Android Tutorial And Example With Source Code

Service Basics

Jan 02 2013 631893 by admin Download Source Code

** A Service runs with the main application thread , so some time user interaction will lock the current application . Use Service inside a separate thread, you will reduce the risk of Application Not Responding (ANR) errors . So application's main thread can remain dedicated to user interaction with your activities.

** If you are starting service inside any activity then it will block activity so when created service done then only your activity will unlock. in this mean time if user will interacting to activity then Application Not Responding (ANR) errors will come.

** If you want user interaction on when activity is visible and also some server or time taking tasks(performs intensive or blocking operations) then you might create a thread in onCreate(), start running it in onStart(), then stop it in onStop(). Also consider using AsyncTask or HandlerThread, instead of the traditional Thread class

How To Create Button Android Example

Jan 02 2013 631889 by admin Download Source Code

Create button, Button click listener, setOnClickListener

Change Package Name Of Android Application

Jan 02 2013 631893 by admin Download Source Code

Copy application with new package name, Rename Android project, Rename an Android package

Starting an Activity for a Result Video

Jan 02 2013 631891 by admin Download Source Code

Start an Activity for a Result,startActivityForResult,onActivityResult

Android Manifest Basics Video

Jan 02 2013 631897 by admin Download Source Code

Android Manifest Introduction, Android Manifest Basics Video

Activity Life Cycle Basics Video

Jan 02 2013 631883 by admin Download Source Code

import android.app.Activity;
import android.os.Bundle;

public class ActivityBasics extends Activity {

      @Override
      public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
   }
}

Activity Basics

Jan 02 2013 631882 by admin Download Source Code

An Activity is an application component that provides a screen with which users can interact in order to do something, such as dial the phone, take a photo, send an email, or view a map. Each activity is given a window in which to draw its user interface.