R.layout.relative_view);
>
> // change the edit text
> edit = (EditText)findViewById(R.id.entry);
> edit.setText("Mysdfsadfdsafdsf");
> }
> }
>
> However, the application crushed. After I debug into the app, I found
> that the edit was null.
It would appear that your res/layout/relative_view.xml file does not
have a view with the id of "@+id/entry". I would have expected a
compiler error, though, complaining that R.id.entry was not found.
Perhaps your R.java file is out of sync with the contents of your res/
directory tree.
Try updating the timestamp on your res/layout/relative_view.xml file
(e.g., touch res/layout/relative_view.xml in Linux) and recompile. Or,
update res/layout/relative_view.xml to include an EditText element with
an android:id of "@+id/entry", since it would appear it doesn't have one
already.
--
Mark Murphy (a Commons Guy)
http://commonsware.com
The Busy Coder's Guide to Android Development -- coming in June 2008!
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