mudzakkir toha

Sorry! The application name_of_app (process name_of_process) has stopped unexpectedly. Please try again.

How to resolve this error:

Sorry! The application name_of_app (process name_of_process) has stopped unexpectedly. Please try again.

And the log generate this error:

java.lang.RuntimeException: Unable to instantiate activity name_of_activity{Class_of_Your_activity}: java.lang.ClassNotFoundException: Class_of_Your_activity in loader PathClassLoader

Follow this discussion, and see inazaruk’s answer (Top no.1 answer).
Go to your project that uses .jar files (i.e. project under test). Click right button -> Properties-> Java Build Path -> Order and Export -> check libraries there

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