Sunday, August 26, 2012

Implement ListView NOT extends ListActivity

Example to implement ListView NOT extends ListActivity:

Create /res/layout/row.xml to define the layout of rows in ListView.
<?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="wrap_content"
    android:textSize="25sp" />


Modify the layout to add a ListView.
<LinearLayout 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:orientation="vertical">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world"
        tools:context=".MainActivity" />
    <ListView
        android:id="@+id/mylist"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

</LinearLayout>


package com.example.androidlistview;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends Activity {
 
 String[] month ={
   "January", 
   "February", 
   "March", 
   "April",
   "May", 
   "June", 
   "July", 
   "August",
   "September", 
   "October", 
   "November", 
   "December"};

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        
        ListView myListView = (ListView)findViewById(R.id.mylist);
        ListAdapter myListAdapter = new ArrayAdapter<String>(
          getApplicationContext(),
          R.layout.row,
          month);
        myListView.setAdapter(myListAdapter);
        myListView.setOnItemClickListener(new OnItemClickListener(){

   @Override
   public void onItemClick(AdapterView<?> parent, View view, int position,
     long id) {
    Toast.makeText(getApplicationContext(), 
      parent.getItemAtPosition(position).toString(), 
      Toast.LENGTH_LONG).show();
   } 
        });
    }

}


Implement ListView NOT extends ListActivity

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