//設(shè)置緩存路徑File httpCacheDirectory = new File(CommonApplication.getInstance().getCacheDir(), "responses");//設(shè)置緩存 10MCache cache = new Cache(httpCacheDirectory, 10 * 1024 * 1024);//創(chuàng)建OkHttpClient，并添加攔截器和緩存代碼OkHttpClient client = new OkHttpClient.Builder()    .addNetworkInterceptor(new CacheInterceptor(CommonApplication.getInstance()))    .cache(cache).build();

public class CacheInterceptor implements Interceptor {  private Context mContext;  public CacheInterceptor(Context context) {    mContext = context;  }  @Override  public Response intercept(Chain chain) throws IOException {    Request request = chain.request();    if (NetworkUtils.isNetworkAvailable(mContext)) {//沒網(wǎng)強(qiáng)制從緩存讀取(必須得寫，不然斷網(wǎng)狀態(tài)下，退出應(yīng)用，或者等待一分鐘后，就獲取不到緩存）      request = request.newBuilder()          .cacheControl(CacheControl.FORCE_CACHE)          .build();    }    Response response = chain.proceed(request);    Response responseLatest;    if (NetworkUtils.isNetworkAvailable(mContext)) {      int maxAge = 60; //有網(wǎng)失效一分鐘      responseLatest = response.newBuilder()          .removeHeader("Pragma")          .removeHeader("Cache-Control")          .header("Cache-Control", "public, max-age=" + maxAge)          .build();    } else {      int maxStale = 60 * 60 * 6; // 沒網(wǎng)失效6小時(shí)      responseLatest = response.newBuilder()          .removeHeader("Pragma")          .removeHeader("Cache-Control")          .header("Cache-Control", "public, only-if-cached, max-stale=" + maxStale)          .build();    }    return responseLatest;  }}