StorageStrategy

Added in 1.0.0

Kotlin |Java

public abstract class StorageStrategy<K>

Strategy for storing keys in saved state. Extend this class when using custom key types that aren't supported by default. Prefer use of builtin storage strategies: createStringStorage, createLongStorage, createParcelableStorage.

See SelectionTracker.Builder for more detailed advice on which key type to use for your selection keys.

Parameters
`<K>`	Selection key type. Built in support is provided for String, Long, and Parcelable types. Use the respective factory method to create a StorageStrategy instance appropriate to the desired type. `createStringStorage`, `createParcelableStorage`, `createLongStorage`

Summary

Public constructors
`StorageStrategy(@NonNull Class<K> type)` Creates a new instance.

Public methods
`abstract @NonNull Bundle`	`asBundle(@NonNull Selection<K> selection)` Creates a `Bundle` from supplied `Selection`.
`abstract @Nullable Selection<K>`	`asSelection(@NonNull Bundle state)` Create a `Selection` from supplied `Bundle`.
`static @NonNull StorageStrategy<Long>`	`createLongStorage()`
`static @NonNull StorageStrategy<K>`	`<K extends Parcelable> createParcelableStorage(@NonNull Class<K> type)`
`static @NonNull StorageStrategy<String>`	`createStringStorage()`

Added in 1.0.0

public StorageStrategy(@NonNull Class<K> type)

Creates a new instance.

Parameters
`@NonNull Class<K> type`	the key type class that is being used.

Added in 1.0.0

public abstract @NonNull Bundle asBundle(@NonNull Selection<K> selection)

Creates a Bundle from supplied Selection.

Parameters
`@NonNull Selection<K> selection`	The selection to asBundle.

Added in 1.0.0

public abstract @Nullable Selection<K> asSelection(@NonNull Bundle state)

Create a Selection from supplied Bundle.

Parameters
`@NonNull Bundle state`	Bundle instance that may contain parceled Selection instance.

Added in 1.0.0

public static @NonNull StorageStrategy<Long> createLongStorage()

Returns
`@NonNull StorageStrategy<Long>`	StorageStrategy suitable for use with `Long` keys.

Added in 1.0.0

public static @NonNull StorageStrategy<K> <K extends Parcelable> createParcelableStorage(@NonNull Class<K> type)

Returns
`@NonNull StorageStrategy<K>`	StorageStrategy suitable for use with `Parcelable` keys (like `android.net.Uri`).

Added in 1.0.0

public static @NonNull StorageStrategy<String> createStringStorage()

Returns
`@NonNull StorageStrategy<String>`	StorageStrategy suitable for use with `String` keys.