java.lang.NullPointerException

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  • java.lang.NullPointerException at com.example.bang.stepuptest2.ScannerActivity.onDeviceSelected(ScannerActivity.java:64) at com.mbientlab.bletoolbox.scanner.BleScannerFragment$2.onItemClick(BleScannerFragment.java:205) at android.widget.AdapterView.performItemClick(AdapterView.java:299) at android.widget.AbsListView.performItemClick(AbsListView.java:1156) at android.widget.AbsListView$PerformClick.run(AbsListView.java:2947) at android.widget.AbsListView$3.run(AbsListView.java:3681) at android.os.Handler.handleCallback(Handler.java:733) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:149) at android.app.ActivityThread.main(ActivityThread.java:5268) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:515) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:609) at dalvik.system.NativeStart.main(Native Method)
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