This article was written in and remains one of our most popular posts. 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.
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. This can be either within the same app such as going from an Activity that displays a list of contacts to an Activity that displays the details of the single selected contact or out to an external app when, for example, you want to display a PDF using an installed PDF viewer.
Activities advertise their abilities to handle combinations of actions and data types through Intent Filters.To write an app you are going to need to download and install Android Studio. Included in the download are the Software Development Kit, with all the Android libraries and bits that you need to.
The Best Writing Apps for Android. Kevin Purdy. 11/11/10 pm. For the flip side of the writerly mobile app scene, check out the best writing apps for iOS. Android Studio includes tools for every stage of development, but what's most important is simply writing your app: writing the code, building layouts, creating images, and being productive along the way.
There are lots of reasons why you might want to write an Android app. Maybe you have a great idea and you want to build a prototype, maybe you just want to learn to program for Android, maybe it. Jan 05, · It's perfect for everything from taking notes to writing a novel on your phone or tablet.
Writer's philosophy is Keep It Simple. Writer tries to be as basic as possible, giving you somewhere to turn your thoughts into text, markdown support, and some statistics.
Nothing more. Nothing less. Note: Files are currently stored stored in sdcard://Writer//5(K). Read: Best Handwriting Apps for Android Note-Taking #1 Writer — Most Minimal Writing App for Android.
Writer is probably the best minimal writing app for Android. It does not come with many options, though. It lets you write almost anything on your device, thanks to the non-distractive UI.