Question

I would like to create a listview with custom rows. I have created a class that extends ListActivity and an XML for each row item. I’ve also added a method that generates some dummy data. But this is where I’m stuck. How do I call this from my main class and populate a listview in my main.xml?

CustomListView.java

public class CustomListView extends ListActivity  {

private ArrayList<HashMap<String,String>> list;

public CustomListView(){

    list =  new ArrayList<HashMap<String,String>>();

    SimpleAdapter adapter = new SimpleAdapter(
            this,
            list,
            R.layout.custom_list_item,
            new String[] {"pen","price","color"},
            new int[] {R.id.text1,R.id.text2, R.id.text3});

    populateList();

    setListAdapter(adapter);

}

private void populateList() {

    HashMap<String,String> temp = new HashMap<String,String>();
    temp.put("pen","MONT Blanc");
    temp.put("price", "200.00$");
    temp.put("color", "Silver, Grey, Black");
    list.add(temp);
    HashMap<String,String> temp1 = new HashMap<String,String>();
    temp1.put("pen","Gucci");
    temp1.put("price", "300.00$");
    temp1.put("color", "Gold, Red");
    list.add(temp1);
    HashMap<String,String> temp2 = new HashMap<String,String>();
    temp2.put("pen","Parker");
    temp2.put("price", "400.00$");
    temp2.put("color", "Gold, Blue");
    list.add(temp2);
    HashMap<String,String> temp3 = new HashMap<String,String>();
    temp3.put("pen","Sailor");
    temp3.put("price", "500.00$");
    temp3.put("color", "Silver");
    list.add(temp3);
    HashMap<String,String> temp4 = new HashMap<String,String>();
    temp4.put("pen","Porsche Design");
    temp4.put("price", "600.00$");
    temp4.put("color", "Silver, Grey, Red");
    list.add(temp4);

}

}

custom_list_item.xml

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

<TextView android:id="@+id/text1" 
android:textSize="16sp" 
android:textStyle="bold" 
android:textColor="#FFFF00" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent"/>

<TextView android:id="@+id/text2"
android:textSize="12sp" 
android:textStyle="bold" 
android:layout_width="wrap_content" 
android:layout_height="fill_parent"/>

<TextView android:id="@+id/text3" 
android:typeface="sans"
android:textSize="14sp"
android:textStyle="italic"
android:layout_width="wrap_content" 
android:layout_height="wrap_content"/>

Answer 1

you are 50% done some steps are remaining

1 remove the constructor for CustomListView. No need of this.

2 override the onCreate method

public void onCreate(Bundle icicle) {
    super.onCreate(icicle);
    list = new ArrayList<HashMap<String, String>>();
    populateList();
    SimpleAdapter adapter = new SimpleAdapter(this, list,
            R.layout.custom_list_item, new String[] { "pen", "price",
                    "color" }, new int[] { R.id.text1, R.id.text2,
                    R.id.text3 });
    setListAdapter(adapter);
}

3 Add your activity in manifest file like

<activity
        android:name=".CustomListView"
        />

4 How to start from main Activity.you want this on a button click? then you can use Intents

startActivity(new Intent(yourMainActivity.this,CustomListView.class))