3：列表项布局 rv_item.xml 外面一个CardView的卡片式容器，里面一个TextView
<?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.CardView xmlns:card_view="http://www.easck.com/apk/res-auto" xmlns:android="http://www.easck.com/apk/res/android" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_margin="8dp" android:id="@+id/cv_item" android:foreground="?android:attr/selectableItemBackground" card_view:cardCornerRadius="4dp" card_view:cardElevation="4dp" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content"> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/tv_item_text" android:text="test" android:layout_margin="8dp" /> </LinearLayout> </android.support.v7.widget.CardView>
4：RecyclerView的Adapter RvAdapter.java
public class RvAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private LayoutInflater mLayoutInflater;
private Context mContext;
private List <String> mTitle;
public RvAdapter(Context context,List<String> title){
mContext=context;
mTitle=title;
mLayoutInflater=LayoutInflater.from(context);
}
//自定义的ViewHolder，持有每个Item的的所有界面元素
public static class NormalViewHolder extends RecyclerView.ViewHolder {
TextView mTextView;
CardView mCardView;
public NormalViewHolder(View itemView) {
super(itemView);
mTextView=(TextView)itemView.findViewById(R.id.tv_item_text);
mCardView=(CardView)itemView.findViewById(R.id.cv_item);
}
}
//在该方法中我们创建一个ViewHolder并返回，ViewHolder必须有一个带有View的构造函数，这个View就是我们Item的根布局，在这里我们使用自定义Item的布局；
@Override
public NormalViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new NormalViewHolder(mLayoutInflater.inflate(R.layout.rv_item,parent,false));
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
NormalViewHolder viewholder = (NormalViewHolder) holder;
viewholder.mTextView.setText(mTitle.get(position));
}
//获取数据的数量
@Override
public int getItemCount() {
return mTitle==null ? 0 : mTitle.size();
}
}
