Posts by Caio Guilherme • 1 point

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  A: Java Attempt to invoke virtual method error 'android.view.Window$Callback android.view.Window.getCallback()' on a null Object Reference

  I managed to solve. I took Fragment’s Button and moved straight to Activity by placing all View calls and references directly on Activity.

  java method nullpointerexception

  answered 6 years, 2 months ago Caio Guilherme 1

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  Q: Java Attempt to invoke virtual method error 'android.view.Window$Callback android.view.Window.getCallback()' on a null Object Reference

  Folks need a help with an error in a method of my code. Basically I have a Framelayout that loads two Fragments. When starting the APP it loads the first Fragment with 3 Textedits and a button. When…

  java method nullpointerexception

  asked 6 years, 2 months ago Caio Guilherme 1