MyBuddies102: ListView ArrayAdapter and OnClick Listener

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MyBuddies102: ListView ArrayAdapter and OnClick Listener

ListView must implement ArrayAdapter to get data from sources and convert them into view that are placed in a list.

0) Starting Up

Continue from previous tutorial http://android-steps.blogspot.my/2015/02/mybuddies101-listview-string-resources.html 

1) Delete String Resources

File: res/values/strings.xml

<?xml version="1.0" encoding="utf-8"?>   <resources>       <string name="app_name">MyBuddies</string>            <string-array name="buddies_array">         <item>Superman</item>         <item>Spiderman</item>         <item>Batman</item>         <item>Ironman</item>         <item>Ultraman</item>         <item>Pacman</item>         <item>Roboman</item>     </string-array> </resources>

2) Add String Resources to Controller File (MyBuddies.java)

File: MyBuddies.java

package com.example.MyBuddies;               import android.app.Activity;       import android.os.Bundle;       import android.widget.Button; import android.widget.ListView; import android.widget.TextView; import android.view.View; import android.widget.AdapterView; import android.widget.ArrayAdapter; import android.widget.Toast; import java.util.ArrayList; import java.util.Arrays; import java.util.List;         public class MyBuddies extends Activity       {           Button btnAddBuddy;     ListView lvwBuddies;     String[] strBuddies;     ArrayAdapter adpBuddies;         /** Called when the activity is fit created. */           @Override           public void onCreate(Bundle savedInstanceState)           {               super.onCreate(savedInstanceState);               setContentView(R.layout.main);         setBtnAddBuddy();         setLvwBuddies();     }             private void setBtnAddBuddy(){         btnAddBuddy=(Button) findViewById(R.id.btn_addbuddy);                 //set onlicklistener for button         btnAddBuddy.setOnClickListener(new View.OnClickListener() {             public void onClick(View v) {                 addBuddy();             }         });             }     private void setLvwBuddies(){         lvwBuddies = (ListView) findViewById(R.id.lvw_buddies);                 //Add new values to array         strBuddies =new String[] {"Superman","Spiderman","Batman","Ironman","Ultraman", "Pacman", "Roboman"};                 //Create ArrayList from strBuddies         List<String> values = new ArrayList<String>(Arrays.asList(strBuddies));                 //Create Adapter to load ArrayList         adpBuddies = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, values);                 //Plug adpBuddies to lvwBuddies         lvwBuddies.setAdapter(adpBuddies);                 //set onclick listener for listview         lvwBuddies.setOnItemClickListener(new AdapterView.OnItemClickListener() {             @Override             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                 editBuddy(position, ((TextView) view).getText().toString());             }         });     }     private void addBuddy(){         Toast.makeText(getApplicationContext(),"Add Buddy.",                 Toast.LENGTH_SHORT).show();             }     private void editBuddy(int position, String text){         Toast.makeText(getApplicationContext(),"Edit Buddy.\nPosition:"+position+"\nText:"+text+"\n",                 Toast.LENGTH_SHORT).show();             } }

OUTCOME.

DOWNLOAD

MyBuddies102.zip

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