使用OKHttp进行改造可以在离线时使用缓存数据我正在尝试使用Retrofit和OKHttp来缓存HTTP响应。我按照这个要点,结束了这段代码:File httpCacheDirectory = new File(context.getCacheDir(), "responses");HttpResponseCache httpResponseCache = null;try {
httpResponseCache = new HttpResponseCache(httpCacheDirectory, 10 * 1024 * 1024);} catch (IOException e) {
Log.e("Retrofit", "Could not create http cache", e);}OkHttpClient okHttpClient = new OkHttpClient();okHttpClient.setResponseCache(httpResponseCache);api = new RestAdapter.Builder()
.setEndpoint(API_URL)
.setLogLevel(RestAdapter.LogLevel.FULL)
.setClient(new OkClient(okHttpClient))
.build()
.create(MyApi.class);这是带有Cache-Control标头的MyApipublic interface MyApi {
@Headers("Cache-Control: public, max-age=640000, s-maxage=640000 , max-stale=2419200")
@GET("/api/v1/person/1/")
void requestPerson(
Callback<Person> callback );首先,我在线请求并检查缓存文件。有正确的JSON响应和标题。但是当我尝试离线请求时,我总是得到RetrofitError UnknownHostException。我还有什么办法让Retrofit从缓存中读取响应吗?编辑: 因为OKHttp 2.0.x HttpResponseCache是Cache,setResponseCache是setCache
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