在另一个 RecyclerView 中插入一个 RecyclerView
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【中文标题】在另一个 RecyclerView 中插入一个 RecyclerView【英文标题】：Insert a RecyclerView inside another RecyclerView 【发布时间】：2017-03-18 05:02:44 【问题描述】：我正在用 Google Now Cards 的风格创建一组 5 张卡片。我首先关注的是总体布局。
我正在使用 CardView 和 RecyclerView，我想要实现的是这样的：
这是我的 CardAdapter（也是通用适配器）：
public class CardAdapter extends RecyclerView.Adapter<CardAdapter.cardViewHolder>
private ArrayList<Card> item;
public CardAdapter(ArrayList<Card> item)
this.item = item;
@Override
public cardViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.card_layout,parent,false);
cardViewHolder card = new cardViewHolder(v);
return card;
@Override
public void onBindViewHolder(cardViewHolder holder, int position)
holder.titel.setText(item.get(position).getTitel());
holder.card_icon.setImageResource(item.get(position).getIcon());
holder.load_more.setText("Load more");
@Override
public int getItemCount()
return item.size();
public static class cardViewHolder extends RecyclerView.ViewHolder
TextView titel;
ImageView card_icon;
RecyclerView list_content;
TextView load_more;
public cardViewHolder(View itemView)
super(itemView);
titel = (TextView)itemView.findViewById(R.id.titel);
card_icon = (ImageView)itemView.findViewById(R.id.card_icon);
load_more = (TextView)itemView.findViewById(R.id.loadmore);
list_content = (RecyclerView)itemView.findViewById(R.id.list_content);
这是 MensaCardAdapter（第一张卡的适配器，据我所知，每张卡都应该有一个特定的适配器，因为它们都有不同的布局）
public class MensaCardAdapter extends RecyclerView.Adapter<MensaCardAdapter.MensaViewHolder>
private List<MensaRow> items;
public MensaCardAdapter(List<MensaRow> items)
this.items = items;
@Override
public MensaViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.mensa_row,parent,false);
return new MensaViewHolder(v);
@Override
public void onBindViewHolder(MensaViewHolder holder, int position)
holder.content.setText(items.get(position).getMensa_row_content());
holder.img.setImageResource(items.get(position).getMensa_row_img());
holder.title.setText(items.get(position).getTitel());
@Override
public int getItemCount()
return items.size();
public class MensaViewHolder extends RecyclerView.ViewHolder
private ImageView img;
public TextView title;
public TextView content;
public MensaViewHolder(View itemView)
super(itemView);
img = (ImageView)itemView.findViewById(R.id.mensa_row_img);
title = (TextView)itemView.findViewById(R.id.mensa_row_title);
content = (TextView)itemView.findViewById(R.id.mensa_row_content);
这是 CardLayout（适用于所有卡片）
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_
android:layout_
card_view:cardCornerRadius="4dp"
card_view:cardElevation="4dp"
android:padding="15dp"
android:layout_margin="5dp">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_
android:layout_>
<ImageView
android:id="@+id/card_icon"
android:layout_
android:layout_
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="15dp"
android:layout_marginTop="15dp" />
<TextView
android:id="@+id/titel"
android:layout_
android:layout_
android:text="Card Title"
android:textSize="18dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:layout_alignTop="@+id/card_icon"
android:layout_alignLeft="@+id/list_content"
android:layout_alignStart="@+id/list_content"
android:layout_marginLeft="18dp"
android:layout_marginStart="18dp" />
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/list_content"
android:layout_
android:layout_
android:scrollbars="vertical"
android:layout_alignParentTop="true"
android:layout_toRightOf="@+id/card_icon"
android:layout_toEndOf="@+id/card_icon" />
<TextView
android:id="@+id/loadmore"
android:layout_
android:layout_
android:text="Load More"
android:textSize="12dp"
android:textAppearance="?android:attr/textAppearanceLarge"
android:layout_marginLeft="100dp"
android:layout_marginStart="100dp"
android:layout_alignParentBottom="true"
android:layout_alignLeft="@+id/titel"
android:layout_alignStart="@+id/titel"
android:layout_marginBottom="5dp" />
</RelativeLayout>
这是 MensaCardLayout（第一张卡片的布局）
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_
android:layout_>
<ImageView
android:layout_
android:layout_
android:layout_marginLeft="31dp"
android:layout_marginStart="31dp"
android:id="@+id/mensa_row_img"
android:layout_marginTop="22dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true" />
<TextView
android:layout_
android:layout_
android:text="Angebot 1"
android:layout_marginLeft="15dp"
android:layout_marginStart="19dp"
android:id="@+id/mensa_row_title"
android:layout_alignTop="@+id/mensa_row_img"
android:layout_toRightOf="@+id/mensa_row_img"
android:layout_toEndOf="@+id/mensa_row_img" />
<TextView
android:layout_
android:layout_
android:text="Content"
android:layout_below="@+id/mensa_row_title"
android:layout_alignLeft="@+id/mensa_row_title"
android:layout_alignStart="@+id/mensa_row_title"
android:layout_marginTop="18dp"
android:id="@+id/mensa_row_content" />
1- 我可以毫无问题地创建其中没有 RecyclerView 的卡片，但我不知道如何使用 1 个通用 RecyclerView 和 5 个独立且不同的 RecyclerView 编写 activitymain 类。
问题是每张卡片都有不同的布局和不同的内容，我对android很陌生，我真的不明白任何其他复杂的例子
任何帮助将不胜感激
【问题讨论】：
你不应该将 RecyclerView 插入到另一个 RecyclerView 中，这可能会导致很多问题，Google 不建议这样做。你应该找到另一种方式。 你有什么其他推荐的方法吗？ 我觉得你可以把所有的数据放到外层的RecyclerView中，页眉和页脚也可以由外层的RecyclerView管理不同的item类型 【参考方案1】：我研究了在父列表项中呈现列表的一些相同问题。还有另一个question 帮助我解决了这个问题。
希望你能用它解决这个案子。
【讨论】：
【参考方案2】：这个实现是水平网格回收视图在一个 垂直班轮回收器查看
活动
class RecyclerGridActivity : AppCompatActivity()
private lateinit var listAdapter: RecyclerCustomListAdapter
override fun onCreate(savedInstanceState: Bundle?)
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_recycler_grid)
val recyclerListView = findViewById<RecyclerView>(R.id.recyclerCustomList)
listAdapter = RecyclerCustomListAdapter()
recyclerListView.layoutManager = LinearLayoutManager(this@RecyclerGridActivity)
recyclerListView.adapter = listAdapter
recyclerListView.addItemDecoration(TopSpacingItemDecoration(10))
listAdapter.setContent(arrayOf(1,2,3,4), Example.shared.getData(), WeakReference(this))
这是布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_
android:layout_
tools:context=".views.recycler_grid_view.RecyclerGridActivity">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerCustomList"
android:layout_
android:layout_ />
</LinearLayout>
立式衬垫回收器适配器
class RecyclerCustomListAdapter: RecyclerView.Adapter<RecyclerView.ViewHolder>()
private lateinit var items: Array<Int>
private lateinit var data: List<User>
private lateinit var gridAdapter: RecyclerGridAdapter
private lateinit var ctx: WeakReference<Context>
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder
gridAdapter = RecyclerGridAdapter()
return ListViewHolder(
LayoutInflater.from(parent.context).inflate(R.layout.layout_custom_list_item, parent, false)
)
fun setContent(items: Array<Int>, data: List<User>, ctx: WeakReference<Context>)
this.items = items
this.data = data
this.ctx = ctx
override fun getItemCount(): Int
return items.size
class ListViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
private val recyclerGridView = itemView.findViewById<RecyclerView>(R.id.recyclerGrid)
fun bind(data: List<User>, adapter: RecyclerGridAdapter, ctx: WeakReference<Context>)
recyclerGridView.layoutManager = GridLayoutManager( ctx.get(), 1, GridLayoutManager.HORIZONTAL, false)
recyclerGridView.adapter = adapter
recyclerGridView.addItemDecoration(TopSpacingItemDecoration(10))
adapter.setContent(data)
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int)
when (holder)
is ListViewHolder->
holder.bind(data, gridAdapter, ctx)
这是布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_
android:layout_
android:orientation="vertical">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerGrid"
android:layout_
android:layout_
android:background="#4CAF50" />
</LinearLayout>
水平网格回收器适配器
class RecyclerGridAdapter: RecyclerView.Adapter<RecyclerView.ViewHolder>()
private lateinit var items: List<User>
override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder
return GridViewHolder(
LayoutInflater.from(parent.context).inflate(R.layout.layout_legacy_grid_item, parent, false)
)
override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int)
when (holder)
is GridViewHolder ->
holder.bind(items[position])
fun setContent(items: List<User>)
this.items = items
override fun getItemCount(): Int
return items.size
class GridViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView)
private val emailLabel = itemView.findViewById<TextView>(R.id.legacyGridEmail)
fun bind(user: User)
emailLabel.text = user.email
这是布局
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_
android:layout_
app:cardCornerRadius="10dp"
app:cardElevation="5dp">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_
android:layout_>
<ImageView
android:id="@+id/imageView2"
android:layout_
android:layout_
android:layout_marginStart="32dp"
android:layout_marginTop="32dp"
android:layout_marginEnd="32dp"
android:layout_marginBottom="60dp"
android:scaleType="fitCenter"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:srcCompat="@android:drawable/presence_away" />
<TextView
android:id="@+id/legacyGridEmail"
android:layout_
android:layout_
android:layout_marginTop="16dp"
android:layout_marginBottom="16dp"
android:text="Email"
android:textSize="20sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/imageView2" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>
数据类
类示例私有构造函数()
companion object
//single instance
val shared: Example by lazy Example()
fun getData() : List<User>
return listOf(
User("malithdulan7@gmail.com", "malith", "url"),
User("malithdulan7@gmail.com", "malith", "url"),
User("malithdulan7@gmail.com", "malith", "url"),
User("malithdulan7@gmail.com", "malith", "url"),
User("malithdulan7@gmail.com", "malith", "url")
)
【讨论】：
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