Question

我想在创建“匿名内部类”时访问调用类的范围在Kotlin。什么是Java OuterScope.this语法的等价物？例如：

open class SomeClass {
    open fun doSomething() {
        // ...
    }
}

class MyClass {
    fun someFunc() {
        object : SomeClass() {
            override fun doSomething() {
                super<SomeClass>.doSomething()
                // Access the outer class context, in Java
                // this would be MyClass.this
            }
        }
    }
}

Answer 1

this@MyClass

JFYI：访问扩展函数接收器的语法相同：

fun MyClass.foo() {
    // in some nested thing:
    this@foo
    //...
}

Kotlin参考：This expressions

Answer 2

在我的情况下，我访问它：/** * @var Notification[]|ArrayCollection */ public function getAllNotifications() { return new ArrayCollection( array_merge( $this->sentNotifications->toArray(), $this->receivedNotifications->toArray() ) ); }

this@MainActivity

Kotlin外围

2 个答案: