Question

I am displaying a listView on my ListViewActivity. And I would like to add a button to the top of the LisView. I have tried this:

    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //....
    setContentView(R.layout.listview_singlegrey);
    LinearLayout linear = (LinearLayout) findViewById(R.id.list_comment);
    Button btAddComment = new Button(this);
    btAddComment.setText("Añadir comentario");
    linear.addView(btAddComment);
    setContentView(linear); 
    //....      
}

The file listview_singlegrey.xml is as follows:

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="fill_parent"
        android:layout_height="fill_parent" android:id="@+id/list_comment"
        android:paddingLeft="10dp" android:paddingRight="10dp" android:background="@drawable/fondomain">    
    <ListView android:id="@+id/android:list" android:listSelector="@android:color/transparent"
          android:layout_width="wrap_content" android:layout_height="wrap_content"
          android:divider="@layout/linedivider" android:dividerHeight="10px"
          android:cacheColorHint="#0000" android:paddingTop="10dp"           
          />
</LinearLayout>

But I cant see the button. Any ideas why?

Answer 1

If you want to add button to the top of your listview, you must add that to zero’th index

linear.addView(btAddComment, 0);

Now your listview is in index 1.