Android version history The "Sooner" prototype phone,  running a pre-release version of Android Android Inc.
Writing your first app and seeing it running on your phone is only half the fun when it comes to Android. Head over to http: Setting Up Your Development Environment Java developers, especially those using Eclipse, will have an easy transition to the Android development world.
Android development is supported on the three major operating systems: You can download the specific JDK for your system from http: Android SDK Tools available from http: Take note where this is installed or unzipped for the next step.
Select Developer Tools and click Next, and Next again when presented with the items to be installed. Read and accept the license terms, and click Finish.
When the installation is complete, restart Eclipse. Now configure the installed plugin by clicking on the Window menu and selecting Preferences. Click Apply, then OK. Using the tools now installed, you need to install the SDK components. Launch the manager and select Available packages.
Running the Emulator Now that you have all the tools required to started developing and running Android apps, you need to create a virtual device for your apps to run on in the Android Emulator.
You can also create multiple AVDs to test against, which comes in handy when you want to test your app on different-sized screens and various versions of the SDK.
Give the device a name and select the target SDK from the drop-down. Creating a Project Leaving the Emulator running, restart Eclipse so as to create our first Android project. Fill in the Project and Application names, and then enter a package name for the app.
This package will not only become the top-level Java package for your source files, but also provides a unique identifier for your app. No two apps can have the same package identifier installed on the phone at the same time, and the same goes for apps submitted to the Android Market.
With Create Activity selected, provide a name for the Java class that will become the entry point to your app, and click Finish.
Explore the contents of the generated project. You will find various Java, XML, and configuration files. This is a good time to explain three key concepts used in Android app development.
The Activity will display a user interface in the supplied Window, and interact with the user to perform the task. A single Activity could be displaying a list of emails or showing a map of the current location.
Typically, multiple Activities together form a complete Android application. The generated Activity extends from the class android. Activity and overrides a single method, onCreate. Activities are driven by events coming from the Android operating system, moving the Activity through different stages of its life cycle.
The onCreate method is called when the Activity is being created with the intention of being the current running Activity.
This is achieved using the concept of Intents and Intent Filters. Activities can create Intents as a way of passing responsibility for a task onto other Activities.Nov 15, · ★Java: Java is an object-oriented, general purpose,high-level programming grupobittia.com Java is being used to develop a range of software like web applications, J2ME Apps, Embedded Space, Android, Big Data analytics, etc/5(K).
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Java for Android from Vanderbilt University. This MOOC teaches you how to program core features and classes from the Java programming language that are used in Android, which is the dominant platform for developing and deploying mobile device.
Testing your Auto apps ensures that users don't encounter unexpected results or have a poor experience when interacting with your apps.
Android Auto is available for both car and phone screens, so you need to test your Auto apps for both types of screens. Writing an app for Android is relatively simple once you have the right tools installed and configured to do the hard work for you.
Let Daniel Bradby lead you through the process of writing . Learn Java for android development. No experience required. Includes web-based exercises.