Question

我有一个RecyclerView，它扩展了网格布局以显示图像和文本，它具有一个onclick侦听器，可导致第二个活动，在该活动中，我有两个由适配器发送的数据填充的视图，得到了要通过的图像，以及我通过

设置的静态文本

lstItem.add(new Item("Item1","Category",R.strings.item1Des,R.drawable.image1));

图像通过，但字符串不通过。

我的适配器类

import android.content.Context;
import android.content.Intent;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.view.*;
import android.widget.*;

import java.util.List;


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

    private Context mContext ;
    private List<Item> mData ;


    public RecyclerViewAdapter(Context mContext, List<Item> mData) {
        this.mContext = mContext;
        this.mData = mData;
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        View view ;
        LayoutInflater mInflater = LayoutInflater.from(mContext);
        view = mInflater.inflate(R.layout.cardveiw_item_item,parent,false);
        return new MyViewHolder(view);
    }

    @Override
    public void onBindViewHolder(MyViewHolder holder, final int position) {

        holder.tv_tem_title.setText(mData.get(position).getTitle());
        holder.img_item_thumbnail.setImageResource(mData.get(position).getThumbnail());
        holder.cardView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                Intent intent = new Intent(mContext,Item_Activity.class);

                // passing data to the book activity
                intent.putExtra("Title",mData.get(position).getTitle());
                intent.putExtra("Description",mData.get(position).getDescription());
                intent.putExtra("Thumbnail",mData.get(position).getThumbnail());
                // start the activity
                mContext.startActivity(intent);

            }
        });

    }

    @Override
    public int getItemCount() {
        return mData.size();
    }

    public static class MyViewHolder extends RecyclerView.ViewHolder {

        TextView tv_item_title;
        ImageView img_item_thumbnail;
        CardView cardView ;

        public MyViewHolder(View itemView) {
            super(itemView);

            tv_item_title = (TextView) itemView.findViewById(R.id.book_title_id) ;
            img_item_thumbnail = (ImageView) itemView.findViewById(R.id.item_img_id);
            cardView = (CardView) itemView.findViewById(R.id.cardview_id);


        }
    }

}

我的项目活动（在onclick之后打开）：

private TextView tvtitle,tvdescription,tvcategory;
private ImageView img;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_book_);

    tvtitle = (TextView) findViewById(R.id.txttitle);
    tvdescription = (EditText) findViewById(R.id.txtDesc);
    tvcategory = (TextView) findViewById(R.id.txtCat);
    tvdescription.setKeyListener(null);
    img = (ImageView) findViewById(R.id.itemthumbnail);

    Object clipboardService = getSystemService(CLIPBOARD_SERVICE);
    final ClipboardManager clipboardManager = (ClipboardManager)clipboardService;
    Button copyButton = (Button)findViewById(R.id.clipboard_copy_button);


    // Recieve data
    Intent intent = getIntent();
    String Title = intent.getExtras().getString("Title");
    String Description = intent.getExtras().getString("Description");
    int image = intent.getExtras().getInt("Thumbnail") ;

    // Setting values

    tvtitle.setText(Title);
    tvdescription.setText(Description);
    img.setImageResource(image);

    copyButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {  }
    });
}

我的物品分类

public class Item{

    private String Title;
    private String Category ;
    private int Description ;
    private int Thumbnail ;


    public Item(String title, String category, int description, int thumbnail) {
        Title = title;
        Category = category;
        Description = description;
        Thumbnail = thumbnail;
    }


    public String getTitle() {
        return Title;
    }

    public String getCategory() {
        return Category;
    }

    public int getDescription() {
        return Description;
    }

    public int getThumbnail() {
        return Thumbnail;
    }


    public void setTitle(String title) {
        Title = title;
    }

    public void setCategory(String category) {
        Category = category;
    }

    public void setDescription(int description) {
        Description = description;
    }

    public void setThumbnail(int thumbnail) {
        Thumbnail = thumbnail;
    }
}

Answer 1

在适配器类的onBindViewHolder()的这一行：

intent.putExtra("Description", mData.get(position).getDescription());

mData.get(position).getDescription()是一个整数，代表字符串资源中的id。因此它不是实际字符串。
更改为：

String desc = mContext.getResources().getString(mData.get(position).getDescription());
intent.putExtra("Description", desc);

Answer 2

当您传递字符串的ID（即int），即R.strings.item1Des时，您必须首先从Intent Extras中获取ID，然后通过调用getString(R.strings.item1Des)方法来获取其值，像这样使用该字符串

String Description = getString(intent.getIntExtra("Description",0));

Answer 3

这应该有效。您的描述是Int（仅引用字符串资源）

// Recieve data
    Intent intent = getIntent();
    String Title = intent.getExtras().getString("Title");
    int Description = intent.getExtras().getInt("Description");
    int image = intent.getExtras().getInt("Thumbnail") ;

    // Setting values

    tvtitle.setText(Title);
    tvdescription.setText(getString(Description));
    img.setImageResource(image);

Answer 4

（代表问题作者发布）。

我使用的是getString（R.strings.id），而不仅仅是R.strings.Id。

如何通过RecyclerView从string.xml中传递字符串

4 个答案: