First for every row in the list you need create a separate xml file which
describes layout text view for displaying the run-time data.
Also change ArrayAdapter to SimpleCursorAdapter that works well. In this
change R.id.list as R.layout.text.xml i think it will work
lv.setAdapter(new ArrayAdapterString(HelloWorld.this, R.id.list, arr));
For references check ContactsManager Application Android Developers site
under resource tab.
On Fri, Aug 13, 2010 at 1:45 AM, Warrior ranjeetsinghdhi...@gmail.comwrote:
My bad.. there is another text.xml in the layout folder...
?xml version=1.0 encoding=utf-8?
LinearLayout xmlns:android=http://schemas.android.com/apk/res/
android
android:orientation=vertical
android:layout_width=fill_parent
android:layout_height=fill_parent
ListView
android:id=@+id/list
android:layout_width=wrap_content
android:layout_height=wrap_content
/
/LinearLayout
On Aug 12, 3:22 pm, Erik R ejwrobert...@gmail.com wrote:
On the line:
lv = (ListView) findViewById(R.id.list);
You are trying to get a handle on a ListView that does not exist in
the XML that you are showing.
On Aug 12, 1:34 pm, Warrior ranjeetsinghdhi...@gmail.com wrote:
can anyone tell me whats wrong or suggest the best way to populate a
ListView on runtime from one screen to another.
Please see my code below
1. the list always ends up empty
2. I get a invalid resource error in the end.
?xml version=1.0 encoding=utf-8?
LinearLayout xmlns:android=http://schemas.android.com/apk/res/
android
android:orientation=vertical
android:layout_width=fill_parent
android:layout_height=fill_parent
TextView
android:layout_width=fill_parent
android:layout_height=wrap_content android:text=@string/hello /
EditText
android:id=@+id/entry android:layout_width=fill_parent
android:layout_height=wrap_content
android:background=@android:drawable/editbox_background/
Button android:id=@+id/ok
android:layout_width=wrap_content
android:layout_height=wrap_content android:layout_below=@id/
entryandroid:layout_alignParentRight=true
android:layout_marginLeft=10dipandroid:text=Add to List /
Button android:id=@+id/viewlist
android:layout_width=wrap_content
android:layout_height=wrap_content
android:layout_below=@id/ok
android:layout_alignParentRight=true
android:layout_marginLeft=10dip
android:text=View List /
/LinearLayout
public class HelloWorld extends Activity {
/** Called when the activity is first created. */
public ListView lv;
public ArrayListString arr = new ArrayListString();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button okButton = (Button) findViewById(R.id.ok);
okButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
EditText et = (EditText) findViewById(R.id.entry);
arr.add(et.getText().toString());
Toast.makeText(HelloWorld.this, Added: +
et.getText(),
Toast.LENGTH_SHORT).show();
et.bringToFront();
}
});
Button viewListButton = (Button) findViewById(R.id.viewlist);
viewListButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
setContentView(R.layout.text);
lv = (ListView) findViewById(R.id.list);
lv.setAdapter(new
ArrayAdapterString(HelloWorld.this, R.id.list, arr));
}
});
}
}
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