The resource could not be loaded because the App Transport Security policy requires the use of a secure connection

Transport security is provided in iOS 9.0 or later, and in OS X v10.11 and later.
So by default only https calls only allowed in apps. To turn off App Transport Security add following lines in info.plist file...
NSAppTransportSecurity
NSAllowsArbitraryLoads
 

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java.lang.NoClassDefFoundError: org/apache/xerces/jaxp/datatype/XMLGregorianCalendarImpl$Parser

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