Use of external Jar in android service -

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I am having a problem doing this work. In my application, I create an IntentService to offload some of the work that should be done in the background on a given thread.

This application is fine, but when it reaches the line related to the external jar, an error "can not be referenced in the class ** ** method"

This one I've been compelled for some time, so I'm grateful for some help here.


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