Which of the following is the correct way to vertically center the UITextField text?

What will happen when the tableView:accessoryButtonTappedForRowWithIndexPath UITableViewDelegate method is called, in a case where there is a custom UIControl subclass in the standard accessory view?

Which will create a singleton class that is compatible with ARC?

Which compares NSString while ignoring case?

How can an alert message/pop-up dialog box be shown in iOS?

Which will get the position of UIView within the entire UIWindow?

Which will make an iPhone app return its own version number?

Which changes the color of the pagination dots of UIPageControl?

Why does the error, 'EXC_BAD_ACCESS' occur?

Which is not used to find an object contained in NSMutableArray?

Which will print the value of a Boolean flag in NSLog?