Question

我正在尝试使用简单的String数据填充RecyclerView，但recyclerView.setAdapter(adapter);会出错。问题是什么？

我是recyclerview的新手。

RecyclerView recyclerView;
String []data = {"ankush", "kapoor"};

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    recyclerView = (RecyclerView) findViewById(R.id.myRecyclerView);
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, data);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    recyclerView.setAdapter(adapter);
}

Answer 1

您必须为RecyclerView创建自定义Adapter类。以下是RecyclerView自定义适配器类的示例：

public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.MyViewHolder>{

private LayoutInflater inflater;
private Context context;
<your string array list>

public CustomAdapter(Context context,<your string arraylist>) {
    inflater = LayoutInflater.from(context);
    this.context = context;
    this.<your string arraylist>=<your string arraylist>;
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = inflater.inflate(R.layout.custom_layout, parent, false);
    MyViewHolder holder = new MyViewHolder(view);
    return holder;
}

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
         holder.serial_number.setText(<your string array[position]>);
}

@Override
public int getItemCount() {
    return <size of your string array list>;
}

class MyViewHolder extends RecyclerView.ViewHolder
{
    TextView serial_number;

    public MyViewHolder(View itemView) {
        super(itemView);
        serial_number = (TextView)itemView.findViewById(R.id.serialNo_CL);
        }
    }
}

recyclerView.setAdapter不接受ArrayAdapter

1 个答案: