android – 在RecyclerView中使用图标显示字符串的最简单方法

什么是最简单的方法来显示RecyclerView中的字符串和图标列表？

对于ListView,我使用以下代码(此处为a full project at GitHub),而不使用单独的适配器：

mListView = (ListView) findViewById(R.id.list_view);

mListView.setAdapter(new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1,mPlanets) {
    @Override
    public View getView(int position,View convertView,ViewGroup parent) {
        TextView view = (TextView) super.getView(position,convertView,parent);
            view.setCompoundDrawablesWithIntrinsicBounds(R.drawable.ic_stars_black_24dp,0);
            return view;
    }
});
mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override
    public void onItemClick(AdapterView<?> parent,View view,int position,long id) {
        Toast.makeText(getApplicationContext(),"You have clicked " + mPlanets[position],Toast.LENGTH_LONG).show();
    }
});

我想知道如何以类似的简单方式使用ArrayAdapter和android.R.layout.simple_list_item_1和RecyclerView,即没有自定义布局和适配器.

解决方法

伙计这是最简单的方式

>首先在build.gradle文件中添加依赖项

compile 'com.android.support:recyclerview-v7:21.0.+'

>在MainActivity中定义RecyclerView对象

private RecyclerView recyclerView;
private RecyclerView.Adapter adapter;
private RecyclerView.LayoutManager layoutManager;
private ArrayList<String> planetList=new ArrayList();
//Other Stuff

protected void onCreate(Bundle savedInstanceState) {
    //Other Stuff and initialize planetList with all the planets name before passing it to adapter

    recyclerView = (RecyclerView) findViewById(R.id.recycler_view);
    layoutManager = new LinearLayoutManager(this);
    recyclerView.setLayoutManager(layoutManager);

    adapter = new PlanetAdapter(planetList,getApplicationContext());
    recyclerView.setAdapter(adapter);
}

>主要的Buzz杀手PlanetAdapter,您必须定义PlanetAdapter,它扩展了RecyclerView.Adapter

public class PlanetAdapter extends RecyclerView.Adapter<PlanetAdapter.PlanetViewHolder> {

    ArrayList<String> planetList;

    public PlanetAdapter(ArrayList<String> planetList,Context context) {
        this.planetList = planetList;
    }

    @Override
    public PlanetAdapter.PlanetViewHolder onCreateViewHolder(ViewGroup parent,int viewType) {
        View v= LayoutInflater.from(parent.getContext()).inflate(R.layout.planet_row,parent,false);
        PlanetViewHolder viewHolder=new PlanetViewHolder(v);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(PlanetAdapter.PlanetViewHolder holder,int position) {
        holder.image.setImageResource(R.drawable.planetimage);
        holder.text.setText(planetList.get(position).toString());
    }

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

    public static class PlanetViewHolder extends RecyclerView.ViewHolder{

        protected ImageView image;
        protected TextView text;

        public PlanetViewHolder(View itemView) {
            super(itemView);
            image= (ImageView) itemView.findViewById(R.id.image_id);
            text= (TextView) itemView.findViewById(R.id.text_id);
        }
    }
}

4.main_activity.xml

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

>最后但并非最不重要的planet_row.xml

<LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:orientation="horizontal">

     <ImageView
          android:layout_width="40dp"
          android:layout_height="40dp"
          android:id="@+id/image_id"/>

     <TextView
          android:layout_width="wrap_content"
          android:layout_height="wrap_content"
          android:text="Planet Name"
          android:id="@+id/text_id"/>
</LinearLayout>