TabBar片段中的RecyclerView
[英]RecyclerView inside Fragment from TabBar
问题描述
I got a small problem. 
我有一个小问题。
I tried to load a recycler view with some card. 我试图用一些卡加载回收者视图。
Without the recycler view the fragment works and I got the card displayed, but since I added the recyclerView I keep getting error about it. 没有回收站视图，片段将起作用，并且显示了卡，但是由于我添加了回收站视图，因此不断出现错误。
FATAL EXCEPTION: main Process: com.example.pierre.all, PID: 1729 android.view.InflateException: Binary XML file line #24: RecyclerView has no LayoutManager at android.view.LayoutInflater.inflate(LayoutInflater.java:539) at android.view.LayoutInflater.inflate(LayoutInflater.java:423) at com.example.pierre.all.Categories$PlaceholderFragment.onCreateView(Categories.java:131) at android.support.v4.app.Fragment.performCreateView(Fragment.java:1974) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1067) at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1252) at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:742) at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1617) at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:570) at android.support.v4.app.FragmentPagerAdapter.finishUpdate(FragmentPagerAdapter.java:141) at android.support.v4.view.V
This is my fragment_categories_favorites.xml 这是我的fragment_categories_favorites.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="layout.Categories_favorites">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/list"
android:scrollbars="vertical">
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_view"
android:layout_width="120dp"
android:layout_height="120dp"
card_view:cardCornerRadius="4dp"
android:background="@drawable/background">
<TextView
android:id="@+id/info_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="SHOP"
android:textSize="20sp"
android:gravity="center" />
<TextView
android:id="@+id/info_text2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="25 items"
android:layout_marginTop="40dp"
android:gravity="center"
android:textSize="12sp"
/>
</android.support.v7.widget.CardView>
</android.support.v7.widget.RecyclerView>
</FrameLayout>
My Categories_favorites.java 我的Categories_favorites.java
public class Categories_favorites extends Fragment {
private static final String TAG = "RecyclerViewFragment";
public Categories_favorites() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_categories_favorites, container, false);
rootView.setTag(TAG);
RecyclerView rv = (RecyclerView) rootView.findViewById(R.id.list);
LinearLayoutManager manager = new LinearLayoutManager(getActivity());
manager.setOrientation(LinearLayoutManager.VERTICAL);
rv.setLayoutManager(manager);
//I tried this before instead of the 3 lignes before.
//rv.setLayoutManager(new LinearLayoutManager(getActivity()));
rv.setAdapter(new MyAdapter());
return rootView;
}
}
And this is MyAdaptater.java 这是MyAdaptater.java
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
private final List<Pair<String, String>> characters = Arrays.asList(
Pair.create("Lyra Belacqua", "Brave, curious, and crafty, she has been prophesied by the witches to help the balance of life"),
Pair.create("Pantalaimon", "Lyra's daemon, nicknamed Pan."),
Pair.create("Roger Parslow", "Lyra's friends"),
Pair.create("Lord Asriel", "Lyra's uncle"),
Pair.create("Marisa Coulter", "Intelligent and beautiful, but extremely ruthless and callous."),
Pair.create("Iorek Byrnison", "Armoured bear, Rightful king of the panserbjørne. Reduced to a slave of the human village Trollesund."),
Pair.create("Serafina Pekkala", "Witch who closely follows Lyra on her travels."),
Pair.create("Lee Scoresby", "Texan aeronaut who transports Lyra in his balloon. Good friend with Iorek Byrnison."),
Pair.create("Ma Costa", "Gyptian woman whose son, Billy Costa is abducted by the \"Gobblers\"."),
Pair.create("John Faa", "The King of all gyptian people.")
);
@Override
public int getItemCount() {
return characters.size();
}
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
View view = inflater.inflate(R.layout.fragment_categories_favorites, parent, false);
return new MyViewHolder(view);
}
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
Pair<String, String> pair = characters.get(position);
holder.display(pair);
}
public class MyViewHolder extends RecyclerView.ViewHolder {
private final TextView name;
private final TextView description;
private Pair<String, String> currentPair;
public MyViewHolder(final View itemView) {
super(itemView);
name = ((TextView) itemView.findViewById(R.id.info_text));
description = ((TextView) itemView.findViewById(R.id.info_text2));
itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new AlertDialog.Builder(itemView.getContext())
.setTitle(currentPair.first)
.setMessage(currentPair.second)
.show();
}
});
}
public void display(Pair<String, String> pair) {
currentPair = pair;
name.setText(pair.first);
description.setText(pair.second);
}
}
}
What I have done wrong ? 我做错了什么？ (sorry for my english too) （我的英语也很抱歉）
Thanks in advance 提前致谢
1 个解决方案
解决方案1
2 已采纳 2016-09-01 05:49:18
您不能具有fragment_categories_favorites.xml的回收器视图中的子视图。为行项目使用单独的xml，并从适配器中对其进行充气，请参见此处以获取工作示例http://www.androidhive.info/2016/01/ android-with-recycler-view /
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