这个问题可能是由于使用了 OkHttp 的缓存机制导致的。解决方式是在 OkHttp 的拦截器中添加一个条件，如果发现缓存已经存在，就直接返回缓存，否则发起请求。

下面是一个示例代码：

OkHttpClient okHttpClient = new OkHttpClient.Builder()
        .addInterceptor(new Interceptor() {
            @Override
            public okhttp3.Response intercept(Chain chain) throws IOException {
                Request request = chain.request();
                okhttp3.Response response = chain.proceed(request);

                String cacheControl = request.cacheControl().toString();
                if (TextUtils.isEmpty(cacheControl)) {
                    cacheControl = "public, max-age=60";
                }

                if (response.code() == 200) {
                    return response.newBuilder()
                            .header("Cache-Control", cacheControl)
                            .build();
                } else {
                    return response;
                }
            }
        })
        .build();

Request request = new Request.Builder()
        .url(url)
        .build();

okHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.e(TAG, "onFailure: " + e.getMessage());
            }

            @Override
            public void onResponse(Call call, okhttp3.Response response) throws IOException {
                String result = response.body().string();
                Log.d(TAG, "onResponse: " + result);
            }
        });