~/talk

DataStore Preferences and migrating from SharedPreferences

on YouTube 30m
Talkat droidcon Berlin 2021 · 2021-10-20..10-22· [android]

speaker

name:Hitesh Das
links:none on file

resources

video:https://youtu.be/b4Ab3GwX160
slides:none on file

summary

DataStore replaces SharedPreferences for small key/value needs, using Kotlin coroutines and Flow on Dispatchers.IO to avoid UI blocking, and signals IO errors instead of failing silently. Two implementations exist: Proto DataStore (typed via protocol buffers, schema in app/src/main/proto, file like settings.pb, serializer + builder API) and Preference DataStore (simple key/value). A provided shared preferences migration helper and customizable mapper move legacy keys into the new store; production migrations report seamless results when mapper code is correct. Version noted: data-store-core 1.0.0.

AI-written summary · about

chapters (14)

  1. 0:00Introduction and agenda
  2. 1:51Why replace SharedPreferences
  3. 5:04DataStore benefits overview
  4. 8:42Setting up DataStore
  5. 10:26Preference DataStore basics
  6. 12:55Proto DataStore setup
  7. 13:39Defining Proto schema
  8. 16:16Proto DataStore operations
  9. 19:21Migrating from SharedPreferences
  10. 22:36Simple key-value migration
  11. 24:00Proto DataStore migration
  12. 27:12Synchronous access methods
  13. 28:58Summary and future outlook
  14. 30:21Q&A

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