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Launching Your First Android Application

With all tools and the SDK downloaded and installed , it is now time to start your engine.As in most programming blog, the first example uses the ubiquitous Hello World application. This will give you a detailed look at various components that make up an Android project. This is also the easiest Android project you will ever make.

Believe it or not , the Hello Wold Application is already finished. By default , when you create a new application in Android Studio , it creates a Hello World application. Let's launch this application and , in the process , also launch the Android emulator to see how everything works.

1. Select Run -> Run app from the Android Studio menu bar. You should see the Select Deployment Target dialog as shown.


2. Select the Nexus 5X API 25 ( feel free to select the Nexus 5x API 25 , which is the Jelly Bean emulator that you created in the Try It Out for the last section),and click Next.

 NOTE :- note that if there's ever a time when you have not already created the emulator, you can create an emulator at this point.

3. It can up to five minutes , and sometimes longer(depending on the hardware specs of your desktop) for the emulator to start and fully load. During this time (the first time you launch the emulator) the application might time out. If a message pops up in Android Studio telling you that application timed out waiting for the ADB(Android Debugging Bridge) to start , or another similar message , just wait for the emulator to fully load , and then once again select Run -> Run app from the Android Studio bar.

With the emulator fully loaded and started , Android Studio can install your Hello World application. The application will display as shown 

 This was a very example for how to create and launch your first Android applications. However, what this example has really done for is introduce you, on a general scale , to most of the major skills you will fine tune throughout this blog.
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