How to use ListView element for your android app development tutorial

In this lesson, you'll learn to use list views. Run this basic app. Add a ListView with android:layout_width="match_parent", android:layout_height="match_parent" Assign a new ID to the ListView by setting attribute android:id to value @+id/mainListView1. We have added an array with company names that we want to show in the ListView. To fill the ListView use a ListAdapter. Pass this as the context to the constructor, android.R.layout.simple list_item_1 as the entry layout and companies as the data. Now get the ListView object with findViewById and assign it to a variable. Finally, call setAdapter() on the ListView object and pass the adapter. First we set a new OnItemClickListener with setOnItemClickListener() on the ListView. Now inside the onItemClick method get the list entry text with l.getItemAtPosition(position) and assign it to a new variable String s. Finally, show a toast with the text s.
Add Toast.makeText(MainActivity.this, s, Toast.LENGTH SHORT).show() inside the onItemClick method. Congratulations! You've learned to add a list view to your app. Play with the code on your own a bit. In the next lesson, you'll learn to customize the list entries.

REQUIREMENTS:

Download:

Java JDK

Android SDK

Eclipse

Instruction:

After you download all the files needed in this tutorial, we need to install and set-up a java JDK path to our environment variables, the step below will show you how.

--Go to Java JDK installation directory in "C:\Program Files\Java\jdk1.7.0\bin" Copy this path

--Go to the environment path by Clicking: Window taskbar--->right click Computer--->Click Advance System setting ---> then go to Advanced tab Then select "Environment Variable" then create new Variable name and variable value by clicking the New radio button. Within the "Variable name" input these "JAVA_HOME" then in the "Variable value" point it to your C:\Program Files\Java\jdk1.7.0\bin 

that's it we are on a way of creating our first game and deploy it to a different platform.

After that we will also set-up Android SDK, to its path by extracting first it to the directory you want for example in "drive D:" or "drive C:"  once we did this, we can now copy the root folder of this SDK which is likely to this format "D:\Android SDK" copy it then add it also to the "Environment path" like what you did before in "Java JDK".

COMPLETE CODES

MAIN ACTIVITY CODE 

import android.app.*;
import android.os.*;
import android.view.*;
import android.widget.*;
import android.widget.AdapterView.*;

public class MainActivity extends Activity
{
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState)
{
        super.onCreate(savedInstanceState);
        
        // Set main.xml as user interface layout
        setContentView(R.layout.main);
        
        String[] companies = new String[] { "Google", "Apple", "Facebook",
        "Blackberry", "Samsung", "Twitter", "Intel", "HTC", "Asus" };
       
 ListAdapter adapter = new ArrayAdapter<String>(this,               android.R.layout.simple_list_item_1, companies);
ListView listView = (ListView) findViewById(R.id.mainListView1);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new OnItemClickListener() {

@Override
public void onItemClick(AdapterView<?> l, View v, int position, long id)
{
String s = (String) l.getItemAtPosition(position);
Toast.makeText(MainActivity.this,s,Toast.LENGTH_SHORT).show();
}
});
    }
}

MAIN XML CODE

<?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:orientation="vertical">

<ListView android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:id="@+id/mainListView1"/>
</LinearLayout>