我想得到对象数组(JSON),然后得到一些值。
我尝试过像这里做的所有事情:How to get array of objects with gson/retrofit?
但是我有来自Android Studio的提示错误,如Cannot resolve method 'getId()'
JSON:
[{
"id": "551454",
"rights": ["auth", "objects-prepaid-get"],
"services": [{
"service_id": "103",
"options": {
"sum": 0
},
"dismisable": 0
}],
"date_activate": "2017-11-11",
"period": {
"date_action": "2019-03-29",
"after": 0
},
"ast": {
"id": "3",
"services": [{
"service_id": "4",
"dismisable": 0
}, {
"service_id": "5",
"dismisable": 0
}]
},
"ast_s": {
"id": "82",
"services": [{
"service_id": "4",
"dismisable": 0
}, {
"service_id": "5",
"dismisable": 0
}],
"date": "2019-03-29",
"dissmissable": 1
}
}]
我在Activity中做了什么:
onCreate(){
...
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(BASE_URL)
.addConverterFactory(GsonConverterFactory.create())
.build();
SomeAPI userClient2 = retrofit.create(SomeAPI.class);
getUserInfo();
}
private void getUserInfo() {
token = AppPreferences.getStringFromSh(getApplicationContext());
Call<List<User>> call2 = userClient2.getInfoUser("Bearer " + token);
call2.enqueue(new Callback<List<User>>() {
@Override
public void onResponse(Call<List<User>> call, Response<List<User>> response) {
if (response.code() == 200){
id = response.body().getId(); //id - List<Integer>
tvAccount.append(" " + id);
}
else {
Toast.makeText(UserProfile.this, "Err while loading", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onFailure(Call<List<User>> call, Throwable t) {
Toast.makeText(UserProfile.this, "error!", Toast.LENGTH_SHORT).show();
}
});
}
在接口我有:
@GET("objects")
Call<List<User>> getInfoUser(@Header("Authorization") String token);
在User.class我有:
public class User {
private List<Integer> id;
public List<Integer> getId(){
return id;
}
public void setId(List<Integer> id){
this.id = id;
}
}
我的代码出了什么问题?我在哪里犯了错误?
试过:
id = response.body().get(0).getId();
tvAccount.append(" " + id);
获得:
Expected BEGIN_ARRAY but was StRING at line 1 column 9 path $[0].id
似乎response.body()
返回List<User>
所以你必须访问列表中的一个项目。例:
response.body().get(0).getId();
你不能直接从列表中获取getId()
List<User> listUser=response.body();
如果您希望有多个用户,则应浏览整个用户列表以获取Id
for (User user : listUser)
{
List<Integer> listIds=user.getId();
}