1. open class LottieUrlKey(url: String) :ILottieKey{
  2.     private var resultKey:String = ""
  4.     companion object{
  5.         const val KEY_PREFIX = "url_"
  6.     }
  7.     init {
  8.         resultKey = KEY_PREFIX + url
  9.     }
  11.     override fun getKey(): String {
  12.         return resultKey;
  13.     }
  14. }

子类

  2. class DoubleClickLottieKey extends LottieUrlKey {
  3.     super("http://baidu.com")
  4. }

类似的java代码使用kotlin如何实现呢

  1. class DoubleClickLottieKey : LottieUrlKey {
  2.     constructor(url: String) : super(url)
  4. }