如何从调用者Kotlin指定的lambda中解除DialogFragment

我从下面的片段运行GirlQualitiesChoiceDialog：

girlType.setOnClickListener { GirlQualitiesChoiceDialog.show(activity, InitialDataSet.instance.QUALITY_TYPE_COLOR){ Picasso.with(context).load(it.resId).into(colorTypeImage as ImageView) //GirlQualitiesChoiceDialog.this.dismiss() - need to dismiss the created dialog } } 

在哪里指定侦听器。 我需要的是在我加载图片后关闭对话框。 GirlQualitiesChoiceDialog.this.dismiss（）不起作用。

请问有谁能告诉我，我怎么能解雇GirlQualitiesChoiceDialog在这里？ 假设我需要将对话回调以某种方式传递给lambda，但无法实现。

下面是我的对话框的代码：

 class GirlQualitiesChoiceDialog : DialogFragment() { companion object { val ARG_QUALITY_TYPE = "ARG_QUALITY_TYPE" private lateinit var itemClickInterface: (Quality) -> Unit fun show(activity: Activity, qualityType: Int, itemClick: (Quality) -> Unit) { itemClickInterface = itemClick GirlQualitiesChoiceDialog().apply { arguments = Bundle().apply { putInt(ARG_QUALITY_TYPE, qualityType) } }.show((activity as AppCompatActivity).supportFragmentManager, TAG) } } private lateinit var adapter: QualitiesAdapter override fun onCreateDialog(savedInstanceState: Bundle?): Dialog { val choiceDialogView = activity.getLayoutInflater().inflate(horizontal_list_view, null) val layoutManager = LinearLayoutManager(activity, LinearLayoutManager.HORIZONTAL, false) choiceDialogView.horisontalCardsRecyclerView.setLayoutManager(layoutManager) with(ItemClickSupport.addTo(choiceDialogView.horisontalCardsRecyclerView)) { setOnItemLongClickListener { recyclerView, position, v -> val quality = v.getTag() as Quality; dismiss() true } } var qualityType = arguments.getInt(ARG_QUALITY_TYPE) var title = -1 when (qualityType) { InitialDataSet.instance.QUALITY_TYPE_COLOR -> { title = R.string.choose_color_type adapter = QualitiesAdapter(InitialDataSet.instance.qualities, itemClickInterface) } } choiceDialogView.horisontalCardsRecyclerView.adapter = adapter return AlertDialog.Builder(activity) .setTitle(title) .setView(choiceDialogView) .create() } } 

和适配器

 class QualitiesAdapter(val qualities: List, val itemClick: (Quality) -> Unit) : RecyclerView.Adapter() { override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder { val view = LayoutInflater.from(parent.context).inflate(R.layout.selection_card, parent, false) return ViewHolder(view, itemClick) } override fun onBindViewHolder(holder: ViewHolder, position: Int) { holder.bindForecast(qualities[position]) } override fun getItemCount() = qualities.size class ViewHolder(view: View, val itemClick: (Quality) -> Unit) : RecyclerView.ViewHolder(view) { fun bindForecast(quality: Quality) { with(quality) { Picasso.with(itemView.context).load(resId).into(itemView.selectionImage) (itemView as BaseCardView).setStatusLabel(desc) itemView.setTag(quality) itemView.setOnClickListener { itemClick(this) } } } } 

Answer 1

我建议您从show方法返回对话框的实例，然后在回调中将其解除。

在GirlQualitiesChoiceDialog中更改显示内容，如下所示：

  fun show(activity: Activity, qualityType: Int, itemClick: (Quality) -> Unit): GirlQualitiesChoiceDialog { itemClickInterface = itemClick val dialog = GirlQualitiesChoiceDialog().apply { arguments = Bundle().apply { putInt(ARG_QUALITY_TYPE, qualityType) } } dialog.show((activity as AppCompatActivity).supportFragmentManager, TAG) return dialog } 

这是侦听器代码：

 girlType.setOnClickListener { val dialog = GirlQualitiesChoiceDialog.show(activity, InitialDataSet.instance.QUALITY_TYPE_COLOR) { Picasso.with(context).load(it.resId).into(colorTypeImage as ImageView) dialog.dismiss() } }