Learn Android 4.0 Programming in Java
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Learn Android 4.0 Programming in Java

Learn to write real, working Android applications quickly and effectively, from the ground up.
4.4 (1,376 ratings)
Instead of using a simple lifetime average, Udemy calculates a course's star rating by considering a number of different factors such as the number of ratings, the age of ratings, and the likelihood of fraudulent ratings.
67,943 students enrolled
Created by John Purcell
Last updated 10/2013
English
English
Price: Free
Includes:
  • 15.5 hours on-demand video
  • 6 Articles
  • Full lifetime access
  • Access on mobile and TV
  • Certificate of Completion
What Will I Learn?
  • Learn how to create Android applications
View Curriculum
Requirements
  • You should ideally already know some Java before taking this course.
Description

A practical guide to Android development. Learn to create Android programs using Java, and create the app of your dreams!

Who is the target audience?
  • Anyone who wants to create Android apps
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Curriculum For This Course
Expand All 96 Lectures Collapse All 96 Lectures 15:21:27
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Nuts and Bolts: The Basics of Android Programming
48 Lectures 07:53:27
What we're going to cover in the first section of the tutorial.
Nuts and Bolts Introduction
03:41

How to install the free software that you'll need to develop for Android.

Setting Up Your System
08:48

You'll need an emulator to see your first program running. We'll create one in this tutorial.

Creating An Emulator
07:56

Finally, it's time to create a "Hello World" application!

Hello World
04:49

The EditText "View" lets the user enter text. We'll use it in our application to let the user save some notes.

The EditText View
11:56

Buttons And Linear Layouts
08:28

In this tutorial we'll add some code that will get run when the "save" button is clicked.

Responding To Button Clicks
06:46

Important Notes
00:08

In spite of the ferocious-sounding names, DDMS and logcat are very easy to work with and will help you double-check what's going on in your application. In this tutorial we'll use DDMS to double-check that our button click handler is working as expected.

Debugging With DDMS And Logcat
06:47

There are various options for saving data in Android; search for "android storage options" in Google for more info. We'll be taking a look at some of them in this course, starting with saving files to internal storage in this tutorial.

Saving Files To Internal Storage
11:26

Now that we've written a file to internal storage, in this tutorial we'll move on to reading it.

Reading Files From Internal Storage
07:34

String Resources and Localization
06:58

You can, and should, create a nice icon to launch your application with. There are a few little complications to creating graphics for phones, but we'll get the hardest bit out the way right here!
Creating Launcher Icons
09:46

Running On Your Phone
07:26

Preferences allow you to save small amounts of data -- single boolean values, integers and so on -- in such a way that the data persists between runs of your application.
Saving Program Data: Preferences
08:59

Toasts are little dialogs which go away by themselves, enabling you to mention something to the user without being too annoying in the process.
Toasts: Alerting the User
05:13

Applications often consist of more than one activitiy. Here we'll create a second activity that we're going to use to display an image.
Adding a New Activity
04:19

The ImageView view lets you display images.
Displaying Images with the ImageView View
07:07

You can use touch listeners to find out exactly where the user touches the screen.
Getting Touch Coordinates
09:56

If you really want a dialog and not a toast, you can have one. Here we use one to make sure the user has absolutely definitely read our information before proceeding.
Alert Dialogs
06:16

While not Android-specific, I'll be using the Event-Listener pattern to simplify the code a little bit. We'll cover it here. If you only want to know Android-specific stuff, you can skip this tutorial. But if you want to increase your mastery of Java, stay tuned.
The Event-Listener (aka Observer) Pattern
14:44

Android incorporates the SQLite database. Here we'll see how to create a database that your application can use to store data. I assume you know basic SQL for this tutorial, or else at least don't mind seeing a bit of SQL from time to time ...
Creating a Database
06:47

Adding Data to a Database
11:13

Once we've covered retrieving values from our database, we'll finally be able to check that it actually works ....
Retrieving Data from Databases
11:16

Asynchronous tasks let you execute stuff in the background. If you have a task that takes up to a few seconds, it's best to execute it in the background rather than hold up your main application thread, freezing the interface. Note: if you have a task that takes more than a few seconds, you need to look into more general Java concurrency; check out my free tutorials on multithreading on www.caveofprogramming.com. 
Asynchronous Tasks: Running Stuff in the Background
10:56

You can't update the main thread from the doInBackground method of an asynchronous task. So how can you return data from your processing? We'll look at that here. 
Verifying the Passpoints: Getting Return Values From Asynchronous Tasks
47:36

You can declare the screen sizes your application supports in the manifest file, and indeed you should ....
Supporting Different Screen Resolutions
04:45

To tell your phone to do something programmatically, you need to create an "intent". Here we'll use an intent to launch an activity.
Intents and Launching Activities
06:00

You can nest ViewGroups to create quite complex layouts, although this isn't always the most efficient way to arrange your screen.
Nesting ViewGroups
07:08

Option Menus
12:50

Often you want to start some activity and send it some data at the same time, perhaps instructing it to take some special action.
Passing Data to Activities
07:37

You can trigger an activity and return later to the activity you triggered it from. This is very useful for stuff like taking photos in your application, as well as about a million other things, so we'll take a look at it here.
Sub-Activites
08:49

Taking Photos
06:28

How to save the photos you take and use them in your application, plus a first look at permissions in Android.
Saving and Displaying Photos
18:30

ListViews allow the user to choose between a bunch of different options. They're one of the commonest Android views, so well worth knowing.
List Views
14:31

You can populate your lists dynamically at runtime, rather than hardcoding values. We'll also look at retrieving string array resources in this tutorial.
Dynamically Populating Lists
06:50

Formatting List Items: Custom Adapters
30:54

Using Icons in Views
17:17

You can take style information (fonts, colours, etc) out of your XML layouts and put them in separate stylesheets instead. That way you can more easily re-use a given style, and you can collect all style information together in one place. A style for an entire activity is known as a theme. In this tutorial we'll use styles to style our list demo.
Styles and Themes
15:53

Selectors are drawable items that change depending on your application state. We'll use color selectables here to change the color of list items temporarily when you click on them.
Selectors
09:53

Relative layout is a very powerful ViewGroup that allows you to create complex arrangements of Views by positioning them relative to each other.
Relative Layouts
12:05

How to browse the gallery from your application by launching an appropriate sub-activity.
Browsing the Gallery
07:25

Once you've browsed the gallery and selected an image, you have to do a little work to convert the URI of the image to a file name ....
Retrieving an Image from the Gallery
14:47

All activities have a "lifecycle", which you need to understand and can use to your advantage.
The Activity Lifecycle and Saving Data
08:15

Some things you shouldn't forget to do before attempting to publish your app.
Pre-Publication Checks
06:03

You can use DDMS to take screenshots of your application, which you can then use when you publish your app.
Taking Screenshots of Your App
00:39

You need to sign your application by creating a digital certificate before you can publish it. In this tutorial we'll see how to create a digital certificate and export the app as an .apk file, signed with the certificate.
Signing and Exporting Your App
03:58

Once you've digitally signed and exported your app, it's easy to publish it --- although you do need to pay 25 USD for a developer account before you can publish apps. We'll look at the process here.
Publishing Your App
05:59
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More Useful Stuff
3 Lectures 25:32
Using 3rd Party APIs
06:38

Action bars are those bars that appear at the top of the screen in Android 3.0 or greater. You can put icons, titles and menus in them. We'll take a good look at menus in this tutorial, as well as how to turn display of the titles and icons on and off.
Action Bars
13:11

Once you've created your action bar menu, you'll be wanting to take action when someone selects things from it. We'll see how to do it here.
Responding to Action Bar Menu Clicks
05:43
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Communication
10 Lectures 01:45:49
In this tutorial we'll start to look at communication by taking the simplest case -- downloading textual data from the Internet.
Downloading Text Data from the Internet
10:53

Let's take a look at how phones can communicate with PCs, with the Internet and with each other. No code in this tutorial; it's just an overview. 
Internet Communication Overview
07:25

In this tutorial we'll create a simple Java servlet program to act as an Internet server for our device to communicate with. You can find more about servlet programming at this url:

http://www.udemy.com/javawebtut/

The first seven videos are free and cover everything you need to know in detail to get a servlet up and running on the Internet. You could also use something like PHP or Ruby to get a server program up and running.


A Simple Server (Java Servlet) Program
13:31

If you want to send small amounts of data to a server (e.g. an id) you can do it via a HTTP GET (in other words, in the URL). 
Sending Small Amounts of Data to a Server
12:34

If you want to send text to a server in a URL, you have to be careful to only send small amounts and you need to take care of special characters. We'll look at the latter here.
URL Escaping
11:13

Let's take a look at an example of an existing JSON server. You can write your own JSON servers too, of course. JSON is an alternative to XML, and either option is a good way to protect a database while allowing people to connect to it in a controlled way.
Introducing JSON with Twitter and The Onion
07:29

Decoding JSON
14:30

Let's take a look at encoding data in the JSON format.
Encoding Data as JSON
09:58

Responding to POST Requests in a Servlet
04:30

If you want to send a lot of data to a server, you'll want to send it via a POST request, not a GET. We'll look at how to POST text (JSON) data here.
Posting JSON Data to a Server
13:46
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Layout Techniques
5 Lectures 01:07:23
Fragments are self-contained re-useable parts of activities. In this tutorial we'll create a simple example.
Introducing Fragments
16:07

ListFragment is a specialised kind of fragment that makes displaying lists very easy. We'll take a look at it here.
Using ListFragment to Display Lists
08:34

It's pretty easy to format items in a list fragment (or anything else that uses ArrayAdapter to format items). Let's do it here, because these items are rather unsightly due to being unduly large.
Formatting Items in ListFragment
04:46

The key to fragment communication is the Observer pattern, which old hands will recognise at once, while if you're relatively new to GUI programming, you may be left puzzled by it. In this tutorial we'll break it down into steps, and you'll most likely find that once you've typed out the steps yourself a few times, it'll start to really make sense.
Fragment Communication
20:33

You can replace one fragment with another, meaning we can do stuff like showing fragments side by side on a large screen, but replacing one with another in response to user interaction on a small screen. In this tutorial we'll look at how to use the fragment manager to replace one fragment with another.
Managing Fragments
17:23
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Games and Animation
21 Lectures 03:27:29
Introducing frame-based animation in Android with a very simple game example.
Animation Introduction
02:26

By extending SurfaceView we can create a view that we can use for drawing on.
SurfaceView
07:00

Just a quick note on the software I used to generate the elementary sound and graphics for this section of the tutorial.
Images and Sound: POV Ray and Psycle
05:04

Finally we can draw some images!
Drawing Images
10:14

Our game is going to start up when the view surface is created, and stop (or pause) when the drawing surface is destroyed; so for that we need to know how to detect surface creation and destruction events.
Detecting Surface Changes
08:37

In this tutorial we'll set up a separate thread that will tell our game when to update and draw itself. It'll contain the "game loop" that's at the hard of all serious animation projects.
The Animation Thread (Game Loop)
14:23

In this tutorial we'll create a game class that basically will manage the various entities that will compose our game, drawing them and updating them.
The Game Class
12:11

Let's create a class that can represent a sprite (an entity that visually appears in our game). We'll get it drawing something in this tutorial; then we can use it as a base class for specific game entities in future.
A Sprite Class
19:39

In this tutorial we'll make our first sprite actually move.
Animating the Sprite
09:31

Making the Ball Bounce
13:24

In this tutorial I'm just going to show you a little bit of code I added to enable me to position the shadow relative to the main image. We'll also take a quick look at auto-cropping in GIMP.
Bring Out the GIMP: Autocropping
03:56

In this tutorial we'll add a couple of bats to our game. They won't hit the ball or move yet, but at least they'll be there.
Adding the Bats
15:45

Let's use the standard Random class to randomise the direction of the ball when the game starts.
Randomising the Ball Position
06:05

By handling touch events we can control the player's bat, taking a big step towards turning this from an animation into a game.
Controlling the Player's Bat (Touch Events)
05:29

In this tutorial we'll add a simple random algorithm to control the opponent's bat, giving a sort of vague appearance of a deranged hyperactive intelligence.
Simulating Intelligence
12:51

Once we've added some collision detection, making good use of Rect.contains(), we can get the ball to bounce off the bats.
Collision Detection
09:23

It's useful to be able to draw text in games, either to display an entire status screen, or just to show the score.
Drawing Text
09:03

In this tutorial we add states to our game, so that it can be paused vs running, won or lost etc.
Game States
15:27

It's time to add sound to our game! In this tutorial we'll look at playing sounds in Android.
Playing a Sound
13:09

In this tutorial we'll look at an efficient way of playing multiple sounds.
Playing Multiple Sounds
10:32

Now we can add the finishing touch to our game by allowing the user to adjust the volume, without which our game would be rather annoying.
Adjusting the Volume
03:20
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Map Applications with Android V2 API
4 Lectures 41:05
The first step to creating a maps V2 application is installing Google Play Services and creating a library project.
Installing Google Play Services
06:18

Creating and signing a basic application; we'll leave actually getting it working for the next tutorial!
Creating and Signing a Map Application
14:52

Finally we can get the map demo up and running and actually see a map, if we're lucky.
Getting the Map Demo Running
08:52

This is a tutorial on adding markers to maps and making them clickable. Well if I'm honest, it's me blundering through the documentation to figure out how to do this. Hopefully it's entertaining :) It's good to see that Google have simplified this a lot since the last API version.
Adding Markers to Maps
11:03
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Appendix 1: Source Code
5 Lectures 00:28
Nuts and Bolts Source Code
00:02

Communication source attached. Note, one of these projects is actually a Java servlet, not an Android app. If you prefer to use a PHP server, you can find an example at http://www.caveofprogramming.com/php/php-json-an-example-javascript-json-client-with-php-server/
Communication Source Code
00:08

Layout Techniques Source Code (Fragments)
00:01

Games and Animation Source Code
00:01

Attached you can find the source code for the map applications (API version 2, which is the latest version as of March 2013 --- but may not be the latest if you're watching this in the future .... note, Android maps API is only up to version 2, while the Javascript map API - something else entirely -- is up to version 3.)
Maps Source Code
00:15
About the Instructor
John Purcell
4.4 Average rating
52,834 Reviews
903,479 Students
12 Courses
Software Development Trainer

After working as a software developer and contractor for over 14 years for a whole bunch of companies including CSC, Proquest, SPSS and AT&T in the UK and Netherlands, I decided to work full-time as a private software trainer. After spending four years in the beautiful city of Budapest, Hungary and a year in Berlin, I now live in my home town of Derby, UK.