Question

在某些情况下是否有可能规避可观察的代表？

用例：

val ls: ArrayList<SomeType> by Delegates.observable(arrayListOf()) {
    _, _, new ->
    if (someCondition) {
        usesList(new)
        // I want to reset ls to arrayListOf(), but without the invocation of the observable delegate.
    }
}

Answer 1

当然......你必须在你的课程路径中有kotlin反射。而且我不建议使用它。：）

val delegatedProperties = D::class.java.getDeclaredField("\$\$delegatedProperties").get(d) as Array<KProperty<*>>
(delegatedProperties.find { it.name == "ls" } as KMutableProperty<*>).setter.call(arrayListOf<Any>())

规则可观察的代表

1 个答案: