android

Android Screencasts

39 Screencasts

Android BiometricPrompt

10 minutes

As of Android P, the FingerprintManager is deprecated in favor of the BiometricPrompt API. In this screencast, we’ll quickly review a previous FingerprintManager implementation and then dive into setting up your application to use BiometricPrompt.

Creating Adaptive Icons for Android

7 minutes

Android Oreo introduces Adaptive Icons which allow device manufacturers to choose the outline, or mask, of all app icons on the device. This guarantees that all app icons will be uniform on each device, whether they be square, rounded, or circular. In this screencast, we'll learn how to create and save these assets for Android Studio.

Implementing Adaptive Icons in Android

6 minutes

Android Oreo introduces Adaptive Icons which allow device manufacturers to choose the outline, or mask, of all app icons on the device. This guarantees that all app icons will be uniform on each device, whether they be square, rounded, or circular. In this screencast, part 2 of the series, we'll now show you how to generate your icon to take advantage of this new Android O feature.

Build Variants: Product Flavors

6 minutes

Firebase Authentication

8 minutes

User authentication is very useful for mobile apps but can be tricky to get right. In this screencast we'll show you how to set up Firebase with Android.

SAM Type Conversion in Kotlin

7 minutes

In this screencast, we will do a recap on SAM Types, see how they work in Kotlin to support Java interoperability, and we'll also see some of the "gotchas" involved with the feature.

WorkManager

5 minutes

In this screencast, we’ll cover a new background work library introduced at Google I/O 2018 - WorkManager. This release will have a huge impact on most Android apps. Background work has always been painful in Android. There are many different ways to schedule a background work and of course they are different

Navigation

8 minutes

The Navigation Architecture Component was introduced at Google I/O 2018. This new library aims to simplify navigation from one screen to another. In this screencast, we’ll see how to apply the navigation component to an existing app and review the major pieces and parts.

Room Architecture

6 minutes

While Android SDK provides the APIs for using SQLite databases, they force developers to write a lot of boilerplate code. Room solves this problem by creating the glue code that saves objects to SQLite and reads them into memory. In addition, it performs some compile-time checks to ensure correctness of SQL queries.

Android NFC: Android Application Records

3 minutes

In the final screen cast of the series we’ll return to the Android chooser behavior which asks the user which application they wish to use to handle a newly discovered tag. We’ll then look at how we can add an Android Application Record to our NdefMessage which will effectively specify that our app will handle the tag and bypass the chooser. While it is very light on code, the concepts do require a little explanation to make the code changes understandable.

Android NFC: Write an NdefTag

6 minutes

In this screen cast we’ll further build upon the app from the last cast where we got foreground dispatch working to handle tag discovery events within a resumed Activity. We’ll look at how we can construct an NdefRecord, and an NdefMessage and write this to a tag. We’ll also look at the difference in writing to an Ndef tag and an un-formatted NdefFormatable tag.

Android NFC: Foreground Dispatch

5 minutes

In the third screencast of the Android NFC series, we’ll continue to build on the app we’ve been working on in the series so far. Now we’ll begin preparations to write to a tag by creating a new Activity which will use foreground dispatch to get notifications of any tags which are detected while it is in resumed state.

Android NFC: Read Payload Data from a Tag

5 minutes

In the second screencast of this series, we’ll build upon the app we started in the first screencast and demonstrate how we can retrieve the payload of the tag within the Activity which was launched when the device detected a matching tag. Along the way we’ll explore some of the internals of how NFC tags are structured.

Android NFC: Launch Activity

4 minutes

In the first screencast of this series we’ll cover the basics of NFC tags introducing NDEF and the Android tag dispatch system. We’ll look at how to add an intent-filter to the Manifest entry for a given Activity to enable that Activity to be launched when a matching tag is detected by the device.

Kotlin and Android Lifecycles

6 minutes

What are some strategies for dealing with Kotlin and Android Lifecycles? In this screencast, cast you'll learn how Android Lifecycles appear to inhibit some core behaviors of Kotlin.

RecyclerView Efficient Reloading

6 minutes

In this video you will learn how to tell a RecyclerView Adapter that the underlying data has changed. You will also see the typical quick way of telling it to update, as well as a much more efficient implementation.

RecyclerView Multi-View

8 minutes

In this video you will learn how to configure a RecyclerView and its Adapter to display mutliple types of views in the list. You will determine which type of view needs to be displayed depending on the data, create the appropriate view holder, and bind the model data to it.

Espresso Test Recorder

10 minutes

Integration tests provide a way to verify the features in your application continue to work as you expect while adding new features and refactoring existing ones. In this screencast you will learn how to use the Espresso Test Recorder tool in Android Studio to add new integration tests to your test suite quickly and easily.

Room Migration Testing

8 minutes

As applications are developed you will often need to add additional fields to your database. The architecture component Room achieves this by using Migrations. In this screencast, you will learn how to test your database migrations so you can be confident that your apps data is maintained in a clean state.

Kotlin Nullability

5 minutes

In this screencast, we'll learn how to take a Java class converted to Kotlin using the conversion tool built in Android Studio, and apply some better null safety to the code learning about null safety along the way.

Firebase Cloud Storage

10 minutes

Firebase Cloud Storage provides an easy way to store files remotely and fetch them when needed. In this video learn the basics of the cloud storage api to upload, download, and delete files.

Firebase Analytics

7 minutes

Analytics is crucial to seeing how your app actually gets used and determining the best path forward for new features and maintenance. In this screencast learn how to use Firebase Analytics in your application to send custom events on user actions.

Mock vs Spy

6 minutes

There are a wide variety of test doubles you can use to make testing easier. In this video we will discuss mocks and spies, what their differences are and when you would use each of them.

Mocking Basics

6 minutes

Unit testing your classes helps ensure that they work correctly based on controlled inputs but doing the setup can be painful if you have a lot of dependencies. Learn how to create mock objects using Mockito to simplify your setup and improve the readability of your tests.

ConstraintLayout

12 minutes

In this video you will learn about ConstraintLayout. It will cover how to use the graphical editor, how to add constraints to your views and tweak their attributes to position them on screen, and it has an example of converting an existing layout to use ConstraintLayout.

Coordinator Layout

8 minutes

CoordinatorLayout is a tool that allows you to coordinate the movement of one view with another. In this screencast, you will see a few examples of how CoordinatorLayout can be used and how to customize its behavior. We consider this tool to be the best kept secret in Android development. We say that because it's a tool that is powerful but under used. Watch as we use CoordinatorLayout to create some interesting UI patterns where views can respond to the movement of other views.

Android Studio Keyboard Shortcuts

6 minutes

In this screencast, you'll learn how to be more productive with these useful navigation and editing keyboard shortcuts in Android Studio.

Dagger and Kotlin

8 minutes

Dagger is a dependency injection framework. In this screencast you will learn how to set up Dagger in a Kotlin Android app and some best practices.

App Shortcuts in Android

7 minutes

App shortcuts give you the ability to provide convenient shortcuts to specific actions in your application. They provide an entry point to different parts of your application. In this video learn how to implement app shortcuts and give your users quick access to the functionality they want.

Using Java 8 Lambdas to Clean Up Click Listener Code

8 minutes

Android view click listeners are often implemented inline using anonymous inner classes. Lambda syntax offers a more streamlined syntax. This video walks you through how lambda syntax map to anonymous inner class syntax, how to set up your project to support lambda syntax, and how to use Android Studio to make writing or converting to lambdas easy.

Notification Channels

5 minutes

Android O gives users more control over what notifications they want to see from applications. In this video learn how to implement Notification Channels which are required if you want to target Android O.

Autosizing TextView

5 minutes

Android O has the ability to change the size of text in a TextView based on the size of the view. In this screencast learn how to add the autosizing and the different modes available.

ViewModel

6 minutes

In the third video of this series, we’ll add ViewModel to our application. Instead of calling the repository or other components directly from the Activity or Fragment, we can put some of that code in the ViewModel. As a result, our application will become much cleaner and it will be more testable.

LiveData

7 minutes

In the previous video you learned about Room, the object persistence architecture component but we had to use the AsyncTask to perform database access in a background thread. LiveData makes it easier to perform Room's database queries on Android, since it takes care of the activity lifecycle.

Build Variants: Source Sets

6 minutes

In this series, you will learn how to produce separate APKs from the same code base using product flavors. Each flavor will be branded differently, including a custom launcher icon, color scheme, and app name. In this screencast, part 2 of the series, you will learn how to share files across a main source set while providing custom versions of other files for the different app flavors.

Custom Fonts

5 minutes

Android O introduces fonts as resources which will greatly simplify using custom fonts in your app. In this video learn how to add those fonts, how to apply them, and how to create custom font families.

Fingerprint Authentication

8 minutes

The fingerprint manager provides an easy api to verify if a fingerprint is registered on the device. In this screencast learn how to use the api to provide an easy way for users to log in to your application.

Converting a Java Android Project to Kotlin

8 minutes

Google announced official support for the Kotlin Programming language at google io 2017. In this video we will learn how to migrate our existing Java Android projects to the Kotlin language by using the automated Kotlin Conversion tools. In the process, we will also learn Kotlin language fundamentals, including the null safety features of the language, safe call operator, and how statics are represented in Kotlin.

Kotlin Class Extensions

8 minutes

Class extensions are a powerful feature of Kotlin that allow you to add behavior to classes without extending them. In this video we will take a look at how to work with class extensions, some of the subtleties of how class extensions work with custom objects, and how to define your own class extensions to simplify your code.

Android Screencasts

39 Screencasts

Android BiometricPrompt

10 minutes

Creating Adaptive Icons for Android

7 minutes

Implementing Adaptive Icons in Android

6 minutes

Android Oreo introduces Adaptive Icons which allow device manufacturers to choose the outline, or mask, of all app icons on the device. This guarantees that all app icons will be uniform on each device, whether they be square, rounded, or circular. In this screencast, part 2 of the series, we'll now show you how to generate your icon to take advantage of this new Android O feature.

Build Variants: Product Flavors

6 minutes

Firebase Authentication

8 minutes

User authentication is very useful for mobile apps but can be tricky to get right. In this screencast we'll show you how to set up Firebase with Android.

SAM Type Conversion in Kotlin

7 minutes

In this screencast, we will do a recap on SAM Types, see how they work in Kotlin to support Java interoperability, and we'll also see some of the "gotchas" involved with the feature.

WorkManager

5 minutes

Navigation

8 minutes

Room Architecture

6 minutes

Android NFC: Android Application Records

3 minutes

Android NFC: Write an NdefTag

6 minutes

Android NFC: Foreground Dispatch

5 minutes

Android NFC: Read Payload Data from a Tag

5 minutes

Android NFC: Launch Activity

4 minutes

Kotlin and Android Lifecycles

6 minutes

What are some strategies for dealing with Kotlin and Android Lifecycles? In this screencast, cast you'll learn how Android Lifecycles appear to inhibit some core behaviors of Kotlin.

RecyclerView Efficient Reloading

6 minutes

RecyclerView Multi-View

8 minutes

Espresso Test Recorder

10 minutes

Room Migration Testing

8 minutes

Kotlin Nullability

5 minutes

Firebase Cloud Storage

10 minutes

Firebase Cloud Storage provides an easy way to store files remotely and fetch them when needed. In this video learn the basics of the cloud storage api to upload, download, and delete files.

Firebase Analytics

7 minutes

Mock vs Spy

6 minutes

There are a wide variety of test doubles you can use to make testing easier. In this video we will discuss mocks and spies, what their differences are and when you would use each of them.

Mocking Basics

6 minutes

ConstraintLayout

12 minutes

Coordinator Layout

8 minutes

Android Studio Keyboard Shortcuts

6 minutes

In this screencast, you'll learn how to be more productive with these useful navigation and editing keyboard shortcuts in Android Studio.

Dagger and Kotlin

8 minutes

Dagger is a dependency injection framework. In this screencast you will learn how to set up Dagger in a Kotlin Android app and some best practices.

App Shortcuts in Android

7 minutes

Using Java 8 Lambdas to Clean Up Click Listener Code

8 minutes

Notification Channels

5 minutes

Autosizing TextView

5 minutes

Android O has the ability to change the size of text in a TextView based on the size of the view. In this screencast learn how to add the autosizing and the different modes available.

ViewModel

6 minutes

LiveData

7 minutes

Build Variants: Source Sets

6 minutes

Custom Fonts

5 minutes

Fingerprint Authentication

8 minutes

Converting a Java Android Project to Kotlin

8 minutes

Kotlin Class Extensions

8 minutes