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Tip: To quickly open a file in Android Studio, double-tap the Shift key to bring up a floating search bar, and type the name of the file you want to open.
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If you get an INSTALL_FAILED_INVALID_APK error when building, try doing a ‘Build' -> ‘Clean Project' in Android Studio.
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Note: If Android Studio encounters Cannot resolve symbol errors when writing this code, press
Alt + Enter
or (Option + Return
on Mac) to import the missing symbols.