Build an Android Application with Authentication

If you want to follow along using a completed version of the app, clone this repository from GitHub using the simplifiedbranch:

git clone https://github.com/oktadeveloper/okta-oidc-android-example.git -b simplified
cd okta-oidc-android-example

The finished app in the master branch from the repository includes everything described in this blog, along with some additional UI and functionality, testing Okta OIDC easier, and providing you with a production-level skeleton to work with when creating your own app.

Create Your First Android App

First, you’ll need to download and install Android Studio. Next, launch the app and navigate to File → New…​ → New Project…​. Then, create an “Empty Activity” for “Phone and Tablet”. You should now see a screen similar to this:

Choose a “Package name” related to a domain you own (I own akaita.com, therefore I used com.akaita.myapplication in the example), a Save location you can remember, “Kotlin”, and a “Minimum API level” of 23. Finally, click Finish.

Get Your Okta OIDC Configuration Settings

Before adding anything else to your app, you’ll need to quickly obtain the configuration parameters required to configure Okta OIDC authentication:

1. Log in to your Okta Developer account or sign up for a free developer account
2. Once you’ve logged on, you’ll see the Admin Dashboard. Take note of your “Org URL” (at the top right of the screen). In my case, I see: https://dev-123456.okta.com
3. Navigate to Applications → Add Application
4. Choose Native as the platform
5. Add a Login redirect URIs similar to com.okta.dev-123456:/callback (using your own dev-XXXX)
6. Add a Logout redirect URIs similar to com.okta.dev-123456:/logout (using your own dev-XXXX)
7. Click on Done

Next, take note of the Client ID that’s found in the General tab of your new Okta application. It’s a long string of around 20 characters.

Add a Sign-in Button to Your Android App

Now that you’ve finished up in Okta’s Admin Panel, head back to Android Studio and add a button to your res/layout/activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:orientation="vertical">

    <Button
        android:id="@+id/signIn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Sign in" />

    </LinearLayout>

</ScrollView>

This button will be used to authenticate using OAuth 2.0 + OpenID Connect, thanks to the Okta OIDC SDK.

Give Your Android App Permission to Use the Internet

In your app/src/main/AndroidManifest.xml add the following XML between the <manifest></manifest> tags:

<uses-permission android:name="android.permission.INTERNET" />

Add Okta OIDC SDK to Your Android App

1. Add a manifestPlaceholder for appAuthRedirectScheme in app/build.gradle. Make sure it is consistent with your Redirect URIs. For instance, my redirect URIs look like com.okta.dev-123456:/callback, therefore my appAuthRedirectScheme is com.okta.dev-123456
2. Add the required Okta dependencies in app/build.gradle, and declare a Java 1.8 target in the compileOptionsclause (this is required by the OIDC library)

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'

android {
    compileSdkVersion 29

    defaultConfig {
        applicationId "com.akaita.myapplication"  
        minSdkVersion 23
        targetSdkVersion 29
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"

        manifestPlaceholders = [
            "appAuthRedirectScheme": "com.okta.dev-123456" 
        ]

        compileOptions {  
            sourceCompatibility JavaVersion.VERSION_1_8
            targetCompatibility JavaVersion.VERSION_1_8
        }
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
    implementation 'androidx.appcompat:appcompat:1.1.0'
    implementation 'androidx.core:core-ktx:1.2.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'

    // Dependencies required for Okta OIDC
    implementation 'com.okta.authn.sdk:okta-authn-sdk-api:1.0.0'  
    implementation('com.okta.authn.sdk:okta-authn-sdk-impl:1.0.0') {
        exclude group: 'com.okta.sdk', module: 'okta-sdk-httpclient'
    }
    implementation 'com.okta.android:oidc-androidx:1.0.11'

    // Dependency required for Biomatric-Authentication (which we will detail how to implement later on in this same article)
    implementation 'androidx.biometric:biometric:1.0.1'

    testImplementation 'junit:junit:4.13'
    androidTestImplementation 'androidx.test.ext:junit:1.1.1'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

Keep you applicationId here.The redirect URI for the application you created in your Okta Developer Console.Okta OIDC libraries require Java 1.8 compatibility.Add the dependencies required for the Okta OIDC library.

Configure Okta OIDC in Your Android App

In your MainActivity class, add a couple of class properties and a couple of new methods, calling them from onCreate():

import android.os.Bundle
import android.util.Log
import androidx.appcompat.app.AppCompatActivity
import com.okta.oidc.*
import com.okta.oidc.clients.sessions.SessionClient
import com.okta.oidc.clients.web.WebAuthClient
import com.okta.oidc.net.response.UserInfo
import com.okta.oidc.storage.security.DefaultEncryptionManager
import com.okta.oidc.storage.security.EncryptionManager
import com.okta.oidc.storage.security.GuardedEncryptionManager
import com.okta.oidc.util.AuthorizationException
import kotlinx.android.synthetic.main.activity_main.*

/**
* Authorization client using chrome custom tab as a user agent.
*/
private lateinit var webAuth: WebAuthClient 

/**
* The authorized client to interact with Okta's endpoints.
*/
private lateinit var sessionClient: SessionClient 

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    setupWebAuth()
    setupWebAuthCallback(webAuth)
}

private fun setupWebAuth() {
    val oidcConfig = OIDCConfig.Builder()
        .clientId("20-character-long Client ID")
        .redirectUri("com.okta.dev-123456:/callback")
        .endSessionRedirectUri("com.okta.dev-123456:/logout")
        .scopes("openid", "profile", "offline_access")
        .discoveryUri("https://dev-123456.okta.com")
        .create()

    webAuth = WebAuthBuilder()
        .withConfig(oidcConfig)
        .withContext(applicationContext)
        .withCallbackExecutor(null)
        .withEncryptionManager(DefaultEncryptionManager(this))
        .setRequireHardwareBackedKeyStore(true) 
        .create()
    sessionClient = webAuth.sessionClient
}

private fun setupWebAuthCallback(webAuth: WebAuthClient) { 
    val callback: ResultCallback<AuthorizationStatus, AuthorizationException> =
        object : ResultCallback<AuthorizationStatus, AuthorizationException> {
            override fun onSuccess(status: AuthorizationStatus) {
                if (status == AuthorizationStatus.AUTHORIZED) {
                    Log.d("MainActivity", "AUTHORIZED")
                    Toast.makeText(this@MainActivity, "Authorized", Toast.LENGTH_SHORT).show()
                } else if (status == AuthorizationStatus.SIGNED_OUT) {
                    Log.d("MainActivity", "SIGNED_OUT")
                    Toast.makeText(this@MainActivity, "Signed out", Toast.LENGTH_SHORT).show()
                }
            }

            override fun onCancel() {
                Log.d("MainActivity", "CANCELED")
                Toast.makeText(this@MainActivity, "Cancelled", Toast.LENGTH_SHORT).show()
            }

            override fun onError(msg: String?, error: AuthorizationException?) {
                Log.d("MainActivity", "${error?.error} onError", error)
                Toast.makeText(this@MainActivity, error?.toJsonString(), Toast.LENGTH_SHORT).show()
            }
        }
    webAuth.registerCallback(callback, this)
}

private lateinit var webAuth: WebAuthClient is a reference to the web client you will invoke to log inprivate lateinit var sessionClient: SessionClient is a reference to the session you can use to conduct multiple operations after logging in, such as getting the user’s profile, revoking the authentication token, refreshing the authentication token, etc…​setRequireHardwareBackedKeyStore(true) forces the app to require a device with encryption capabilities. This is the default configuration for Okta OIDC and it’s considered the best practice. If you want to run this code in a emulator, though, you can temporarily set it to false.private fun setupWebAuthCallback() is the place where you can define the action to take when authentication succeeds, fails or is canceled…​

#android

What is GEEK

Buddha Community

Top Android Projects with Source Code

Android Projects with Source Code – Your entry pass into the world of Android

Hello Everyone, welcome to this article, which is going to be really important to all those who’re in dilemma for their projects and the project submissions. This article is also going to help you if you’re an enthusiast looking forward to explore and enhance your Android skills. The reason is that we’re here to provide you the best ideas of Android Project with source code that you can choose as per your choice.

These project ideas are simple suggestions to help you deal with the difficulty of choosing the correct projects. In this article, we’ll see the project ideas from beginners level and later we’ll move on to intermediate to advance.

Android Projects with Source Code

Before working on real-time projects, it is recommended to create a sample hello world project in android studio and get a flavor of project creation as well as execution: Create your first android project

Android Projects for beginners

1. Calculator

Android Project: A calculator will be an easy application if you have just learned Android and coding for Java. This Application will simply take the input values and the operation to be performed from the users. After taking the input it’ll return the results to them on the screen. This is a really easy application and doesn’t need use of any particular package.

To make a calculator you’d need Android IDE, Kotlin/Java for coding, and for layout of your application, you’d need XML or JSON. For this, coding would be the same as that in any language, but in the form of an application. Not to forget creating a calculator initially will increase your logical thinking.

Once the user installs the calculator, they’re ready to use it even without the internet. They’ll enter the values, and the application will show them the value after performing the given operations on the entered operands.

Source Code: Simple Calculator Project

2. A Reminder App

Android Project: This is a good project for beginners. A Reminder App can help you set reminders for different events that you have throughout the day. It’ll help you stay updated with all your tasks for the day. It can be useful for all those who are not so good at organizing their plans and forget easily. This would be a simple application just whose task would be just to remind you of something at a particular time.

To make a Reminder App you need to code in Kotlin/Java and design the layout using XML or JSON. For the functionality of the app, you’d need to make use of AlarmManager Class and Notifications in Android.

In this, the user would be able to set reminders and time in the application. Users can schedule reminders that would remind them to drink water again and again throughout the day. Or to remind them of their medications.

3. Quiz Application

Android Project: Another beginner’s level project Idea can be a Quiz Application in android. Here you can provide the users with Quiz on various general knowledge topics. These practices will ensure that you’re able to set the layouts properly and slowly increase your pace of learning the Android application development. In this you’ll learn to use various Layout components at the same time understanding them better.

To make a quiz application you’ll need to code in Java and set layouts using xml or java whichever you prefer. You can also use JSON for the layouts whichever preferable.

In the app, questions would be asked and answers would be shown as multiple choices. The user selects the answer and gets shown on the screen if the answers are correct. In the end the final marks would be shown to the users.

4. Simple Tic-Tac-Toe

Android Project: Tic-Tac-Toe is a nice game, I guess most of you all are well aware of it. This will be a game for two players. In this android game, users would be putting X and O in the given 9 parts of a box one by one. The first player to arrange X or O in an adjacent line of three wins.

To build this game, you’d need Java and XML for Android Studio. And simply apply the logic on that. This game will have a set of three matches. So, it’ll also have a scoreboard. This scoreboard will show the final result at the end of one complete set.

Upon entering the game they’ll enter their names. And that’s when the game begins. They’ll touch one of the empty boxes present there and get their turn one by one. At the end of the game, there would be a winner declared.

Source Code: Tic Tac Toe Game Project

5. Stopwatch

Android Project: A stopwatch is another simple android project idea that will work the same as a normal handheld timepiece that measures the time elapsed between its activation and deactivation. This application will have three buttons that are: start, stop, and hold.

This application would need to use Java and XML. For this application, we need to set the timer properly as it is initially set to milliseconds, and that should be converted to minutes and then hours properly. The users can use this application and all they’d need to do is, start the stopwatch and then stop it when they are done. They can also pause the timer and continue it again when they like.

6. To Do App

Android Project: This is another very simple project idea for you as a beginner. This application as the name suggests will be a To-Do list holding app. It’ll store the users schedules and their upcoming meetings or events. In this application, users will be enabled to write their important notes as well. To make it safe, provide a login page before the user can access it.

So, this app will have a login page, sign-up page, logout system, and the area to write their tasks, events, or important notes. You can build it in android studio using Java and XML at ease. Using XML you can build the user interface as user-friendly as you can. And to store the users’ data, you can use SQLite enabling the users to even delete the data permanently.

Now for users, they will sign up and get access to the write section. Here the users can note down the things and store them permanently. Users can also alter the data or delete them. Finally, they can logout and also, login again and again whenever they like.

7. Roman to decimal converter

Android Project: This app is aimed at the conversion of Roman numbers to their significant decimal number. It’ll help to check the meaning of the roman numbers. Moreover, it will be easy to develop and will help you get your hands on coding and Android.

You need to use Android Studio, Java for coding and XML for interface. The application will take input from the users and convert them to decimal. Once it converts the Roman no. into decimal, it will show the results on the screen.

The users are supposed to just enter the Roman Number and they’ll get the decimal values on the screen. This can be a good android project for final year students.

8. Virtual Dice Roller

Android Project: Well, coming to this part that is Virtual Dice or a random no. generator. It is another simple but interesting app for computer science students. The only task that it would need to do would be to generate a number randomly. This can help people who’re often confused between two or more things.

Using a simple random number generator you can actually create something as good as this. All you’d need to do is get you hands-on OnClick listeners. And a good layout would be cherry on the cake.

The user’s task would be to set the range of the numbers and then click on the roll button. And the app will show them a randomly generated number. Isn’t it interesting ? Try soon!

9. A Scientific Calculator App

Android Project: This application is very important for you as a beginner as it will let you use your logical thinking and improve your programming skills. This is a scientific calculator that will help the users to do various calculations at ease.

To make this application you’d need to use Android Studio. Here you’d need to use arithmetic logics for the calculations. The user would need to give input to the application that will be in terms of numbers. After that, the user will give the operator as an input. Then the Application will calculate and generate the result on the user screen.

10. SMS App

Android Project: An SMS app is another easy but effective idea. It will let you send the SMS to various no. just in the same way as you use the default messaging application in your phone. This project will help you with better understanding of SMSManager in Android.

For this application, you would need to implement Java class SMSManager in Android. For the Layout you can use XML or JSON. Implementing SMSManager into the app is an easy task, so you would love this.

The user would be provided with the facility to text to whichever number they wish also, they’d be able to choose the numbers from the contact list. Another thing would be the Textbox, where they’ll enter their message. Once the message is entered they can happily click on the send button.

#android tutorials #android application final year project #android mini projects #android project for beginners #android project ideas #android project ideas for beginners #android projects #android projects for students #android projects with source code #android topics list #intermediate android projects #real-time android projects

Find Android TV App Development Services in USA | SISGAIN

There was a time when televisions were just a dream. Then with the new generation, came new technologies and television evolved. Now is the era of big screens and portable devices. Our android TV application development company in the USA provides you with genuine and innovative android tv app development solutions. Our android TV App developers consider your maintenance needs and work hard to feed you the best services available. For more information call us at +18444455767 or email us at hello@sisgain.com or Visit: https://sisgain.com/android-tv-application-development

#android tv app development #android tv application development company #android tv application development company in dubai #android tv application development company in usa #android application development company in uk #android tv application development company in australia

Building Dark Mode Theme in Android

Hello World, today we are going to see how we can implement a dark theme or night mode in our android application. This tutorial is going to be very simple and easy to understand. The dark theme is attractive to users and it is comfortable for low light conditions.

Recently many apps adapt dark mode in their app and the output of the night mode is amazing as many users love dark mode for their app. An example of a dark theme is Whatsapp dark mode in android see the below image.

Let’s look at how our app will look like, see the below gif for our end result app.

Let’s see how we can implement dark theme in our app.

Make layout for dark theme

First, we need to make our layout so that we can apply our dark theme to it.

If you see the above gif we used cardview to make our layout.

See the below code for layout.

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:padding="10sp"
    >

    <androidx.cardview.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:cardCornerRadius="10sp"
        android:id="@+id/post"
        >
        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:padding="10sp"
            >
            <androidx.cardview.widget.CardView
                android:layout_width="70sp"
                android:layout_height="70sp"
                android:id="@+id/profilePicContainer"
                app:cardCornerRadius="100sp"
                app:layout_constraintLeft_toLeftOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                >
                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"

                    android:src="@drawable/user1"
                    />
            </androidx.cardview.widget.CardView>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/username"
                android:text="John Doe"
                android:textAppearance="@style/TextAppearance.AppCompat.Large"
                app:layout_constraintLeft_toRightOf="@id/profilePicContainer"
                android:layout_marginStart="10sp"
                app:layout_constraintTop_toTopOf="@id/profilePicContainer"
                />
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/time"
                android:text="Just now"
                android:textAppearance="@style/TextAppearance.AppCompat.Caption"
                app:layout_constraintLeft_toRightOf="@id/profilePicContainer"
                android:layout_marginStart="10sp"
                app:layout_constraintTop_toBottomOf="@id/username"
                />

            <TextView
                android:layout_width="match_parent"
                android:layout_height="35sp"
                android:id="@+id/caption"
                android:text="Lorem Ipsum is simply dummy text of the printing and typesetting industry."
                app:layout_constraintTop_toBottomOf="@id/profilePicContainer"
                android:textAppearance="@style/TextAppearance.AppCompat.Body2"
                android:layout_marginTop="10sp"
                />

            <ImageView
                android:layout_width="match_parent"
                android:layout_height="250sp"
                android:id="@+id/photoPost"
                android:scaleType="centerCrop"
                app:layout_constraintTop_toBottomOf="@id/caption"
                android:src="@drawable/post"
                android:layout_marginTop="10sp"
                />

            <ImageView
                android:layout_width="30sp"
                android:layout_height="30sp"
                android:id="@+id/likeBtn"
                android:src="@drawable/ic_like"
                app:layout_constraintLeft_toLeftOf="@id/photoPost"
                app:layout_constraintTop_toBottomOf="@id/photoPost"
                android:layout_marginTop="15sp"
                />

            <ImageView
                android:layout_width="30sp"
                android:layout_height="30sp"
                android:id="@+id/shareBtn"
                android:src="@drawable/ic_share"
                app:layout_constraintLeft_toRightOf="@id/likeBtn"
                app:layout_constraintTop_toBottomOf="@id/photoPost"
                app:layout_constraintTop_toTopOf="@id/likeBtn"
                android:layout_marginLeft="15sp"
                />

        </androidx.constraintlayout.widget.ConstraintLayout>
    </androidx.cardview.widget.CardView>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/changeThemeBtn"
        android:text="Change Theme"
        app:layout_constraintTop_toBottomOf="@id/post"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        android:layout_marginTop="20sp"
        android:paddingHorizontal="10sp"

        />

</androidx.constraintlayout.widget.ConstraintLayout>

#android-app-development #android-development #android-studio #android #android-tutorial #android-dark-mode #android-mobile-app #mobile

A Guide to Building Custom Switches in Android

Hello World, today we are going to make a custom switch. Why? Because the default one looks so boring and ugly. Why we use a switch? As the name suggests, the switch is used to trigger the value either it is on, or it is off. Let’s see, how our custom switch will look at the end of the tutorial.

In the above gif, there are 3 switches. The First one is the default one and the second and third are our custom switches. To make these custom switches we need to follow certain steps are as follows:

Step 1. Add Switch to Activity Layout

First, we need to add the switch to our layout XML file. We will add SwitchCompat to the layout.

Look at the below code for better understanding.

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    >
    <androidx.appcompat.widget.SwitchCompat
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/customSwitch"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"

        app:track="@drawable/track"
        android:thumb="@drawable/thumb"

        android:text="Custom switch  "

        />
</androidx.constraintlayout.widget.ConstraintLayout>

In the above code, things to be noticed are app:track and android:thumb attributes.

The track is the horizontal container where our thumb or round shape view is placed and the thumb is, as I told you before, is the round shape where we will add an image on top of it.

Step 2. Make Custom Track for Switch

To make our custom track we need to make a drawable file and set the root element as a selector. So click on the drawable folder and make a new file and name it as track.

In our track.xml we write this code for making the custom track.

#android-dev #android-app-development #android-development #android-studio #androiddev #android-tutorial #android-hacks #android-p-developer

Build Tool for Android Applications

In this article, we’ll learn about Android Gradle plugin. We’ll see what what is Gradle in Android Studio and why it is necessary.
What is Android Gradle?
Gradle is actually an open-source build system. It is a tool that automates building, deployment, etc of a project. This tool is often used for Java Virtual Machine languages such as Java, Scala or Groovy. It is configured to do various tasks like testing, running, creation of documents, etc. Its strength is the flexibility that it provides to the developer.

For example, consider the task of copying a file from one directory to another. This task can be performed by Gradle build script even before the actual build process will happen.

#android tutorials #android gradle #android gradle plugin #android studio gradle #latest gradle version #latest gradle version android #what is gradle in android studio