如何使用回收器视图或在回收器视图的适配器中将 xml 解析为 java 类

【问题标题】：How to parse an xml to java class with recycler view or in adapter of recyclerview如何使用回收器视图或在回收器视图的适配器中将 xml 解析为 java 类
【发布时间】：2019-05-03 08:28:42
【问题描述】：

我有一个名为 Bookmark 的 xml 文件，它位于 xml 文件夹中。 我想将 xml 解析为回收器视图，我可以在回收器视图中显示书签列表。 书签 xml 它不在 assets 中，它在 res 和 xml 文件夹中。 这是我的代码。

xml文件夹中的Bookmark.xml

<Bookmarks>
    <Bookmark id="1" icon="google.png" name="Google" searchUrl="https://www.google.com" hidden="true" />
    <Bookmark id="2" icon="youtube_new.png" name="Youtube" searchUrl="http://m.youtube.com" />
    <Bookmark id="3" icon="facebook.png" name="Facebook" nativeUrl="facebook://" searchUrl="https://m.facebook.com" />
    <Bookmark id="4" icon="twitter.png" name="Twitter" searchUrl="https://mobile.twitte.com" />
    <Bookmark id="5" icon="instagram.png" name="Instagram" nativeUrl="instagram://" searchUrl="https:instagram.com" />
    <Bookmark id="6" icon="gmail.png" name="Gmail" nativeUrl="googlemail://" searchUrl="https://gmail.com" />
    <Bookmark id="7" icon="google_translate.png" name="Translate" searchUrl="https://" />

</Bookmarks>

这是回收器视图的java类

 public class FragmentBookmark extends Fragment {
    ArrayList<Bookmark> arrayList = new ArrayList<>();
    XmlPullParserFactory pullParserFactory;
    RecyclerView myRecyclerView;
    MyAdapter myAdapter;

    public void onCreateView(@Nullable Bundle savedInstanceState) {
        myRecyclerView = getActivity().findViewById(R.id.myRecyclerView);
        RecyclerView.LayoutManager layoutManager = new GridLayoutManager(getActivity(), 1);
        myRecyclerView.setHasFixedSize(true);
        try {
            pullParserFactory = XmlPullParserFactory.newInstance();
            XmlPullParser parser = pullParserFactory.newPullParser();

            InputStream in_s = getActivity().getApplicationContext().getAssets().open("bookmarks.xml");
            parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
            parser.setInput(in_s, null);

            parseXML(parser);

        } catch (XmlPullParserException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        for (int i = 0; i < arrayList.size(); i++) {
            Log.e("OUTPUT", arrayList.get(i).toString());
        }

        myAdapter = new MyAdapter(getActivity(), arrayList);
        myRecyclerView.setAdapter(myAdapter);
    }

    private void parseXML(XmlPullParser parser) throws XmlPullParserException, IOException {
        ArrayList<Bookmark> countries = null;
        int eventType = parser.getEventType();
        Bookmark country = null;

        while (eventType != XmlPullParser.END_DOCUMENT) {
            String name;
            name = parser.getName();
            switch (eventType) {
                case XmlPullParser.START_DOCUMENT:
                    countries = new ArrayList();
                    break;
                case XmlPullParser.START_TAG:
                    break;

                case XmlPullParser.END_TAG:
                    if (name.equals("Bookmark")) {

                        Bookmark bookmark = new Bookmark();
                        bookmark.setName(parser.getAttributeValue(null, "name"));
                        bookmark.setIcon(parser.getAttributeValue(null, "icon"));
                        bookmark.setId(parser.getAttributeValue(null, "id"));
                        bookmark.setSearchUrl(parser.getAttributeValue(null, "searchUrl"));
                        bookmark.setNativeUrl(parser.getAttributeValue(null, "nativeUrl"));
                        arrayList.add(bookmark);
                    }
                    break;
            }
            eventType = parser.next();
        }


    }

    private void processParsing(XmlPullParser parser) throws IOException, XmlPullParserException {
        int eventType = parser.getEventType();
        Bookmark bookmark = null;


    }
    }

这是回收站视图 xml

<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/listRecyclerView"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_marginBottom="8dp"
    android:layout_marginEnd="8dp"
    android:layout_marginStart="8dp"
    android:layout_marginTop="8dp"
    app:layout_constraintBottom_toBottomOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    android:fillViewport="false">

    </android.support.v7.widget.RecyclerView>

这是recyclerview的适配器

public class MyAdapter extends RecyclerView.Adapter {
    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.grid_item, viewGroup, false);
        return new ListViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) {
        ((ListViewHolder) viewHolder).bindView(i);
    }

    @Override
    public int getItemCount() {
        return OurData.title.length;
    }

    private class ListViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
        private TextView mItemText;
        private ImageView mItemImage;

        public ListViewHolder(View itemView) {
            super(itemView);
            mItemText = itemView.findViewById(R.id.textView);
            mItemImage =  itemView.findViewById(R.id.image_view);
            itemView.setOnClickListener(this);
        }

        public void bindView(int position) {
            mItemText.setText(OurData.title[position]);
            mItemImage.setImageResource(OurData.picture[position]);

        }

        @Override
        public void onClick(View v) {

        }
    }
}

这是我手动添加并在回收站视图中工作的 java 类，但我需要书签 xml 才能在回收站视图中显示

public class OurData {
    public static String[] title = new String[] {
            "Bing",
            "Facebook",
            "Gmail",
            "Translate",
            "Bing",
            "Facebook",
            "Gmail",
            "Translate"
    };

    public static int[] picture = new int[] {
            R.drawable.instagram,
            R.drawable.instagram,
            R.drawable.instagram,
            R.drawable.instagram,
            R.drawable.instagram,
            R.drawable.instagram,
            R.drawable.instagram,
            R.drawable.instagram

    };
}

这是显示图像和用于回收站视图的 TextView 的 xml

<android.support.constraint.ConstraintLayout 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_width="match_parent"
    android:layout_height="70dp"
    android:id="@+id/recyclerView">

    <ImageView
        android:id="@+id/image_view"
        android:layout_width="28dp"
        android:layout_height="27dp"
        android:layout_alignParentTop="true"
        android:layout_marginStart="8dp"
        android:layout_marginEnd="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.129"
        app:layout_constraintStart_toStartOf="parent"
        tools:ignore="MissingConstraints"
        tools:layout_editor_absoluteY="16dp" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="80dp"
        android:layout_height="23dp"
        android:layout_below="@+id/image_view"
        android:layout_marginStart="8dp"
        android:layout_marginEnd="8dp"
        android:gravity="center"
        android:text="TextView"
        app:layout_constraintHorizontal_bias="0.069"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/image_view" />

</android.support.constraint.ConstraintLayout>

【问题讨论】：

    标签： java android xml android-recyclerview xml-parsing


    【解决方案1】：

    更新 2

    片段书签

    public class FragmentBookmark extends Fragment {


    public FragmentBookmark() {
        // Required empty public constructor
    }

    private Context mContext;
    ArrayList<Bookmark> arrayList = new ArrayList<>();
    XmlPullParserFactory pullParserFactory;

    RecyclerView myRecyclerView;
    DataAdapter dataAdapter;

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        mContext = context;
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {


        View rootView = inflater.inflate(R.layout.fragment_bookmark, container, false);

        myRecyclerView = rootView.findViewById(R.id.myRecyclerView);
        myRecyclerView.setLayoutManager(new LinearLayoutManager(mContext));
        myRecyclerView.setHasFixedSize(true);

        dataAdapter = new DataAdapter(mContext, arrayList);
        myRecyclerView.setAdapter(dataAdapter);

        try {

            XmlPullParser xpp = getResources().getXml(R.xml.bookmarks);

            while (xpp.getEventType() != XmlPullParser.END_DOCUMENT) {
                if (xpp.getEventType() == XmlPullParser.START_TAG) {
                    if (xpp.getName().equals("Bookmark")) {

                        Log.e("MY_VALUE", " * " + xpp.getAttributeValue(0) + " * ");
                        Log.e("MY_VALUE", " * " + xpp.getAttributeValue(1) + " * ");
                        Log.e("MY_VALUE", " * " + xpp.getAttributeValue(5) + " * ");
                        Log.e("MY_VALUE", " * " + xpp.getAttributeValue(2) + " * ");
                        Log.e("MY_VALUE", " * " + xpp.getAttributeValue(3) + " * ");
                        Log.e("MY_VALUE", " * " + xpp.getAttributeValue(4) + " * ");


                        Bookmark bookmark = new Bookmark();
                        bookmark.setName(xpp.getAttributeValue(0));

                        int drawableResourceId = this.getResources().getIdentifier(xpp.getAttributeValue(1), "drawable", mContext.getPackageName());
                        bookmark.setIcon(drawableResourceId);

                        bookmark.setId(xpp.getAttributeValue(2));

                        bookmark.setSearchUrl(xpp.getAttributeValue(3));
                        bookmark.setNativeUrl(xpp.getAttributeValue(4));
                        arrayList.add(bookmark);

                    }
                }

                xpp.next();
            }
        } catch (XmlPullParserException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        dataAdapter.notifyDataSetChanged();
        return rootView;
    }

}

    layout.fragment_bookmark

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/myRecyclerView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</RelativeLayout>

    数据适配器

    public class DataAdapter  extends RecyclerView.Adapter<DataAdapter.ViewHolder> {

    private Context context;
    ArrayList<Bookmark> arrayList = new ArrayList<>();

    public DataAdapter(Context context, ArrayList<Bookmark> arrayList) {
        this.context = context;
        this.arrayList = arrayList;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int i) {

        View view=LayoutInflater.from(context).inflate(R.layout.custom_layout,parent,false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {

        holder.tvName.setText(arrayList.get(position).getName());

        holder.tvIcon.setImageResource(arrayList.get(position).getIcon());

        holder.tvId.setText(arrayList.get(position).getId());
        holder.tvSearchUrl.setText(arrayList.get(position).getSearchUrl());
        holder.tvNativeUrl.setText(arrayList.get(position).getNativeUrl());
    }

    @Override
    public int getItemCount() {
        return arrayList.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {

        TextView tvName,tvId,tvSearchUrl,tvNativeUrl;

        ImageView tvIcon;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);

            tvName=itemView.findViewById(R.id.tvName);
            tvIcon=itemView.findViewById(R.id.tvIcon);
            tvId=itemView.findViewById(R.id.tvId);
            tvSearchUrl=itemView.findViewById(R.id.tvSearchUrl);
            tvNativeUrl=itemView.findViewById(R.id.tvNativeUrl);
        }
    }
}

    layout.custom_layout

    <?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    app:cardCornerRadius="15dp"
    app:cardElevation="5dp"
    app:cardUseCompatPadding="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="Name  : " />

            <TextView
                android:id="@+id/tvName"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="Icon  : " />

            <ImageView
                android:id="@+id/tvIcon"
                android:layout_width="20dp"
                android:layout_height="20dp"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="Id  : " />

            <TextView
                android:id="@+id/tvId"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="SearchUrl  : " />

            <TextView
                android:id="@+id/tvSearchUrl"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="NativeUrl  : " />

            <TextView
                android:id="@+id/tvNativeUrl"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

    </LinearLayout>

</android.support.v7.widget.CardView>

    书签模型类

    public class Bookmark
{
    String name,id,nativeUrl,searchUrl;
    int icon;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public int getIcon() {
        return icon;
    }

    public void setIcon(int icon) {
        this.icon = icon;
    }

    public String getNativeUrl() {
        return nativeUrl;
    }

    public void setNativeUrl(String nativeUrl) {
        this.nativeUrl = nativeUrl;
    }

    public String getSearchUrl() {
        return searchUrl;
    }

    public void setSearchUrl(String searchUrl) {
        this.searchUrl = searchUrl;
    }

    @Override
    public String toString() {
        return "Bookmark{" +
                "name='" + name + '\'' +
                ", icon='" + icon + '\'' +
                ", id='" + id + '\'' +
                ", nativeUrl='" + nativeUrl + '\'' +
                ", searchUrl='" + searchUrl + '\'' +
                '}';
    }
}

    更新

    XML 文件

    <Bookmarks>
    <Bookmark
        name="Google"
        hidden="true"
        icon="google.png"
        id="1"
        nativeUrl=""
        searchUrl="https://www.google.com" />
    <Bookmark
        name="Youtube"
        hidden=""
        icon="youtube_new.png"
        id="2"
        nativeUrl=""
        searchUrl="http://m.youtube.com" />
    <Bookmark
        name="Facebook"
        hidden=""
        icon="facebook.png"
        id="3"
        nativeUrl="facebook://"
        searchUrl="https://m.facebook.com" />
    <Bookmark
        name="Twitter"
        hidden=""
        icon="twitter.png"
        id="4"
        nativeUrl=""
        searchUrl="https://mobile.twitte.com" />
    <Bookmark
        name="Instagram"
        hidden=""
        icon="instagram.png"
        id="5"
        nativeUrl="instagram://"
        searchUrl="https:instagram.com" />
    <Bookmark
        name="Gmail"
        hidden=""
        icon="gmail.png"
        id="6"
        nativeUrl="googlemail://"
        searchUrl="https://gmail.com" />
    <Bookmark
        name="Translate"
        hidden=""
        icon="google_translate.png"
        id="7"
        nativeUrl=""
        searchUrl="https://" />

</Bookmarks>

    这是从res/XML文件夹解析XML的代码

        try {

        XmlPullParser xpp = getResources().getXml(R.xml.bookmarks);

        while (xpp.getEventType() != XmlPullParser.END_DOCUMENT) {
            if (xpp.getEventType() == XmlPullParser.START_TAG) {
                if (xpp.getName().equals("Bookmark")) {

                    Log.e("MY_VALUE", " * " + xpp.getAttributeValue(0) + " * ");
                    Log.e("MY_VALUE", " * " + xpp.getAttributeValue(1) + " * ");
                    Log.e("MY_VALUE", " * " + xpp.getAttributeValue(5) + " * ");
                    Log.e("MY_VALUE", " * " + xpp.getAttributeValue(2) + " * ");
                    Log.e("MY_VALUE", " * " + xpp.getAttributeValue(3) + " * ");
                    Log.e("MY_VALUE", " * " + xpp.getAttributeValue(4) + " * ");

                    Bookmark bookmark = new Bookmark();
                    bookmark.setName(xpp.getAttributeValue(0));
                    bookmark.setIcon(xpp.getAttributeValue(1));
                    bookmark.setId(xpp.getAttributeValue(2));
                    bookmark.setSearchUrl(xpp.getAttributeValue(3));
                    bookmark.setNativeUrl(xpp.getAttributeValue(4));
                    arrayList.add(bookmark);

                }
            }

            xpp.next();
        }
    } catch (XmlPullParserException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    我们可以使用三种类型的 android XML 解析器。

    • SAX Parsers

    • DOM Parsers

    • XMLPullParser

    您可以使用XmlPullParserFactory 来解析您的xml

    试试这个是工作代码

    主活动

    import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

    ArrayList<Bookmark> arrayList = new ArrayList<>();
    XmlPullParserFactory pullParserFactory;

    RecyclerView myRecyclerView;
    DataAdapter dataAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        myRecyclerView = findViewById(R.id.myRecyclerView);
        myRecyclerView.setLayoutManager(new LinearLayoutManager(this));
        myRecyclerView.setHasFixedSize(true);
        try {
            pullParserFactory = XmlPullParserFactory.newInstance();
            XmlPullParser parser = pullParserFactory.newPullParser();

            InputStream in_s = getApplicationContext().getAssets().open("bookmark.xml");
            parser.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
            parser.setInput(in_s, null);

            parseXML(parser);

        } catch (XmlPullParserException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        for (int i = 0; i < arrayList.size(); i++) {
            Log.e("OUTPUT", arrayList.get(i).toString());
        }

        dataAdapter = new DataAdapter(this, arrayList);
        myRecyclerView.setAdapter(dataAdapter);
    }

    private void parseXML(XmlPullParser parser) throws XmlPullParserException, IOException {
        ArrayList<Bookmark> countries = null;
        int eventType = parser.getEventType();
        Bookmark country = null;

        while (eventType != XmlPullParser.END_DOCUMENT) {
            String name;
            name = parser.getName();
            switch (eventType) {
                case XmlPullParser.START_DOCUMENT:
                    countries = new ArrayList();
                    break;
                case XmlPullParser.START_TAG:
                    break;

                case XmlPullParser.END_TAG:
                    if (name.equals("Bookmark")) {
                        Log.e("VALUE", parser.getAttributeValue(null, "name") + "");
                        Log.e("VALUE", parser.getAttributeValue(null, "icon") + "");
                        Log.e("VALUE", parser.getAttributeValue(null, "id") + "");
                        Log.e("VALUE", parser.getAttributeValue(null, "searchUrl") + "");
                        Log.e("VALUE", parser.getAttributeValue(null, "nativeUrl") + "");

                        Bookmark bookmark = new Bookmark();
                        bookmark.setName(parser.getAttributeValue(null, "name"));
                        bookmark.setIcon(parser.getAttributeValue(null, "icon"));
                        bookmark.setId(parser.getAttributeValue(null, "id"));
                        bookmark.setSearchUrl(parser.getAttributeValue(null, "searchUrl"));
                        bookmark.setNativeUrl(parser.getAttributeValue(null, "nativeUrl"));
                        arrayList.add(bookmark);
                    }
                    break;
            }
            eventType = parser.next();
        }


    }

    private void processParsing(XmlPullParser parser) throws IOException, XmlPullParserException {
        int eventType = parser.getEventType();
        Bookmark bookmark = null;


    }
}

    layout.activity_main

    <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/myRecyclerView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</RelativeLayout>

    数据适配器

    import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.ArrayList;

public class DataAdapter  extends RecyclerView.Adapter<DataAdapter.ViewHolder> {

    private Context context;
    ArrayList<Bookmark> arrayList = new ArrayList<>();

    public DataAdapter(Context context, ArrayList<Bookmark> arrayList) {
        this.context = context;
        this.arrayList = arrayList;
    }

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int i) {

        View view=LayoutInflater.from(context).inflate(R.layout.custom_layout,parent,false);
        return new ViewHolder(view);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {

        holder.tvName.setText(arrayList.get(position).getName());
        holder.tvIcon.setText(arrayList.get(position).getIcon());
        holder.tvId.setText(arrayList.get(position).getId());
        holder.tvSearchUrl.setText(arrayList.get(position).getSearchUrl());
        holder.tvNativeUrl.setText(arrayList.get(position).getNativeUrl());
    }

    @Override
    public int getItemCount() {
        return arrayList.size();
    }

    public class ViewHolder extends RecyclerView.ViewHolder {

        TextView tvName,tvIcon,tvId,tvSearchUrl,tvNativeUrl;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);

            tvName=itemView.findViewById(R.id.tvName);
            tvIcon=itemView.findViewById(R.id.tvIcon);
            tvId=itemView.findViewById(R.id.tvId);
            tvSearchUrl=itemView.findViewById(R.id.tvSearchUrl);
            tvNativeUrl=itemView.findViewById(R.id.tvNativeUrl);
        }
    }
}

    layout.custom_layout

    <?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    app:cardCornerRadius="15dp"
    app:cardElevation="5dp"
    app:cardUseCompatPadding="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="Name  : " />

            <TextView
                android:id="@+id/tvName"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="Icon  : " />

            <TextView
                android:id="@+id/tvIcon"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="Id  : " />

            <TextView
                android:id="@+id/tvId"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="SearchUrl  : " />

            <TextView
                android:id="@+id/tvSearchUrl"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="NativeUrl  : " />

            <TextView
                android:id="@+id/tvNativeUrl"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="10dp"
                android:text="" />

        </LinearLayout>

    </LinearLayout>

</android.support.v7.widget.CardView>

    书签模型类

    public class Bookmark
{
    String name,icon,id,nativeUrl,searchUrl;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getIcon() {
        return icon;
    }

    public void setIcon(String icon) {
        this.icon = icon;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getNativeUrl() {
        return nativeUrl;
    }

    public void setNativeUrl(String nativeUrl) {
        this.nativeUrl = nativeUrl;
    }

    public String getSearchUrl() {
        return searchUrl;
    }

    public void setSearchUrl(String searchUrl) {
        this.searchUrl = searchUrl;
    }

    @Override
    public String toString() {
        return "Bookmark{" +
                "name='" + name + '\'' +
                ", icon='" + icon + '\'' +
                ", id='" + id + '\'' +
                ", nativeUrl='" + nativeUrl + '\'' +
                ", searchUrl='" + searchUrl + '\'' +
                '}';
    }
}

    更多信息请查看下面的帖子

    输出

    【讨论】：

    • 你知道图标是来自 drawable-hdpi 的图像并且显示图标而不是字符串。
    • @Spritzig 您的图标存储在哪里意味着在drawable 文件夹中
    • 是的，它们已经存储在那里
    • @Spritzig 但在哪里
    • 在文件夹中~drawable hdpi~
    【解决方案2】：

    您可以使用this 库将XML 解析为您的POJO 文件。解析可以在您的Fragment中完成。

    【讨论】：

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