Create ListView programmatically

Question

Hi I am new in Android. Could anyone tell me pls whats the wrong with the following code:

public class ListApp extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        TextView lText = new TextView(this);
        lText.setId(0);       

        ListView lView = new ListView(this);
        String[] lStr = new String[]{"AA","BB", "CC"};
        ArrayAdapter lAdap = new ArrayAdapter(this,lText.getId(),lStr);
        lView.setAdapter(lAdap);
        lView.setFocusableInTouchMode(true);        

        setContentView(lView);
    }
}

for one thing, you're using the ArrayAdapter constructor incorrectly. you want to use the two parameter version: (Context context, int textViewResourceId) — moonlightcheese
– moonlightcheese, Commented May 27, 2011 at 19:35
like this: ArrayAdapter<String> lAdap = new ArrayAdapter<String>(this, lText.getId()); — moonlightcheese
– moonlightcheese, Commented May 27, 2011 at 19:38

moonlightcheese · Accepted Answer · 2011-06-03 19:21:47Z

23

here's a solution that does not require you to write any xml layouts. it uses standard android layouts where possible and no inflation is necessary:

Dialog dialog = new Dialog(this);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setTitle("Select Color Mode");

ListView modeList = new ListView(this);
String[] stringArray = new String[] { "Bright Mode", "Normal Mode" };
ArrayAdapter<String> modeAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, android.R.id.text1, stringArray);
modeList.setAdapter(modeAdapter);

builder.setView(modeList);
dialog = builder.create();

edited Jun 3, 2011 at 19:21

answered May 27, 2011 at 20:05

moonlightcheese

10.7k9 gold badges51 silver badges81 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

moonlightcheese Over a year ago

ignore the dialog stuff. you can adapt this to work with a ListActivity as well.

Wayne Tun Over a year ago

I copied your code exactly but no listview is generated.

Wayne Tun Over a year ago

sorry i got it now, your code is missing dialog.show();

Krishna · Accepted Answer · 2011-05-20 11:56:39Z

Try this..

Paste the following code in list_item.xml.

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"  
    android:layout_height="fill_parent"
    android:padding="10dp" 
    android:textSize="16sp" android:textColor="#ffffff" android:textStyle="bold" android:background="@drawable/border_cell">
</TextView>

Here is the activity class....

    public class UsersListActivity extends ListActivity{    
        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);         
            String[] statesList = {"listItem 1", "listItem 2", "listItem 3"};
            setListAdapter(new ArrayAdapter<String>(this, R.layout.list_item,
                    statesList)); 
            ListView lv = getListView(); 

            lv.setOnItemClickListener(new OnItemClickListener() {
                public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {


                     Toast.makeText(getApplicationContext(),
                     "You selected : "+((TextView) view).getText(), Toast.LENGTH_SHORT).show();
     }
            });

        }

}

kzotin · Accepted Answer · 2011-05-20 11:56:44Z

1

Best practice is to separate view (xml layout) and controller (Activity).

If you dont want this, try to put

 setContentView(lView);

at the beginning of onCreate

answered May 20, 2011 at 11:56

kzotin

5,3553 gold badges32 silver badges36 bronze badges

Comments

Kevin Bradshaw · Accepted Answer · 2010-09-15 14:22:04Z

0

public class ListApp extends ListActivity

answered Sep 15, 2010 at 14:22

Kevin Bradshaw

6,49713 gold badges58 silver badges79 bronze badges

2 Comments

Nick Over a year ago

Could I add ListView form Activity. I don't want to inherit from ListActiviy. Is it possible?

sradforth Over a year ago

I have the same issue, porting a project from iPhone and Blackberry and using Android's XML is a redesign... argh. If it's easy to procedurally create these things it would make life soooo much easier and looks like it should be possible but hey I'm still new to Android :)

Nathan Schwermann · Accepted Answer · 2010-09-15 14:48:24Z

0

Make a layout XML file with your listview and use findViewById to set it's adapter after first setting the content view to your layout

answered Sep 15, 2010 at 14:48

Nathan Schwermann

31.5k16 gold badges83 silver badges91 bronze badges

Collectives™ on Stack Overflow

Create ListView programmatically

5 Answers 5

3 Comments

Comments

Comments

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

5 Answers 5

3 Comments

Comments

Comments

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related