Parameter specified as non-null is null method kotlin.jvm.internal.Intrinsics.checkNotNullParameter

2024-06-05 01:40:45

问题描述

Android 的 Java代码通过Android Studio自动化转换Kotlin报错

java.lang.NullPointerException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkNotNullParameter, parameter convertView

出现的地方

在编写ListVIew的适配器时，覆写BaseAdapter的 getView() 出现问题

修改之后

override fun getView(position: Int, convertView: View?, parent: ViewGroup): View { }

类似的问题

activity从Java转成Kotlin之后，发生以下错误，目标指向不明：

java.lang.IllegalArgumentException: Parameter specified as non-null is null: method kotlin.jvm.internal.Intrinsics.checkParameterIsNotNull, parameter savedInstanceState

问题原因：activity的onCreate方法中savedInstanceState为非null元素。

 @Overrideprotected void onCreate(@NonNull Bundle savedInstanceState) {super.onCreate(savedInstanceState);}

解决问题：用kotlin重写的时候，也要是非null元素。

override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)
}

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