> list = new ArrayList<>();
try {
JSONArray jsonArray = new JSONArray(response);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
map = new HashMap<>();
if (jsonObject != null) {
int id = jsonObject.optInt("id");
String name = jsonObject.optString("name");
String content = jsonObject.optString("content");
boolean favor = jsonObject.optBoolean("favor");
JSONArray son = jsonObject.getJSONArray("son");
map.put("id", id);
map.put("name", name);
map.put("content", content);
map.put("favor", favor);
}
list.add(map);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
}
```
2.2使用 Gson 解析工具
引入工具包
implementation 'com.google.code.gson:gson:2.8.5'
使用AS插件 GsonFormat
新建 JavaBean 类，我这里命名为 chapter，将json数据复制到 GsonFormat ，点击OK，自动根据 json 结构生成 JavaBean 类。
声明全局变量
public ArrayList<chapter> list = new ArrayList<>();
解析过程
```java
//解析json传入list
private void showResponse (final String response) {
Gson gson = new Gson();
Type listType = new TypeToken>() {
}.getType();
list = gson.fromJson(response, listType);
Message msg = new Message();
msg.what = 1;
handler.sendMessage(msg);
}
```
注：不同结构的 json 数据写法也不太相同，点击链接查看官方文档
2.3阿里的fastjson解析工具（没用过）
#### 3.在RecyclerView中展示数据
我们已经获得一个封装好的 list，使用 handler 方法更新 ui
```JAVA
//在RecycleView中展示数据,点击item页面跳转
@SuppressLint("HandlerLeak")
public Handler handler = new Handler(){
@Override
public void handleMessage(Message msg) {
switch (msg.what){
case 1:
RecyclerView recyclerview = findViewById(R.id.recy);
if (recyclerview.getItemDecorationCount() == 0 ) {
recyclerview.addItemDecoration(new DividerItemDecoration(ChapterActivity.this, DividerItemDecoration.VERTICAL));
}
chapter_itemAdapter adapter = new chapter_itemAdapter(list,ChapterActivity.this,Word);
//设置布局格式
recyclerview.setLayoutManager(new LinearLayoutManager(ChapterActivity.this));
recyclerview.setAdapter(adapter);
break;
}
}
};
```
创建适配器 chapter_itemAdapter
```java
public class chapter_itemAdapter extends RecyclerView.Adapter {
private ArrayList list;
public Context context;
private LayoutInflater inflater;
chapter_itemAdapter(ArrayList list, Context context){
this.context = context;
this.list = list;
inflater = LayoutInflater.from(context);
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = inflater.inflate( R.layout.recyclerview_item , parent, false);
return new ViewHolder(view);
}
@Override
public int getItemCount() {
return list.size();
}
@Override
public void onBindViewHolder(@NonNull final ViewHolder holder, int position) {
holder.recy_name.setText(Html.fromHtml(Objects.requireNonNull(list.get(position).getName())).toString());
}
class ViewHolder extends RecyclerView.ViewHolder{
TextView recy_name;
ViewHolder(View itemView) {
super(itemView);
recy_name = itemView.findViewById(R.id.recy_name);
}
}
}
```
对应布局 recyclerview_item
```xml
```
有关RecyclerView更多用法点击链接跳转