Jetpack DataStoreを消去する
公式に良いのが見つからなかったのでメモ
- Preferences DataStore
// 消去
context.dataStore.edit { it.clear() }
// 定義
val Context.dataStore by preferencesDataStore(name = "settings")
- Proto DataStore
// 消去
context.datastore.updateData { it.toBuilder().clear().build() }
// 定義
object SettingsSerializer : Serializer<Settings> {
override val defaultValue: Settings = Settings.getDefaultInstance()
override suspend fun readFrom(input: InputStream): Settings {
try {
return Settings.parseFrom(input)
} catch (exception: InvalidProtocolBufferException) {
throw CorruptionException("Cannot read proto.", exception)
}
}
override suspend fun writeTo(
t: Settings,
output: OutputStream) = t.writeTo(output)
}
val Context.settingsDataStore: DataStore<Settings> by dataStore(
fileName = "settings.pb",
serializer = SettingsSerializer
)
android - How to clear jetpack datastore data on specific condition - Stack Overflow
- Proto DataStore
https://developer.android.com/topic/libraries/architecture/datastore#proto-create
- codelab
