Question

I have one Activity in which I try to show some simple messages, and then a list of items. So as I understand, I need two views: one for the simple layout, and one for the list of items which will be handled by the adapter.

Here is my code:

ArrayAdapter<SolutionTopic> adapter;        

ArrayList<SolutionTopic> problems = new ArrayList <SolutionTopic>( );   

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);

// Load your layout
setContentView(R.layout.solution);

SolutionTopic s = new SolutionTopic ();
s.setSolutionTopicName( "Hello" );

problems.add(s);        

adapter = new ArrayAdapter<SolutionTopic>(this, R.layout.solution_topic_list, 
        R.id.label,  problems);

TextView solution_title  = (TextView) findViewById(R.id.solution_title);        
TextView solution_description = (TextView) findViewById(R.id.solution_description);

setListAdapter (adapter);

}

and here is the solution.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content" >

<TextView
    android:id="@+id/solution_title"    
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Label1"
    />  

<TextView
    android:id="@+id/solution_description"    
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Label2"
    />  

</LinearLayout>

and here is the solution_topic_list.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" >
</TextView>  

What I am not sure is how to get these two to render together. Ideally what I want to do is display the TextView messages first, and then the list of items.

Any idea how I can do that?

Thanks!

Answer 1

You shouldn’t remove the ListView from solution.xml, in that ListView your SolutionTopics will be displayed.

To get the big picture, your interface would have three Views:

-TextView: @+id/solution_title

-TextView: @+id/solution_description

-ListView: @android:id/list

The ListView contains an undefined number of entries of solution_topic_list.xml.

PD: The third parameter of ArrayAdapter (R.id.label) should be the id of the TextView in solution_topic_list.xml:

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/label"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:padding="10dp"
    android:textSize="16sp" >
</TextView>  

You also should implement toString method in your SolutionTopic class, to get the desired String.