Android emulator (unfortunately app has stopped) [duplicate]

Question

This question already has answers here:

java.lang.noclassdeffounderror: org.ksoap2.serialization.SoapObject (3 answers)

Closed 8 years ago.

I am using eclipse to develop an android app. I am using a web service to connect to SQL Server database. When I run the app on the emulator, an error message appears saying: "Unfortunately (my app name) has stopped". I don't know what is the reason for that message.

The application was work correctly without errors. But I don't know what I added to stop it

The LogCat shows:

E/AndroidRuntime(805): FATAL EXCEPTION: Thread-80
E/AndroidRuntime(805): java.lang.NoClassDefFoundError: org.ksoap2.serialization.SoapObject
E/AndroidRuntime(805):  at com.project.sbms.wbsCall.Call(wbsCall.java:27)
E/AndroidRuntime(805):  at com.project.sbms.wbsThread.run(wbsThread.java:14)

Answer 1

You don't have ksoap2 or the ksoap2 serialization package on your path. Make sure the JAR file is in the /libs folder, that way it will be automatically included by android.