Chengjiong questions

Chengjiong answers

• Discrepancy between sizeWithFont:constrainedToSize:lineBreakMode: and textView.contentSize.height
• Drawing 1 pixel wide paths in iOS
• MPMoviePlayerController seek forward in fullscreen mode until end is stuck
• iOS5 What does "Discarding message for event 0 because of too many unprocessed messages" mean?
• What is the difference between the app ID and the bundle ID? Where is the app ID in the Xcode project?