自定義ListviewsetonItemClickListner在DialogFragment中使用kotlin中的Viewbinding不起作用

單擊 TextView 打開 DialogFragment。DialogFragment 中設定的自定義 Listview。在 textview 中設定的 Listview 專案。Listview 中的資料集，但是當單擊 listview 專案時沒有任何回應，但是當我們單擊 listview 專案文本時，會給出錯誤“java.lang.ClassCastException：java.lang.Integer cannot be cast model.Serve”

MainActivity.kt

binding.tvProductServeno.setOnClickListener {
           var dialogC = CustomDialog(serveNo)

            dialogC.show(supportFragmentManager,"customDialog")
 }

自定義對話框.kt

class CustomDialog(val servList: ArrayList<Serve>) : DialogFragment() {

    private val TAG = "CustomDialog"

    interface OnInputListener {
        fun sendInput(input: String?)
    }

    var mOnInputListener: OnInputListener? = null

    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
        val inflater = context?.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
        val binding = DialogListViewBinding.inflate(inflater)

        val builder = AlertDialog.Builder(requireContext())
        val servAdapter = DialogListAdapter(servList, requireContext())
        binding.listViewDialog.adapter = servAdapter
        servAdapter.notifyDataSetChanged()
        val dialog = builder.create()
        dialog.show()

        binding.listViewDialog.setOnItemClickListener { adapterView, view, i, l ->

            val serve = adapterView.getItemAtPosition(i) as Serve

            val serve1 = serve.serveNo

           /* (activity as AddProduct?)..setText(input)*/
            mOnInputListener?.sendInput(serve1.toString())

            dialog.dismiss()
            Toast.makeText(requireContext(), serve1.toString(), Toast.LENGTH_LONG).show()
        }


        return binding.root
    }

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        return super.onCreateDialog(savedInstanceState)
    }


    override fun onAttach(context: Context) {
        super.onAttach(context)

        try {
            mOnInputListener = activity as OnInputListener?
        } catch (e: ClassCastException) {
            Log.e(TAG, "onAttach: ClassCastException: "   e.message)
        }
    }
}

串列視圖中的資料顯示。當單擊 Listview 專案時，它不會給出任何回應。Listview item 值未在 textview 中設定，但單擊 listview 專案文本會給出錯誤 ClassCastException。

DialogListAdapter.kt

class DialogListAdapter (val servNo : ArrayList<Serve>,val context: Context) : BaseAdapter() {
    override fun getCount(): Int {
        return  servNo.size
    }

    override fun getItem(p0: Int): Any {
        return p0
    }

    override fun getItemId(p0: Int): Long {
        return  p0.toLong()
    }

    override fun getView(p0: Int, p1: View?, p2: ViewGroup?): View {
        val inflater = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
        val binding = DialogListItemBinding.inflate(inflater)

        //val serve = getItem(p0) as Serve

        val ser = servNo.get(p0)
        binding.tvListViewDialogItem.text = ser.serveNo

        return binding.root
    }
}

uj5u.com熱心網友回復：

嘗試將getItem 函式更改DialogListAdapter為：

override fun getItem(p0: Int): Serve = servNo[p0]

標籤：科特林 列表显示 android-dialogfragment 基本适配器

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