20 lines
594 B
Kotlin
20 lines
594 B
Kotlin
package cash.z.ecc.android.sdk.demoapp.preference.api
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import cash.z.ecc.android.sdk.demoapp.preference.model.entry.Key
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import kotlinx.coroutines.flow.Flow
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interface PreferenceProvider {
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suspend fun hasKey(key: Key): Boolean
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suspend fun putString(key: Key, value: String?)
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suspend fun getString(key: Key): String?
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/**
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* @return Flow to observe potential changes to the value associated with the key in the preferences.
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* Consumers of the flow will need to then query the value and determine whether it has changed.
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*/
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fun observe(key: Key): Flow<Unit>
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}
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