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This exception has no message.
java.lang.NullPointerException: 	at android.app.Activity.startActivityForResult(Activity.java:3190)	at pl.piotrek.panitball.BluetoothConnection.uruchamianie(BluetoothConnection.java:24)	at pl.piotrek.panitball.MainClass.doDraw(MainClass.java:86)