This is the error Android studio is showing me when i am pressing the button
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What is a NullPointerException, and how do I fix it?
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How do I fix the error where I cannot make a static reference to a non-static input field?
56098
NSInvalidUnarchiveOperationException: Could not instantiate class named NSLayoutConstraint
2948
What does a "Cannot find symbol" or "Cannot resolve symbol" error mean?
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System.NullPointerException: Attempt to de-reference a null object:
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NoSuchMethodError error for getActionBar() (API-8)
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Debugging Issues (Android Eclipse)
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Why do I get "Exception; must be caught or declared to be thrown" when I try to compile my Java code?
157165
Android HTTPPost Returns Error "Method not allowed."
132458
this class is not key value coding-compliant for the key givenName
24534
frequent issues arising in android view, Error parsing XML: unbound prefix
45605
Android Studio suddenly cannot resolve symbols
35590
How to fix NullPointerException in Java?
127023
Importing google-play-service library showing a red X next to this reference android
51071
"Selection cannot be launched and there are no recent launches” when Eclipse for Android Project Dev
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Error: "an object reference is required for the non-static field, method or property..."
45424
Android widget stuck in "please login before using this widget" message