【发布时间】:2016-08-01 11:37:46
【问题描述】:
我是 Retrofit 库的新手。我正在开发一个应用程序,我必须在其中进行多次 API 调用,但是当我尝试进行第一次 API 调用时,这个问题一直困扰着我......
我面临的问题是,每当我调用改造的异步调用方法时,onResponse 方法中的功能就会运行 2 次......
这是我异步调用 API 调用时的代码...
final ApiModule apiService = ApiServiceGenerator.createService(ApiModule.class);
Call <ConfigResponse> call = apiService.getConfig();
call.enqueue(new Callback<ConfigResponse>() {
@Override
public void onResponse(Call<ConfigResponse> call, Response<ConfigResponse> response) {
try {
if (response.isSuccessful()) {
Log.e("MyTag", "This is running");
}
} catch(Exception e) {
e.printStackTrace();
}
}
@Override
public void onFailure(Call<ConfigResponse> call, Throwable t) {
e.printStackTrace();
}
});
当我在设备上运行应用程序并看到我的 android studio 的记录器时,它会向我显示日志消息 -
E/MyTag: This is running
E/MyTag: This is running
这里好像跑了2次..!!
我不明白为什么它运行了 2 次。 请帮我解决这个问题...
只是为了获得更多帮助... 我已经这样实现了我的代码。
ApiModule 接口(我在其中定义了我的 API 调用 URL)
public abstract interface ApiModule {
@GET("config")
Call<ConfigResponse> getConfig();
}
ApiServiceGenerator 是这样的 -
public class ApiServiceGenerator {
public static final String API_BASE_URL = "https://www.example.com/";
private static OkHttpClient httpClient = new OkHttpClient.Builder()
.addInterceptor(new Interceptor() {
@Override
public okhttp3.Response intercept(Chain chain) throws IOException {
Request newRequest = chain.request().newBuilder().addHeader("App-Secret", "some-secret-key").build();
return chain.proceed(newRequest);
}
})
.addInterceptor(new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY)) // Just For logging
.readTimeout(60, TimeUnit.SECONDS)
.connectTimeout(60, TimeUnit.SECONDS)
.build();
Gson gson = new GsonBuilder()
.registerTypeAdapterFactory(new ArrayAdapterFactory())
.create();
private static Retrofit.Builder builder =
new Retrofit.Builder()
.baseUrl(API_BASE_URL)
.addConverterFactory(GsonConverterFactory.create(new GsonBuilder().registerTypeAdapterFactory(new ArrayAdapterFactory()).create()));
public static <S> S createService(Class<S> serviceClass) {
Retrofit retrofit = builder.client(httpClient).build();
return retrofit.create(serviceClass);
}
public static Retrofit retrofit() { // For Error Handing when non-OK response is received from Server
OkHttpClient httpClient = new OkHttpClient.Builder().build();
OkHttpClient client = httpClient;
return builder.client(client).build();
}
}
【问题讨论】:
标签: android api retrofit retrofit2 asynccallback