要将数据从ArrayList显示到RecycleView,可以按照以下步骤进行操作:
ArrayList<String> dataList = new ArrayList<>();
dataList.add("数据1");
dataList.add("数据2");
dataList.add("数据3");
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
private ArrayList<String> mDataList;
public MyAdapter(ArrayList<String> dataList) {
mDataList = dataList;
}
// 创建列表项视图
@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_layout, parent, false);
return new MyViewHolder(view);
}
// 绑定数据到列表项视图
@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
String data = mDataList.get(position);
holder.bindData(data);
}
// 返回数据项数量
@Override
public int getItemCount() {
return mDataList.size();
}
// 定义列表项视图的ViewHolder
public static class MyViewHolder extends RecyclerView.ViewHolder {
private TextView mDataTextView;
public MyViewHolder(View itemView) {
super(itemView);
mDataTextView = itemView.findViewById(R.id.data_text_view);
}
public void bindData(String data) {
mDataTextView.setText(data);
}
}
}
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
RecyclerView recyclerView = findViewById(R.id.recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
MyAdapter adapter = new MyAdapter(dataList);
recyclerView.setAdapter(adapter);
通过以上步骤,就可以将ArrayList中的数据显示到RecycleView中了。注意,需要根据自己的需求进行相应的定制和调整,例如自定义列表项视图的布局和样式。
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