properties - Kotlin 吸气二传手没有领域

Question

我想创建一个没有字段的getter和setter。目前，我具有此功能:

/** Only the color component will be considered, alpha has no effect */ 
fun setCircleColor(@ColorInt color : Int){
    circlePaint.color = ColorUtils.setAlphaComponent(color, circlePaint.alpha)
}

理想情况下，我想要这样的东西

circleColor: @ColorInt Int 
  get(){
    return circlePaint.color
  set(value){
    circlePaint.color = ColorUtils.setAlphaComponent(color, circlePaint.alpha)
  }

如您所见，我不想将circleColor存储在var中，但是仍然可以调用
myView.color = 0xFFaaaaaa而不是 myView.setColor(0xFFaaaaaa)。这可能吗？

Answer 1

我建议按照您打算的方式实施它:

var circleColor: Int
    @ColorInt get() = circlePaint.color
    set(@ColorInt color) {
        circlePaint.color = ColorUtils.setAlphaComponent(color, circlePaint.alpha)
    }