How to get data from Array-String (Listview Example 1)

Posted by Shoaib at 9:34:00 pm Read our previous post

Main Activity: 

package com.example.shoaibm.praclist;

import android.content.res.Resources;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {
    ListView listView;
    String[] data;
    Resources res;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = (ListView)findViewById(R.id.listView);
        res = getResources();
        data = res.getStringArray(R.array.teacher);
        ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, data);
        listView.setAdapter(adapter);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

          Toast.makeText(getApplicationContext(),data[position],Toast.LENGTH_LONG ).show();
            }
        });
    }

Activity Main:

<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:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

    <ListView        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/listView"        android:layout_alignParentLeft="true"        android:layout_alignParentStart="true"        android:layout_alignParentBottom="true"        android:layout_alignParentTop="true" />
</RelativeLayout>



Values/Strings.xml: 
<resources>
    <string name="app_name">PracList</string>

    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
    <string-array name="teacher">
        <item> C</item>
        <item> C++</item>
        <item> Java</item>
        <item> Python</item>
        <item> SHoaib</item>
        <item> Mahmud</item>
        <item> Jibon</item>
        <item> Linkon</item>
        <item> C</item>
        <item> C++</item>
        <item> Java</item>
        <item> Python</item>
        <item> SHoaib</item>
        <item> Mahmud</item>
        <item> Jibon</item>
        <item> Linkon</item>
    </string-array>
</resources>

Developer Notes: For better Understanding: