④ 嵌套的 object 单例 + JvmStatic 反编译后的 Java 代码 访问时的代码 匿名内部类 使用object 创建匿名内部类 Kotlin 中可以使用object关键字创建匿名内部类: kotlin // 定义匿名内部类的同时还创建了一个对象image.setOnClickListener(object: View.OnClickListener {overridefunonClick(v:View){funA()}})/...
1. companion object 的诞生 Scala 说,要有伴生对象。 于是Kotlin便有了 companion object。 companion object 的出现是为了解决Javastatic 方法的反面向对象(Anti-OOP)的问题。static 方法无法声明为接口,无法被重写——用更学术的话来说,static 方法没有面向对象的消息传递和延迟绑定特性[参考]。而 Scala 为了完成...
object Test1 { fun log(str: String) { Log.d("", str) } // 使用@JvmStatic修饰,在Java中调用staticM方法跟Kotlin中保持一致,Test1.staticM() // 不用在使用Test1.INSTANCE.staticM()这种方式 @JvmStatic fun staticM() { } } // Java中调用 Test1.INSTANCE.log(""); Test1.staticM(); 1....
public Lambda call(Object input) { final Lambda<Lambda> x = (Lambda<Lambda>)input; return f.call(new Lambda<Object>() { @Override public Object call(Object input) { return x.call(x).call(input); } }); } }); } public static void main(String[] args) { Lambda<Lambda> y = yCom...
In Kotlin, there is no static methods, but we can use companion object which works the same as static methods. For example, a class: packagecom.rskimportjava.security.Providerimportjava.security.SecurityclassProviders {//similar as staticcompanion object { ...
类似，你可以为一个已存在的类添加实例方法和属性（不含companion object的 class 暂且不支持 static ...
object WanAndroidRepository { private val wanAndroidService = NetManager.getService(WanAndroidService::class.java) fun getBanners(): Flow<MutableList<Banner>> { //这里如果用flowOf的话,方法上面必须加上suspend关键字 return flow { emit(wanAndroidService.queryBanner()) } } } class IndexViewModel ...
KT-59211 Kapt+JVM_IR: AssertionError on delegating to anonymous object KT-57251 K2: weird error message when trying to instantiate an expect class without explicit constructor KT-58623 Language version 2.0: compiling into common, Native does not report "Protected function call from public-API inlin...
Mocking a function will clear any existing mocks of other functions declared in the same file, equivalent to calling clearStaticMockk on the generated enclosing class.Extension functionsThere are three types of extension function in Kotlin:class-wide object-wide module-wide...
The 'this' keyword inside an extension function corresponds to the receiver object, the one that is passed before the dot. Now we can call such a function on any MutableList<Int> image Smart Casts - When it comes to casts, Kotlin compiler is really intelligent. In many cases, one does ...