在RecyclerView中显示带有图标的字符串的最简单方法 [英] The simplest way to display Strings with icons in a RecyclerView
问题描述
在RecyclerView
中显示字符串和图标列表的最简单的方法 是什么?
What is please the easiest way to show a list of Strings and icons in a RecyclerView
?
对于ListView
,我使用以下代码(此处 GitHub上的完整项目)没有单独的适配器:
For ListView
I use the following code (here a full project at GitHub) without a separate Adapter:
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, 0, 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();
}
});
我想知道如何将ArrayAdapter
和android.R.layout.simple_list_item_1
与 RecyclerView 以类似的简单方式,即无需自定义布局和适配器.
I wonder how to use ArrayAdapter
and android.R.layout.simple_list_item_1
with RecyclerView in a similarly simple way, that is without custom layouts and adapters.
推荐答案
哥们,这是最简单的方法
Buddy this is the most simplest way
-
首先将依赖项添加到 build.gradle 文件
compile 'com.android.support:recyclerview-v7:21.0.+'
在您的MainActivity中定义RecyclerView对象
In your MainActivity define RecyclerView Object
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 Killer PlanetAdapter ,您必须定义PlanetAdapter来扩展RecyclerView.Adapter
The Main Buzz Killer PlanetAdapter,You have to define PlanetAdapter which extends 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
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
The last But not the least 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>
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