retrofit2

接口 Callback<T>

类型参数:

T - Successful response body type.

public interface Callback<T>

Communicates responses from a server or offline requests. One and only one method will be invoked in response to a given request.

Callback methods are executed using the Retrofit callback executor. When none is specified, the following defaults are used:

• Android: Callbacks are executed on the application's main (UI) thread.
• JVM: Callbacks are executed on the background thread which performed the request.

方法概要

限定符和类型	方法和说明
void	onFailure(Call<T> call, java.lang.Throwable t) Invoked when a network exception occurred talking to the server or when an unexpected exception occurred creating the request or processing the response.
void	onResponse(Call<T> call, Response<T> response) Invoked for a received HTTP response.

方法详细资料

onResponse

void onResponse(Call<T> call,
                Response<T> response)

Invoked for a received HTTP response.

Note: An HTTP response may still indicate an application-level failure such as a 404 or 500. Call Response.isSuccessful() to determine if the response indicates success.

onFailure

void onFailure(Call<T> call,
               java.lang.Throwable t)

Invoked when a network exception occurred talking to the server or when an unexpected exception occurred creating the request or processing the response.