Is the object retained if I call performSelector:withObject:afterDelay:?
Explain retain counts
Name the application thread from where uikit classes should be used?
What is nspersistentstorecoordinator?
What is use of nsoperation?
Give example scenarios when an application goes into inactive state?
Where can you test Apple iPhone apps if you don’t have the device?
What language is ios based on?
What does ios stand for in texting?
. Why an app on iOS device behaves differently when running in foreground than in background?
What is the use of controller object UIApplication?
Which is easier android or ios development?
Will iphone 7 get ios 13?