Module 3 of 3 in Create a Multiscreen App in Android

Save User State

Sep 10 2024, Kotlin 1.9, Android 14, Android Studio Koala | 2024.1.1
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Saving user state is a critical aspect of Android development. This module will cover the different persistence mechanisms available, including DataStore, Android Files, and Room Database, and how to select the appropriate one based on a given situation. Learners will learn how to save simple data using DataStore, understand the different types of storage available on Android, save and read data from Android Files, and work with Room Database to perform CRUD operations. By Harun Wangereka.

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EXPERIENCE
Intermediate level
EST TIME TO COMPLETE
1 hr, 52 mins
CONTENT
6 lessons
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Module outcomes

  • Understand the difference between all the persistence mechanisms on Android
  • Able to determine a persistence mechanism based on a situation
  • Save simple data using DataStore
  • Understand the different types of storage available on Android, explore permissions, and the purpose of scoped storage.
  • Save and read data from Android Files
  • Understand Room Database, its components, and how to create a database and perform CRUD operations on it.

Covered concepts

  • DataStorage
  • Storage permissions
  • Internal and external storage
  • Android Files
  • Room

Module content

1
Save Simple Data Lesson (21 mins)

In this lesson, you’ll learn how to save simple data using DataStore. You’ll also learn the difference between DataStore and SharedPreferences and how to save and read data from DataStore.

 Start
Introduction • Start Reading · 1 min
Introduction to DataStore Storage Solution Reading · 5 mins
Demo: Create & Setup DataStore Video · 2 mins
Write Data to DataStore Reading · 3 mins
Demo: Write Data to DataStore Video · 4 mins
Read Data from DataStore Reading · 2 mins
Demo: Read Data from DataStore Video · 2 mins
Conclusion Reading · 1 min
Quiz: Save Simple Data 6 questions
2
Understand App Storage Lesson (11 mins)

In this lesson, you’ll learn about the different types of storage available on Android, including internal and external storage. You’ll also learn about permissions and scoped storage and the purpose of shared storage.

 Start
Introduction • Start Reading · 1 min
Instruction Reading · 9 mins
Conclusion Reading · 1 min
Quiz: Understand App Storage 6 questions
3
Read & Write Files Lesson (27 mins)

In this lesson, you’ll learn how to save data to Android Files and read data from Android Files.

 Start
Introduction • Start Reading · 1 min
Instruction Reading · 8 mins
Read & Write Files in Internal Storage Video · 10 mins
Read & Write Files in External Storage Video · 8 mins
Conclusion Reading · 1 min
Quiz: Read & Write Files 4 questions
4
Define a Room Database Lesson (11 mins)

In this lesson, you’ll learn how to define a Room database, including the purpose of a Room database, the components of a Room database, and how to create a database.

 Start
Introduction • Start Reading · 1 min
Instruction Reading · 6 mins
Demo Video · 3 mins
Conclusion Reading · 1 min
Quiz: Define a Room Database 6 questions
5
Set up a Room Database Lesson (23 mins)

In this lesson, you’ll learn how to set up a Room database, including how to create tables, entities, and DAOs.

 Start
Introduction • Start Reading · 1 min
Introduction to Tables & Entities Reading · 7 mins
Demo: Creating Entities Video · 2 mins
Introduction to Data Access Objects Reading · 10 mins
Demo: Creating DAOs Video · 3 mins
Conclusion Reading · 1 min
Quiz: Setup a Room Database 6 questions
6
CRUD Operations Lesson (19 mins)

In this lesson, you’ll learn about CRUD operations in Room databases, including creating, reading, updating, and deleting data.

 Start
Introduction • Start Reading · 1 min
Instruction Reading · 5 mins
Demo: Create & Read Notes from Room Database Video · 6 mins
Demo: Update & Delete Notes from Room Database Video · 7 mins
Conclusion Reading · 1 min
Quiz: CRUD Operations 4 questions