如何在自定义对话片段中使用单击侦听器?

Question

class CustomDialogFragment: DialogFragment(){ 
override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
super.onViewCreated(view, savedInstanceState)

val dialogview = LayoutInflater.from(requireActivity()).inflate(R.layout.customdialog, null)
val oktextview = dialogview.findViewById<TextView>(R.id.YES)

oktextview.setOnClickListener {
Log.i("tag","printif it works") //doesn't print
}
}
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
return activity?.let {
val builder = AlertDialog.Builder(it)
val inflater = requireActivity().layoutInflater
builder.setView(inflater.inflate(R.layout.customdialog, null))
builder.create()
} ?: throw IllegalStateException("Activity cannot be null")
}
}

我正在使用自定义对话框，并想使用setOnClickListener自定义对话框的组件。

我把它变成了onViewCreated，但是不工作。

我如何在自定义对话框中实现setOnClickListener为TextView?

Answer 1

您正在为onViewCreated方法创建视图的不同实例。这意味着单击侦听器被设置在不显示给用户的视图上。

你可以这样做:

override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
return activity?.let {
val builder = AlertDialog.Builder(it)
val inflater = requireActivity().layoutInflater
builder.setView(inflater.inflate(R.layout.customdialog, null))
val dialog = builder.create()
val oktextview = dialog.findViewById<TextView>(R.id.YES)

oktextview.setOnClickListener {
Log.i("tag","printif it works") //doesn't print
}
dialog
} ?: throw IllegalStateException("Activity cannot be null")
}

Answer 2

https://developer.android.com/reference/android/app/DialogFragment#alert-dialog

---

根据文档，你不应该实现onCreateView()，只使用onCreateDialog

Answer 3

在onCreateView()方法中调用它而不是onViewCreated()oktextview。setOnClickListener(视图→把());