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  • 我正在尝试在 viewpager2 的每个布局中创建一个 RecyclerView

  • 对于 viewpager2 我正在使用 RecyclerView 适配器来膨胀布局

1.主要布局 

<androidx.viewpager2.widget.ViewPager2
        android:id="@+id/id_view_pager"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/id_settings_package_tab_layout" />

2.我正在调用适配器

id_view_pager.adapter = MultiViewAdapter(this, list)

3. 多视图适配器

override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
        when (viewType) {
            R.layout.fragment_pkg_set_type -> {
                var view: View = layoutInflater.inflate(R.layout.fragment_layout, parent, false)
                Log.d("log", "onCreateViewHolder : Layout inflating is called")
                return ViewHolder1(view)
            }
            else -> {
                var view: View =
                    layoutInflater.inflate(R.layout.fragment_layout_others, parent, false)
                return ViewHolder2(view)
            }
        }
    }

4. 片段布局

<androidx.recyclerview.widget.RecyclerView
        android:id="@+id/id_pkg_set_type_list_rv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:listitem="@layout/fragment_pkg_type_list_ui"/>

    <EditText
        android:id="@+id/id_pkg_type_value"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:gravity="center_horizontal"
        android:hint="Add Type"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/id_pkg_type_add"
        app:layout_constraintStart_toStartOf="parent" />
  • 现在我得到了所有膨胀的布局并且EditText是可见的
  • 现在为了加载 RecyclerView 我又写了一个文件对应fragment_layout文件

5.LayoutFragment.kt

override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        var myDataset = arrayOf("one", "two", "three", "four", "five")
        var viewManager = LinearLayoutManager(context)
        var viewAdapter = PackageTypeAdapter(context, myDataset)

        viewManager.orientation = LinearLayoutManager.VERTICAL
        id_pkg_set_type_list_rv.setHasFixedSize(true)
        id_pkg_set_type_list_rv.layoutManager = viewManager
        id_pkg_set_type_list_rv.adapter = viewAdapter

        viewAdapter.notifyDataSetChanged()
    }

    class PackageTypeAdapter(context: Context?, data: Array<String>) :
        RecyclerView.Adapter<PackageTypeAdapter.MyViewHolder>() {

        var mData: Array<String>

        override fun onCreateViewHolder(
            parent: ViewGroup,
            viewType: Int
        ): PackageTypeAdapter.MyViewHolder {
            var layoutInflater = LayoutInflater.from(parent.context)
            var view = layoutInflater.inflate(R.layout.fragment_pkg_type_list_ui, parent, false)
            return MyViewHolder(view)
        }

        override fun getItemCount(): Int {
            return mData.size
        }

        override fun onBindViewHolder(holder: PackageTypeAdapter.MyViewHolder, position: Int) {
            holder.text_value.text = mData[position]
        }

        inner class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
            var text_value: TextView

            init {
                text_value = itemView.findViewById(R.id.id_text_value)
            }
        }

        init {
            mData = data
        }

    }
  • 不幸的是它没有读取这个文件
  • 所以，我没有得到 RecyclerView 列表

如何将嵌套的 RecyclerView 加载到使用 RecyclerView 将布局膨胀到 viewpager2 的 Viewpager2 中？

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1 回答 1

2

我觉得你很困惑。这就是你创造的原因LayoutFragment.kt

您必须删除该文件并添加

is ViewHolder1 -> {
                var myDataset = arrayOf("one", "two", "three", "four", "five")
                var viewManager = LinearLayoutManager(ctx)
                var viewAdapter = PkgSetTypeFragment.PackageTypeAdapter(ctx, myDataset)

                viewManager.orientation = LinearLayoutManager.VERTICAL
                holder.id_pkg_set_type_list_rv.setHasFixedSize(true)
                holder.id_pkg_set_type_list_rv.layoutManager = viewManager
                holder.id_pkg_set_type_list_rv.adapter = viewAdapter

                viewAdapter.notifyDataSetChanged()

                holder.imageButton.setOnClickListener(View.OnClickListener {

                })
            }
            is ViewHolder2 -> holder.myTextView.text = mData[position]

内部视图绑定持有者文件。

于 2020-02-20T10:05:16.630 回答