我想在我的下一个 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 Activity/fragment 中的 UI?
Additional Info:
min SDK : 19
target SDK : 23
Retrofit 2.1.0 with OkHttp and gson
最佳答案
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。
- 创建自定义回调,将您的响应返回给界面。
- 在您想要使用的地方调用 BalanceRestClient.getInstance.getRequest(params..)。
关于java - 如何从 Retrofit onResponse() 更新 Activity/Fragment UI?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/41160019/