Android Studio Beginner Tutorial

• Step By Step Android Studio Pdf

The Android operating system is published in different versions. The following table gives an overview of the available versions. Android versions Code name Version API level Pie 9.0 28 Oreo 8.0 -8.1 26 - 27 Nougat 7.0 – 7.1.1 24 -25 Marshmallow 6.0 23 Lollipop 5.1 22 Lollipop 5.0 21 KitKat 4.4 - 4.4.4 19 Jelly Bean 4.1.x - 4.3.x 16 - 18 Ice Cream Sandwich 4.0.1 - 4.0.4 14 - 15 Honeycomb 3.2.x 13 Honeycomb 3.0 - 3.1 11 - 12 Gingerbread 2.3 - 2.3.7 9-10 Froyo 2.2.x 8 Eclair 2.1 7 Eclair 2.0 - 2.0.1 5 -6 Donut 1.6 4 Cupcake 1.5 3 (no code name) 1.1 2 (no code name) 1.0 1. An Android application (app) is a single installable unit which can be started and used independently. An Android application consists of configuration files, Java source and resource files. You can define the following components in your configuration files: Table 2. Android application components Component Description Application An Android application can have one Application class which is instantiated before any other Android component.

1 Android Tutorial For Beginners. 2 Android Project migration from Eclipse to Android Studio. 2.4 Simple Eclipse ADT project migration to Android Studio.

It is the last component which is stopped during application shutdown. If not explicitly defined, Android creates a default application object for your application. Activity An activity is the visual representation of an Android application. An Android application can have several activities. Activities use views and fragments to create their user interface and to interact with the user. Service A service performs tasks without providing an user interface.

They can communicate with other Android components and send notifications to the user. For example, a broadcast receiver can notify the user via the notification framework in Android.

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Broadcast receiver (short: receiver) A receiver can be registered to listen to system messages and intents. A receiver gets notified by the Android system if the specified event occurs. For example, you can register a receiver for the event that the Android system finished the boot process. Or you can register for the event that the state of the phone changes, e.g., someone is calling.

Content provider (short: provider) A provider defines a structured interface to application data. A provider can be used for accessing data within one application, but can also be used to share data with other applications. Android contains an SQLite database which is frequently used in conjunction with a content provider. The SQLite database would store the data, which would be accessed via the provider. The following table gives an overview of the supported resources and their standard folder prefixes. Resources Resource Folder Description Drawables /res/drawables Images (e.g., png or jpeg files)or vector drawables or XML files which scale automatically with the density of the Android device Simple Values /res/values Used to define strings, colors, dimensions, styles and static arrays of strings or integers via XML files.

By convention each type is stored in a separate file, e.g., strings are defined in the res/values/strings.xml file. Layouts /res/layout XML files with layout descriptions are used to define the user interface for activities and fragments. Styles and themes /res/values Files which define the appearance of your Android application. Animations /res/animator Defines animations in XML for the animation API which allows to animate arbitrary properties of objects over time. Raw data /res/raw Arbitrary files saved in their raw form. You access them via an InputStream object.

Menus /res/menu Defines the actions which can be used in the toolbar of the application. Android supports Plurals. Plurals are XML based resources which allow to handle different quantities. This way you can select the right text based on the quantity. In your XML file you specify values for the quantities “zero”, “one”, “two”, “many”, “few”, “many”, “other” and in your code you use the getQuantityString method to get the correct value. You can also format strings. If now Strings are formated then you pass in the plural resources and the number.

If Objects should be used for formating you pass them as additional parameters. The uses-sdk section in the manifest allows you to specify the minSdkVersion and targetSdkVersion version of your application. Minimum and target version Value Description minSdkVersion Define the minimum version of Android your application works on. This attribute is used as a filter in applications stores Play. A user cannot install your application on a device with a lower API level than specified in this attribute. TargetSdkVersion Specifies the version on which you tested and developed. If it is not equal to the API version of the Android device, the Android system might apply forward- or backward-compatibility changes.

It is good practice to always set this to the latest Android API version to take advantages of changes in the latest Android improvements.

Getting started with Android and Kotlin This tutorial walks us through creating a simple Kotlin application for Android using Android Studio. Installing the Kotlin plugin The Kotlin plugin is bundled with Android Studio starting from. If you use an earlier version, you'll need to install the Kotlin plugin. Go to File Settings Plugins Install JetBrains plugin and then search for and install Kotlin.

If you are looking at the 'Welcome to Android Studio' screen, choose Configure Plugins Install JetBrains plugin You'll need to restart the IDE after this completes. Creating a project It’s extremely easy to start using Kotlin for Android development. In this tutorial we’ll follow the warming up process with Android Studio. Free download tutorial sweet home 3d bahasa indonesia pdf. If using Intellij IDEA with Android, the process is almost the same. First let's create a new project.

Choose Start a new Android Studio project or File New project. The following dialogs walk you through the process of new project creation. You need to name the project and choose which Android SDK version you have installed. Most options can be left with their default values, so you can press 'Enter' several times.

Name the project: Android Studio offers an option to enable Kotlin support on this screen. You can check this option and skip the 'Configuring Kotlin in the project' step below. Choose the Android version: Choose creating an activity that will be generated for you: Name the activity: In Android Studio, you can choose to create the activity in Kotlin right away, so you can skip the 'Converting Java code to Kotlin' step.

Earlier versions will create an activity in Java, and you can use the automated converter tool to convert it. In general, the easiest way to start using Kotlin is by converting the Java activity into Kotlin one automatically. Please note that anytime instead of looking through documentation for a new way to express an old pattern, you can write it in Java, then copy-paste Java code into Kotlin file, and IntelliJ IDEA (or Android Studio) will suggest to convert it. Converting Java code to Kotlin Open MainActivity.java file. Then invoke action Convert Java File to Kotlin File.

You can do it by several ways. The easiest one is to invoke and start typing an action name (like in a screencast below).

Step By Step Android Studio Pdf

Alternatively you can call this option via the Code Convert Java File to Kotlin File menu entry or by using the corresponding shortcut (you can find it at the menu entry). After the conversion you should have an activity written in Kotlin. Configuring Kotlin in the project If you start editing this file, Android Studio shows you a prompt that Kotlin is not configured, so you can configure it. Alternatively, you can invoke the configuration by selecting Tools Kotlin Configure Kotlin in Project from the main menu. You are then prompted for the version of Kotlin.

Choose the latest available from the list of installed versions. After you configure Kotlin, build.gradle file for the application should be updated. Now you can see that apply plugin: 'kotlin-android' and the kotlin-stdlib dependency were added.

(For more details how to set up gradle for your project, please check ) The last thing to do is to sync the project. You can press 'Sync Now' in a prompt or invoke an action Sync Project with Gradle Files.

Building and publishing the Kotlin application for Android You are now ready to build the application and run it on an emulator or device. This works in exactly the same way as in Java. You can make a release of the application and sign it similarly to what you do for an Android application written in Java. Kotlin has a rather small runtime file size: the library is approximately 964KB (as of 1.3.11). This means Kotlin adds just a little to.apk file size.

Kotlin compiler produces byte-code, thus there really is no difference in terms of look and feel of Kotlin applications versus those written in Java. Read about.

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If you want to learn different Kotlin features, try. Check out Google's.