List View

List View

• Listview is a view group that displays a list of scrollable items. 

• The list items are automatically inserted to the list using an Adapter that pulls content from a source such as an array or database query and converts each item result into a view that's placed into the list. 

   

  Example Coding:

  Activity_main.xml

  <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 

   xmlns:tools="http://schemas.android.com/tools"     

  android:layout_width="match_parent"     

  android:layout_height="match_parent" 

   android:paddingBottom="@dimen/activity_vertical_margin" 

   android:paddingLeft="@dimen/activity_horizontal_margin" 

   android:paddingRight="@dimen/activity_horizontal_margin"     

  android:paddingTop="@dimen/activity_vertical_margin"     

  tools:context=".MainActivity" >
  
      <ListView         

  android:id="@+id/list"         

  android:layout_width="wrap_content" 

   android:layout_height="wrap_content" >
  
      </ListView>
  
  </RelativeLayout>

  list.xml  

<?xml version="1.0" encoding="utf-8"?>

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 

 android:layout_width="match_parent"    android:layout_height="match_parent" >


    <TextView 

 android:layout_width="wrap_content" 

 android:layout_height="wrap_content"         

android:text="New Text" 

 android:id="@+id/name" 

 android:layout_alignParentTop="true" 

 android:layout_alignParentStart="true" />

    <TextView 

 android:layout_width="wrap_content"         

android:layout_height="wrap_content" 

 android:text="New Text" 

 android:id="@+id/emailid" 

 android:layout_below="@+id/name" 

 android:layout_alignParentStart="true" />
</RelativeLayout>

  MainActivity:

public class MainActivity extends ActionBarActivity {
    ListView list;
    String[] name = {
            "" +
                    "Lucy",
            "Harry",
            "Lizzy",
            "Monty",

    } ;
    String[] emailid = {
            ""+"lucy@there.com","harry@sally.com","lizzy@dizzy.com","monty.python.com",


    };

    @Override    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Adapter adapter = new                Adapter(MainActivity.this, name, emailid);
        list=(ListView)findViewById(R.id.list);
        list.setAdapter(adapter);
    }

    @Override    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present. 

 getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will 

        // automatically handle clicks on the Home/Up button, so long 

       // as you specify a parent activity in AndroidManifest.xml.         

        int id = item.getItemId();

        //noinspection SimplifiableIfStatement         

        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

 Adapter:

public class Adapter extends ArrayAdapter<String> {
    private final Activity context;
    private final String[] name;
    private final String[] emailid;
    public Adapter(Activity context,
                   String[] web, String[] imageId) {
        super(context, R.layout.list,web);
        this.context = context;
        this.name = web;
        this.emailid = imageId;
    }

    @Override    public View getView(int position, View convertView, ViewGroup parent) {

        LayoutInflater inflater = context.getLayoutInflater();
        View rowView= inflater.inflate(R.layout.list, null, true);
        TextView txtTitle = (TextView) rowView.findViewById(R.id.txt);

        TextView imageView = (TextView) rowView.findViewById(R.id.img);
        txtTitle.setText(name[position]);
        imageView.setText(emailid[position]);
        return rowView;
    }
}

Output: