lateinit属性ABC尚未初始化

Question

点击我在recyclerView中实现的按钮后，它属于activity_main.xml(MainActivity类(，其工作是切换活动(MainActivity->EmployeeActivity(，下面显示了一个问题。我将感谢每一个提示。

错误：

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.ing, PID: 31027
kotlin.UninitializedPropertyAccessException: lateinit property context has not been initialized
at com.example.ing.adapter.MyAdapter.getContext(MyAdapter.kt:20)
at com.example.ing.adapter.MyAdapter$onBindViewHolder$1.onClick(MyAdapter.kt:37)
at android.view.View.performClick(View.java:7125)
at android.view.View.performClickInternal(View.java:7102)
at android.view.View.access$3500(View.java:801)
at android.view.View$PerformClick.run(View.java:27336)
at android.os.Handler.handleCallback(Handler.java:883)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7356)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)

MyAdapter类：

class MyAdapter :RecyclerView.Adapter<MyAdapter.MyViewHolder>(){
lateinit var context:Context
private var myList = emptyList<Data>()
inner class MyViewHolder(itemView: View):RecyclerView.ViewHolder(itemView)

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
return MyViewHolder(LayoutInflater.from(parent.context).inflate(R.layout.layout_employee_item, parent, false))
}
override fun getItemCount(): Int {
return myList.size
}
override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
holder.itemView.tvEmployeeName.text = myList[position].employeeName
holder.itemView.showButton.setOnClickListener{
val intent = Intent(context.applicationContext,EmployeeActivity::class.java)
intent.putExtra("id", position)
context.startActivity(intent)
}
}
fun setData(newList:List<Data>){
myList = newList
notifyDataSetChanged()
}
}

Answer 1

您声明了lateinit var context:Context变量，但没有为其分配任何上下文值。您应该先分配一个值，然后使用它。