java.lang.NullPointerException: This exception has no message.

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via Stack Overflow by Kunwarpreet Singh
, 1 year ago
This exception has no message.
java.lang.NullPointerException:
at com.atry.MainActivity.openBT(MainActivity.java:120)
at com.atry.MainActivity$1.onClick(MainActivity.java:55)
at android.view.View.performClick(View.java:4439)
at android.widget.Button.performClick(Button.java:139)
at android.view.View$PerformClick.run(View.java:18395)
at android.os.Handler.handleCallback(Handler.java:725)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5317)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1102)

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