如何从Retrofit onResponse()更新活动/片段UI?
我要在我的下一个Android项目中使用Retrofit 2.1.0。我想使用设计模式,因此为每个REST调用创建单独的类,即
IBalanceService.java
public Interface IBalanceService{ @GET("users/{username}")
void getUser(@Path("username") String username, Callback<User> cb);
}
BalanceRestClient.java
public class BalanceRestClient{ String username = "Makarov";
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("http://hovermind.com")
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(rxAdapter)
.build();
IBalanceService bs = retrofit.create(IBalanceService.class);
Call<User> call = apiService.getUser(username);
call.enqueue(new Callback<User>() {
@Override
public void onResponse(Call<User> call, Response<User> response) {
User user = response.body();
// update Activity/Fragment from here
}
@Override
public void onFailure(Call<User> call, Throwable t) {
// Log error here since request failed
}
});
}
BalanceActivity.java
public BalanceActivity extends Activity{ // BalanceRestClient will update some UI elements
}
如何通过onResponse()更新活动/片段中的UI?
附加信息:
最小SDK:19个
目标SDK:23个
使用OkHttp和gson改造的2.1.0
回答:
public class BalanceRestClient { private static BalanceRestClient instance;
private IBalanceService request;
private BalanceRestClient() {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("http://hovermind.com")
.addConverterFactory(GsonConverterFactory.create())
.addCallAdapterFactory(rxAdapter)
.build();
request = retrofit.create(IBalanceService.class);
}
public static synchronized BalanceRestClient getInstance() {
if (instance == null)
instance = new BalanceRestClient();
return instance;
}
public void getRequest(String userName, YourCustomeCallback callback) {
Call<User> call = apiService.getUser(username);
call.enqueue(new Callback<User>() {
@Override
public void onResponse(Call<User> call, Response<User> response) {
User user = response.body();
callback.onResponse(user);
}
@Override
public void onFailure(Call<User> call, Throwable t) {
// Log error here since request failed
}
});
}
}
- 创建一个单例类。它只初始化一次请求。
- 创建一个自定义回调,它将使您的响应返回给UI。
- 在要使用它的地方调用BalanceRestClient.getInstance.getRequest(params ..)。
以上是 如何从Retrofit onResponse()更新活动/片段UI? 的全部内容, 来源链接: utcz.com/qa/407147.html