CODEWITHSUNDEEP
androidandroid-listview
user762726
user762726

Reputation:

Constructing Dynamic List View In Android

Iam trying to create a list view dynamically, Please provide me an example for list view in android...

Upvotes: 0

Views: 7637

Answers (4)

Nilesh Tupe
Nilesh Tupe

Reputation: 7803

You can create your own List View by extending Base adapter class

public class ListAdapterDroidman extends BaseAdapter{
private ArrayList<ListitemDroidman> list = new ArrayList<ListitemDroidman>();
@SuppressWarnings("unused")
private Context context;

public ListAdapterDroidman(Context context) {
    this.context = context;
}

public void addItem(ListitemDroidman item) {
    list.add(item);


}
public void addItem(ListitemDroidman item,int pos)
{

   list.add(pos, item);

}
public void removeItem(int pos)
{
   list.remove(pos);


}


public void clearList()
{ 
   list.clear();    

}



public int getCount() {
    // TODO Auto-generated method stub
    return list.size();
}

public Object getItem(int position) {
    // TODO Auto-generated method stub
    return list.get(position);
}

public long getItemId(int position) {
    // TODO Auto-generated method stub
    return position;
}

public View getView(int position, View convertView, ViewGroup parent) {
    // TODO Auto-generated method stub
    return list.get(position);
}

}

Then create your own layout

public class ListitemDroidman extends LinearLayout {
TextView filename;
ImageView iv;
public ListitemDroidman(Context context) {
    super(context);

}

public void setInfo(Context context, Bitmap icon, String fname,int colorId) {
    iv=new ImageView(context);
    iv.setImageBitmap(icon);

    iv.setPadding(0, 0, 20, 0);
    addView(iv);
    filename = new TextView(context);

    filename.setTextSize(20);
    filename.setTextColor(getResources().getColor(colorId));
    filename.setText(fname);
    addView(filename);      
}
}

Now create listitems in your activityClass create object of the adapter that u have created

myListitem = new ListitemDroidman(this);
icon = BitmapFactory.decodeResource(getResources(),
                    R.drawable.folder_icon);
myListitem.setInfo(getApplicationContext(), icon, filelist[i],
                    R.color.color_white);

add the listitem to the adaper as in normal list

la_file.addItem(myListitem);

Upvotes: 1

BFil
BFil

Reputation: 13106

Why don't you just take a look at the ApiDemos of your android SDK..

You can find 14 examples of ListActivities implementations..

Or just search here or on Google, you can find lots of examples

Then if you want to achieve something in particular you can ask a more specific question here, does it sound fair?

Upvotes: 0

Tek Yin
Tek Yin

Reputation: 3050

Try this tutorial to understand how to use ListView. http://developer.android.com/resources/tutorials/views/hello-listview.html

Upvotes: 0

Krishna
Krishna

Reputation: 1474

Activity class......

public class UsersListActivity extends ListActivity{

    RegisterUser registerUser;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);


        String[] statesList = getListOfAllUsers();
        Toast.makeText(getApplicationContext(),
                "States Array lentgh is : " + statesList.length,
                Toast.LENGTH_LONG).show();
        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();
 }
        });

    }}

and create an xml file named list_item.xml and paste the below code.

<?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>

Upvotes: 2

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