Question

我正在尝试根据我得到的JSON响应在我的cardview中设置文本和图像。我的json将包含以下信息：

{["name":"Store 1","wifi":true, ...]}

我正在使用片段，cardadapter和类，我现在可以解析名称并显示在我的cardview上但现在我想显示来自我的drawable文件的wifi图标，如果wifi的响应是真的并且不要＃39;如果图标为假，则显示图标。

用于解析片段中数据的代码：

 private void parseData(JSONArray array){

    for(int i = 0; i<array.length(); i++) {
        StoreListCard storeListCard = new StoreListCard();
        JSONObject json = null;
        try {
            json = array.getJSONObject(i);

            //Parse name
            storeListCard.setName(json.getString(Config.TAG_NAME));


            if(json.getBoolean(Config.TAG_WIFI) == true){
                storeListCard.setWifi(json.getBoolean(Config.TAG_WIFI));
            }

        } catch (JSONException e) {
            e.printStackTrace();
        }
        storeListCards.add(storeListCard);
    }

}

StoreListCard.java：

public class StoreListCard {
    private String name;
    private Boolean wifi;

        public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public Boolean getWifi() {
    return wifi;
}

public void setWifi(Boolean wifi) {
    this.wifi = wifi;
}
}

CardAdapter：

public class CardAdapter extends RecyclerView.Adapter<CardAdapter.ViewHolder>{

    List<StoreListCard> storeListCards;
    public CardAdapter(List<StoreListCard> storeListCards, Context context){
    super();
    //Getting all the information
    this.storeListCards = storeListCards;
    this.context = context;
}


@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.store_cardview, parent, false);
    ViewHolder viewHolder = new ViewHolder(v);
    return viewHolder;
}

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

    StoreListCard storeListCard =  storeListCards.get(position);
    holder.tvStoreName.setText(storeListCard.getName());

    //This part I am not sure
    holder.ivWifiIcon.setImageResource();
}

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

    class ViewHolder extends RecyclerView.ViewHolder{
    public TextView tvStoreName;
    public ImageView ivWifiIcon;

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

        tvStoreName = (TextView) itemView.findViewById(R.id.tvStoreName);
        ivWifiIcon = (ImageView) itemView.findViewById(R.id.ivWifiIcon);

    }
}
}

xml（名称和wifi的一部分）：

            <ImageView
                android:layout_width="20dp"
                android:layout_height="20dp"
                android:layout_toRightOf="@id/ivWaitingIcon"
                android:background="@drawable/tool_wifi_icon_02"
                android:layout_marginLeft="5dp"
                android:layout_alignBottom="@id/ivWaitingIcon"
                android:id="@+id/ivWifiIcon"/>

            <TextView
                android:id="@+id/tvStoreName"
                android:textStyle="bold"
                android:paddingRight="10dp"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="20dp"
                android:layout_gravity="left"
                android:layout_alignParentTop="true"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:textColor="#000000"/>

我现在可以成功获取要显示的名称，但我不知道如何根据响应显示图标

Answer 1

在onBindViewHolder里面做这个

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

     StoreListCard storeListCard =  storeListCards.get(position);
     holder.tvStoreName.setText(storeListCard.getName());

       if (storeListCard.getWifi()){
             holder.ivWifiIcon.setImageResource(R.drawable.your_wifie_icon);
        } else {
        holder.ivWifiIcon.setImageResource(R.drawable.any_place_holder_icon);
       }
}

Answer 2

试试这个，

private void parseData(JSONArray array){

    for(int i = 0; i<array.length(); i++) {
        StoreListCard storeListCard = new StoreListCard();
        JSONObject json = null;
        try {
            json = array.getJSONObject(i);

            //Parse name
            storeListCard.setName(json.getString(Config.TAG_NAME));
            storeListCard.setWifi(json.getBoolean(Config.TAG_WIFI));

        } catch (JSONException e) {
            e.printStackTrace();
        }
        storeListCards.add(storeListCard);
    }

}

在卡适配器类中。

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

    StoreListCard storeListCard =  storeListCards.get(position);
    holder.tvStoreName.setText(storeListCard.getName());
    if(storeListCard .getWifi())
    {
int id = getResources().getIdentifier("yourpackagename:drawable/" + imageName, null, null)
    holder.ivWifiIcon.setImageResource(id);
    }
}

从JSON响应中设置cardview中的图像

2 个答案: