lemnar questions

lemnar answers

• How does Objective-c handle messages sent to nil objects?
• How to wake an app when screensaver is displayed
• How to animate the height change of an section header in UITableView?
• How to cancel my own test in-app-purchase transaction? (so I can test again)
• iPhone UITabbar item double-click pops controllers
• UILabel get CGRect for substring of text
• Customize Keyboard in tvOS
• UITextField - UIKeyboardTypeDecimalPad on iPad?
• Apple Mach-O Linker (id) Error
• Resize UILabel based on content