Thank you for your reply.
the relative_view.xml file is shown below:
<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10px">
<TextView id="@+id/label"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Type here:"/>
<EditText id="@+id/entry"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@android:drawable/
editbox_background"
android:layout_below="@id/label"/>
<Button id="@+id/ok"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/entry"
android:layout_alignParentRight="true"
android:layout_marginLeft="10px"
android:text="OK" />
<Button android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toLeft="@id/ok"
android:layout_alignTop="@id/ok"
android:text="Cancel" />
</RelativeLayout>
I REALLY have the id -- entry. I wonder if there is other problem?
What is timestamp of this xml file? How does it work with the app?
On 5月6日, 上午10时04分, Mark Murphy <[EMAIL PROTECTED]> wrote:
> 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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