How to check whether an iPhone or iPad is upside down or face up
2019ë
11ì 28ìŒAbout 2 min
How to check whether an iPhone or iPad is upside down or face up êŽë š
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How to check whether an iPhone or iPad is upside down or face up | UIKit - free Swift example code
How to check whether an iPhone or iPad is upside down or face up
Available from iOS 3.2