SmartPreference

This library makes SharedPreferences convenient.
SmartPreference is Type-safety.

Installation

Add it in your root build.gradle at the end of repositories:

	allprojects {
		repositories {
			...
			maven { url 'https://jitpack.io' }
		}
	}

Add the dependency

	dependencies {
	        implementation 'com.github.watanavex:SmartPreference:x.x.x'
	}

Usage

Implement a subclass of Preference class

class MyPreference(context: Context): Preference(context) {

    // Declares a property

    // If it is a Nonnull type, use a property delegate from the `notnull` function.
    // The argument is the default value.
    var name: String by notnull("no name")

    // If it is a Nullable type, use a property delegate from the `nullable` function.
    var age: Int? by nullable<Int?>()

}

For example, if you use it from an activity ...

class MainActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        val pref = MyPreference(context = this)
        pref.name = "susan"
        pref.age = null

        val myName = pref.name
    }
}