TypedSharedPreferences

By specifying type parameters for the keys you define, you can avoid typing mistakes when saving to SharedPreferences.

Installation

implementation 'io.github.ergooo:TypedSharedPreferences:0.0.2'

Code examples

Define keys with type parameter.

sealed class Keys {
    object Name : Key<String>
    object Age : Key<Int>
    object Birthday : Key<Long>
    object SyncRate : Key<Float>
    object HasIdCard : Key<Boolean>
    object Friends : Key<Set<String>>
}

You can pass key / value pairs as Entry.

val typedSharedPreferences = TypedSharedPreferences(preferences)
typedSharedPreferences.putString(Entry(Keys.Name, "Shinji"))

If you specify a value other than String for Keys.Name, the compiler will tell you an error. If you specify a key with a non-String parameter (such as Keys.Age) as the parameter for the putString() or getString(), compiler will tell you an error.