I'm not shure how to become access to the RequestConfiguration class. I don't use ArcGIS android. I use (or try to use) ArcGIS it with Java FX. Your link redirect me to this url " http://android:8080/docs/api/java/doc/api-doc/arcgis-java/reference/com/esri/arcgisruntime/io/RequestConfiguration.html#setProxyInfo(java.lang.String , int)" which I can't open because the host "android:8080" not exist and I'm not hosting anything like that here on my computer.
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