###HttpCache on Android
CacheFlush() is never called. When calling it on
Uno.Platform2.Application.EnteringBackground jni is failing. This is because HttpRequest.java
CacheFlush() is not static.
CacheFlush() has to be called on Android to save the cache to disk.
Is the HttpMessageHandler using HttpURLConnection/HttpsURLConnection or is it using DefaultHttpClient/AndroidHttpClient. According to Android documentation “there is no platform-provided cache for DefaultHttpClient or AndroidHttpClient.” I’m wondering because I’m not sure if the cache really is working on Android.