How to work with android studio

How to Use Android Studio

Every app that you see on your phone is created on an Integrated Development Environment (IDE). Android Studio is the official IDE for creating Android apps. It is also the most used IDE, and most apps that you use on your Android phone are created with Android Studio.

Want to make your first Android app but holding back because you don’t know how to use Android Studio? Read this tutorial to learn how to use Android Studio from scratch.

Why Is Android Studio an Ideal IDE?

1. Android Studio comes with the Gradle build system and many other toolchain elements built in. This makes it the easiest IDE to set up for Android development.
2. It has an excellent graphic user interface for coders, making the process of creating an app more accessible and enjoyable.
3. It has a built-in emulator to make it easy to test and debug your app. It can also connect to your device for app testing.
4. Android Studio allows you to create many types of apps and use several different programming languages to do so.
5. It allows you to jumpstart your app with built-in templates and extensive full app templates from sites like CodeCanyon.

How to Set Up Android Studio

I know you are rather excited about creating your first app. However, you have to set up Android Studio first. It can be a little tricky sometimes to set it up; however, this tutorial has simplified the process for you so that you can set up Android Studio within a few minutes and get to making that first app of yours!

System Requirements to Download Android Studio

• if you have Windows: 64-bit Microsoft Windows 8 or 10
• if you are a Mac user: macOS® 10.14 (Mojave) or higher
• if you have Linux: any 64-bit Linux distribution that supports Gnome, KDE, or Unity DE; GNU C Library (glibc) 2.31 or later

Note that these are the basic system requirements. If you are having an issue downloading Android Studio, make sure to visit the Android Studio homepage for more details on system requirements.

Installing Android Studio

Once you’ve downloaded the software, it’s time to install it so that it can run on your computer.

Click to open Android Studio.exe or the equivalent installer file on your computer.

Then, you will be asked to supply the JDK if you have not downloaded it separately. You can download the JDK from the Java homepage. The JDK holds all the essential tools to run a Java app smoothly.

It will then ask you to specify the installation location of Android Studio—the disk and folder where you want to keep it. You also have to pick a spot for the Android Software Development Kit (SDK) which is automatically downloaded with Android Studio.

Now you have to choose which components of Android Studio to install. All of these components are essential to make your apps, so select them all.

Time to hit Next and then Finish.

That’s it! You have finally installed Android Studio and are ready to take on a project!

Your First App Project in Android Studio

The first step now is to click the button that says Start a new Android Studio project.

Now, it’s time to choose your application’s name. Let’s name it MyFirstApp for this example. Then, choose a package name. This is supposed to be unique to your app alone, and it is necessary if you want to deploy your app on the Play Store. A common way to choose a unique app name is to use something like com.companyname.yourappname.

Now it’s time to select the Minimum SDK, which specifies which API level you are going to create your app for. As it says beneath the Minimum SDK bar, with each API level, the features that you can use in your app increase. However, your app will run on fewer devices. The Create New Project dialog includes an estimator for the percentage of devices your app will run on.

So, if you are making an app for someone, see what their preferences are. If you are making a test app to practice, choose any API level of 19 or over because it will cater to more devices and have great features too.

Now, when you hit Next, it’s time to choose the layout of your app’s initial Activity. An Activity is typically used to implement a single screen or view of your app. Let’s pick an Empty Activity so you have a clean slate to work from.

The last step is to choose your Activity’s name. I’ll call mine MainActivity.

Then, it will take a moment to build the project before you enter the Android Studio code editor, where you will be able to write the code of your first app.

Understand Your Activity Screen

Once you have given your Activity a title, this is the screen that will appear. So it’s important to understand what it shows.

1. Toolbar: Allows you to perform common tasks in Android Studio, like building, running, and debugging apps.
2. Navigation Bar: This is more specific to the project’s needs at hand and, as the name indicates, it lets you navigate through the project and the currently opened class file.
3. Editor Window: This is the place where magic brews. Yes, you write your code here, and the contents change when you click on different files.
4. Tool Window Bar: It controls all the Tool Windows, meaning you can click on any of its buttons to expand and collapse a particular Tool Window.
5. Tool Windows: These let you easily navigate and work on a specific task of your project, for example browsing files or viewing debugging information.
6. Status Bar: This bar is at the bottom, showing you the status of your project. It also gives you important messages and warnings.

The Framework of the Project

Let’s focus on this area of the main Activity screen. It shows the framework of your whole project.

Every app that you write has various modules, like Android app modules, library modules, etc. Each module contains these three folders.

1. manifests: Has a file named AndroidManifest.xml. This is an XML file containing the structure of the app.
2. java: Contains all the files with source code.
3. res: This is a short term for resources and contains all non-code resources like images or XML files like the Activity layouts.

How to Test Your App

Once you begin working on your first app, you will want to see how it displays on an Android phone. Android Studio gives you two ways to test your app and see its functioning on an actual Android device.

The first way is to connect it to your phone through a USB cable and make sure that USB debugging is on. Then, click the green button on the Toolbar, and out of the two options it gives you, click Choose a running device.

You can click on it to see how your app looks and functions on your device.

The second way is to run an emulator. If you noticed, clicking that green button on the Toolbar gave you two options. The second option is to Launch emulator. Click that.

Then, you go on to choosing the Android Virtual Device that you want the results to be displayed on. Let’s select Nexus 5X. Set the orientation to Portrait or Landscape as per your app’s demand.

It will take a few seconds to run AVD before the emulator pops up and shows you how your app runs on an Android device.

Go Ahead, Make Your First App!

You now understand how to use Android Studio. This tutorial just gave you a peek into a whole new world that lies ahead.

Now it’s time to get to making that first app of yours. And the truth is, your first app is not going to be very good. Neither is your second or third. But that is how we learn and grow our skills as developers. However, I’m sure your fourth app will deserve applause!

Remember, you perfect with practice.

Start using Android Studio and take your first step towards a hit app on Google Play.

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Android SDK: Working with Android Studio

The goal of this series is to learn about Android development, including the tools and resources you need to in order to start creating apps. In the last part we became acquainted with the Eclipse IDE. Since the platform began, Eclipse has been the main supported development environment used to create Android apps. Eclipse is still the recommended IDE for Android, but this is set to change with the new Android Studio IDE. Android Studio is not yet complete, but it is available as an early access preview. This new IDE is designed specifically for Android development and based on IntelliJ IDEA in conjunction with JetBrains. When it is complete, Android Studio will improve several aspects of its Android development, not the least of which is the process of designing UIs to support the range of Android devices in use. In this tutorial we will install and explore Android Studio.

Introduction

Although Eclipse should still be your main focus for developing Android apps, it is worth spending some time with Android Studio, particularly if you intend to be involved in Android development long term.

1. Installation

Step 1

As you have seen, the ADT Bundle download includes the Eclipse IDE for Android development. To try out Android Studio, download it from the Android Developer site. There are versions for Windows, Mac, and Linux, so choose the one for your operating system.

Step 2

On Windows, install Android Studio by running the executable «.exe» file that you downloaded. Follow the instructions to complete the installation. On Mac OS X, install by opening the DMG file you downloaded, then drag Android Studio to your Applications folder. On Linux, you need to first unzip the downloaded directory. Inside the unpacked folder, browse to the «bin» directory. You can execute Android Studio from here by running the «studio.sh» file.

2. Start a Project

Step 1

Let’s get to know Android Studio by starting a project as we did with Eclipse. When you start Android Studio for the first time, you will be presented with a welcome screen that offers a few options. Choose «New Project».

As you can see, the process of creating a new project is very similar to Eclipse. In the New Project screen, leave the default options for naming the application elements and API level support and then click «Next».

In the launcher icon config screen, leave everything as-is and click «Next».

In the Activity config screen, let Android Studio create a new blank Activity for you by leaving «Blank Activity» selected and click «Next».

Leave the Activity and layout text-fields with the automatically populated file names and click «Finish».

Android Studio will build your project and create a folder for it in the workspace. Like Eclipse, Android Studio manages the files for a project in a single directory and they are all saved inside a folder named «AndroidStudioProjects» onto your system.

3. The Environment

Step 1

Let’s now look at the elements of the Android Studio environment with your new project open. When it creates a new project, Android Studio opens the layout and Activity files for editing, as well as loads a preview of your app’s UI on a virtual device screen. As you can see, the default window layout is slightly different than Eclipse.

Releases of Android Studio vary and will likely continue to, but at the time of writing, by default Android Studio initially displays an editor area for your Java and XML files together with the preview area to the right of the screen. Remember that with Eclipse, we had an area to the left of the window in which we could explore the project structure and open files to edit. In Android Studio you can also do this. If you look above the editor area you will see links to the project directories. Double-click on «MyApplicationProject» to open the project directory in a dedicated view.

Experiment with the project view by expanding the folders that appear within it. Expand «MyApplication» to access the contents of your new project. You will find the items we will work with as we continue to learn Android development inside the «src/main» directory. We will be particularly interested in the content of the «java» and «res» folders. Notice that there are quick contextual links above the editor to locations within the project structure relative to the current file.

The files Android Studio should have opened when you created your project are the Activity file, which you will find in the package folder inside «java», and the layout file, which is stored inside the «layout» folder in «res». Notice that when a layout file is open in the editor, you can switch between design and text views, which will allow you to build and edit your UI elements both graphically and via code. When the Design view is open, to the right you will see the Component Tree, a structural overview of the layout. When the text view of a layout is open, to the right you will see the preview of the layout.

Step 2

Although you may not yet be familiar with the structure of an Android project, once you learn a little more you will see that Android Studio structures the content of your app project’s a little differently than Eclipse. The files you are most likely to work with are stored inside «src». This is because the build system in Android Studio is Gradle-based. Don’t worry too much about this difference if you are working in both Eclipse and Android Studio in the future, as the differences are unlikely to affect you. Just get used to the fact that the source files you work with will be located in different places in the two IDEs.

4. Project Interaction

Step 1

One of the better features in Android Studio is that many of the tools you need are accessible via the buttons in the toolbar. Take a moment to scroll over these now. Notice that there are quick links to launch various utilities including the AVD Manager, SDK Manager, and the Monitor that includes debugging tools.

Step 2

Like Eclipse, Android Studio provides a range of views you can use to interact with the contents of your projects. Select the «View» and «Tool Windows» menu to see the range of options. Clicking these toggles them in-and-out of visibility. Views you may find useful include the Structure view, which is similar to the Outline view in Eclipse and the Event Log view, which displays system output messages.

One view you may find particularly useful once you are attempting to develop and debug apps is the «Android» view. Open it now from the «Tool Windows» menu. This view displays information about actual and virtual devices, together with the LogCat for outputting debugging messages.

5. Updates

Step 1

As with Eclipse, you need to keep your Android Studio installation up to date to get the best use out of it. You can use the «Help», «Check for Update» tool to keep the software itself up to date regularly. This is advisable since Android Studio is under constant development, with patches often released to address issues you may be facing.

Step 2

As we’ve seen with Eclipse, as well as keeping the IDE up to date, you should check for Android updates regularly as well. In Android Studio you can do this by clicking the «SDK Manager» button you see in the toolbar.

The process of keeping the Android SDK up to date is exactly the same as with Eclipse.

Conclusion

In this tutorial we touched on the basics of using the Android Studio interface, but there is a lot more to the software than what we have mentioned here. Lots of tasks are easier in Android Studio, like with forming new files and building user interfaces, simply because the IDE has been created specifically for Android development, unlike Eclipse which is designed to support a vast range of Java development tasks. The software UI provides quicker ways to carry out Android-specific tasks and doesn’t have options that are not relevant to the platform. This IDE also provides easier interfaces to resources such as Google Services. As we work through the skills involved in Android development in Eclipse you may wish to periodically try them out in Android Studio as well. Now that we have our development tools setup, in the next part of this series we will look at the structure of an Android app.

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