60 Recommended Topics

Remove Filter
Member Avatar

## Introduction ## When working with Room, you might have run into a situation where you only want to update specific fields of an entity instead of replacing the entire row. In this tutorial, we will learn how to do this in two different ways. ## Goals ## At the …

Mobile Development android database kotlin
2
14
Member Avatar

## Introduction ## On the android platform, widgets provide a quick way to interact with your Apps. They are extremely useful at providing quick information without the user launching the app Activities themselves. Common use cases for homescreen widgets are weather, email, or banking information. In this tutorial, we will …

Mobile Development android kotlin ui
2
10
Member Avatar

Hi everyone. I wana ask to the experianced person that is it possible to make the exact replica of a website's android app ? I mean of I have a site related to novel or books can I make its exact android app? Which later can be published to Play …

Mobile Development mobile
Member Avatar
2
35
Member Avatar

## Introduction ## In this tutorial, we will learn how to use **ConcatAdapter**. It is a great choice for displaying header or footer at the beginning or at the end of a **RecyclerView**. ## Goals ## At the end of the tutorial, you would have learned: 1. How to use …

Mobile Development android kotlin
2
27
Member Avatar

## Introduction ## Rather than modifying the button widget’s appearance in code, it is possible to do this in an XML resource instead. In this tutorial, we will learn how to create two different types of specialized XML resource files for changing the **Drawable** and the color. ## Goals ## …

Mobile Development android kotlin
2
18
Member Avatar

## Introduction ## The Android platform provides many different types of menus to be added to an Android app. In this tutorial, we will learn how to add the most common type of menu, an **Options Menu**. An **Options Menu** is one that appears at the right corner of the …

Mobile Development android kotlin
1
24
Member Avatar

## Introduction ## The Android platform provides many different types of menus to be added to an Android app. In this tutorial, we will learn how to add **Contextual Menu**s to our app. ## Goals ## At the end of the tutorial, you would have learned: 1. How to add …

Mobile Development android kotlin
1
15
Member Avatar

## Introduction ## Among all of the Android libraries, Paging 3 is perhaps one of the hardest to understand. Personally, I think the problem with Paging 3 are: 1. Developers need to learn a lot of custom classes before they can understand how Paging 3 works under the hood and …

Mobile Development android kotlin
1
22
Member Avatar

## Introduction ## The Android Paging 3 library can operate in two modes, with an offline Room database as a source of truth or without one. In this tutorial, we will look at how to use Paging 3 with a local Room database. This tutorial expands on the previously published …

Mobile Development android kotlin
1
25
Member Avatar

## Introduction ## Among the many ways to create your own View, extending an existing View is the simplest option. This is because you are inheriting pre-made attributes, drawing, and accessibility features. In this tutorial, we will learn how to create our own custom View by extending an existing View …

Mobile Development android kotlin
2
30
Member Avatar

## Introduction ## In this tutorial, we will learn how to apply Material 3 colors and Dynamic Colors to our App. ## Goals ## At the end of the tutorial, you would have learned: 1. How to apply Material 3 colors. 2. How to enable Dynamic Colors. ## Tools Required …

Mobile Development android kotlin material
2
25
Member Avatar

Hi DW. Anyone who knows how can I achieve this? `List<String> dynamic[i];` The reason why I need this is that I'm creating a dynamic list with nested lists so there's no fixed number of data the list can be, this is inside the `for` statement which receive the json data …

Mobile Development android java list
Member Avatar
0
65
Member Avatar

## Introduction ## In Android development, UseCases are classes that encapsulate business logic that are often used in ViewModel classes. UseCases belong to the optional Domain layer in Android apps, so they are not required, but can reduce your ViewModel’s complexity and make your application easier to test. In this …

Mobile Development android architecture kotlin
2
25
Member Avatar

## Introduction ## When working with WorkManager, it is important to know how to provide input data to your Workers. In this tutorial, we will learn how to provide basic input data to a Worker as well as when Workers are chained together. ## Goals ## At the end of …

Mobile Development android concurrency kotlin
2
20
Member Avatar

## Introduction ## Android provides many ways to perform background tasks, such as Services, WorkManager, or even threads. In this tutorial, we will learn how to create a Service for our Android app. ## Goals ## At the end of the tutorial, you would have learned: 1. How to create …

Mobile Development android kotlin mobile
Member Avatar
2
120
Member Avatar

## Introduction ## If your App only need a simple way to play videos on Android, then **VideoView** (`android.widget.VideoView`) might just fit the bill. In this tutorial, we will learn how to use VideoView for video playback in our App. ## Goals ## At the end of the tutorial, you …

Mobile Development android kotlin mobile
Member Avatar
2
53
Member Avatar

## Introduction ## When using a Worker (**from the WorkManager library**), you might have wondered how to inject dependencies with Hilt. In this tutorial, we will learn how to inject dependencies into our Worker. ## Goals ## At the end of the tutorial, you would have learned: 1. How to …

Mobile Development android kotlin
1
30
Member Avatar

## Introduction ## Finding a View in Espresso tests can be quite confusing because there are so many matchers available. In this tutorial, we will learn how to find a View based on its sibling contents. ## Goals ## At the end of the tutorial, you would have learned: 1. …

Mobile Development android kotlin testing
1
21
Member Avatar

I'm broadcasting an intent in my app and receiving it with a broadcast receiver. I can handle the broadcasting and receiving. No problem with that. However, I want to register the receiver completely programmatically instead of doing it in the manifest file. Notice, that in the manifest file, there are …

Mobile Development android android-development java
Member Avatar
0
30
Member Avatar

## Introduction ## When working with Room, you might have wondered how to run multiple statements in a single transaction. Running multiple statements in one transaction has two main benefits: 1. Your statements can reuse the same connection. 2. They can all fail together if something goes wrong. Regarding the …

Mobile Development android database kotlin
1
20
Member Avatar

## Introduction ## When working with Room, you might have wondered how to describe one-to-many relationships between entities. In this tutorial, we will learn how to do just that. ## Goals ## At the end of the tutorial, you would have learned: 1. How to define one-to-many relationship for entities …

Mobile Development android database kotlin
1
19
Member Avatar

## Introduction ## There are many ways to describe relationships between Entities in Room, one of which is to embed an entity inside of another. When embedding an Entity, the columns of the embedded Entity are extracted as member columns of the enclosing entity. In this tutorial, we will learn …

Mobile Development android database kotlin
1
47
Member Avatar

## Introduction ## When working with Services on Android, you might have ran into an issue where you would like to: 1. Use a concrete implementation of a Service (*from a built-in or third party library*). 2. Make the Service lifecycle-aware so that you can use coroutines with it. Many …

Mobile Development android kotlin mobile
1
112
Member Avatar

## Introduction ## When working with Room, there might come a situation during bulk CRUD operations that it would be useful to add a Foreign Key to one of our tables. This provides two main benefits: cascading delete (*must be configured manually*) and enforcing data integrity on linked entities. In …

Mobile Development androiid database kotlin
2
55
Member Avatar

## Introduction ## When working with music files, you might have wondered how to load display art from Audio files. In this tutorial, we will learn how to load thumbnails for audio files. ## Goals ## At the end of the tutorial, you would have learned: 1. How to load …

Mobile Development android kotlin mobile
2
112
Member Avatar

## Introduction ## If your Android Application uses Room, then you might have wondered how to prepopulate a Room database. In this tutorial, we will learn how to prepopulate a Room database. ## Goals ## At the end of the tutorial, you would have learned: 1. How to prepopulate a …

Mobile Development android database kotlin
1
28
Member Avatar

## Introduction ## When working with Hilt, you might have wondered how to inject ViewModels into your application. In this tutorial, we will learn how to inject ViewModels into your app Fragments. ## Goals ## At the end of the tutorial, you would have learned: 1. How to inject ViewModels …

Mobile Development android kotlin mobile
4
164
Member Avatar

## Introduction ## In Android development, reusable layouts can be used to reduce duplicate code across XML files. In this tutorial, we will learn how to reuse layout files, especially with View Binding enabled. ## Goals ## At the end of the tutorial, you would have learned: 1. How to …

Mobile Development android kotlin mobile
2
63
Member Avatar

## Introduction ## MediaPlayer (`android.media.MediaPlayer`) is a popular way to play media files, and combining it with a SeekBar can greatly improve the user experience. In this tutorial, we will learn how to synchronize a MediaPlayer progress to a SeekBar position. ## Goals ## At the end of the tutorial, …

Mobile Development android kotlin mobile
2
75
Member Avatar

## Introduction ## When working with a Room database, we are mostly restricted to save data using primitives (*and boxed primitives*). Reference types are not supported right out of the box, but can be enabled by creating additional [TypeConverter](https://developer.android.com/reference/androidx/room/TypeConverter). If you are familiar with ORM-light frameworks such as Spring JDBC, …

Mobile Development android database kotlin
2
89

The End.