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while i compile my application on sdk and on my phone i see the same application 3 times over the phone. Only 1 of them works and the other 2 throws exeption. this is the printscreen of the problem.
That sounds very much like you’ve marked all the activities in your application with categor
android.intent.category.LAUNCHER— that’s what makes the activities show up in the launcher. Naturally, if one of your activities gets launched when it’s not expecting to be, it’ll likely crash. But you’ll have to post more info (like a stack trace) to tell for sure.