ObjectPropertyDelegate for Kotlin class properties & functions.
Suppose you have a class called Wrapped which owns some properties and functions.
class Wrapped(var x: Boolean) {
val z = 10L
fun setY(y: Int) {
}
fun getY() = 12
}Now you want to wrap it into another class called Wrapper, and you may need to delegate properties or functions with properties declared in Wrapper.
You can use this library to handle that easily.
class Wrapper {
private val wrapped: Wrapped = Wrapped(false)
var x by wrapped::x.delegator()
var y by wrapped::setY.delegator(defaultValue = 0)
val yGetter by wrapped::getY.delegator()
val z by wrapped::z.delegator()
}For those who want to delegate lazy initialized properties, such as:
class MainActivity: Activity() {
// This would lead to null pointer exception.
val name by delegateOf(TextView::getText, TextView::setText, textView)
// or
val name by delegateOf(textView::getText, textView::setText)
}nameView may be initialized after the content view setting up, so we need a lazy delegate for that:
class MainActivity: Activity() {
val name by delegateLazyOf(TextView::getText, TextView::setText) { textView }
}Only accessing nameView when name is accessed.
Works like a charm.
It has been deployed to jCenter.
implementation("com.bennyhuo.kotlin:delegates:1.0")
Please feel free to issue and pull request.
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