在 RecyclerView
中显示字符串和图标列表的最简单方法是什么?
对于 ListView
,我使用以下代码(此处为 a full project at GitHub)没有单独的适配器:
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, 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 一起使用以同样简单的方式,即没有自定义布局和适配器。
最佳答案
兄弟这是最简单的方法
首先在build.gradle文件中添加依赖
compile 'com.android.support:recyclerview-v7:21.0.+'
在您的 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 Killer PlanetAdapter,您必须定义扩展 RecyclerView.Adapter 的 PlanetAdapter
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>
关于android - 在 RecyclerView 中用图标显示字符串的最简单方法,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/31572294/