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Android Studio (Java) - counter doesn't update & app crash on empty input

 
Greenhorn
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First time doing Android Studio and I encountered these errors where my counter will not increase and my app crashes on null input.

Any ideas? Tried for like an hour to get my head around it, but I just can't see why it's not doing it.

Edit:
Counter output should increase depending on how many times the same number is guessed

img.png
[Thumbnail for img.png]
Image of GUI
 
Denis Neagu
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not sure why it fixed it, but it worked

put counter as global var & created a public void for it then called it
 
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I doubt a global variable is the proper way to do this. See https://developer.android.com/topic/libraries/architecture/saving-states

Also, this is redundant and looks confused:

Not sure what you think you're doing there but it's equivalent to this:

 
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