Open Radar

 
Summary:

If an NSTextContainer is provided in -[UITextView initWithFrame:textContainer:], the resulting object does not conform to UITextInputTraits, and will crash when the keyboard is displayed.

Steps to Reproduce:

  UITextView *nilContainerTextView = [[UITextView alloc] initWithFrame:CGRectZero textContainer:nil];
  NSTextContainer *container = [[NSTextContainer alloc] initWithSize:CGSizeZero];
  NSLog(@"%d", [nilContainerTextView autocapitalizationType]);
  NSLog(@"%d", [containerTextView autocapitalizationType]);  // Crashes


Expected Results:

Should output "2" for both NSLog() statements

Actual Results:

Crashes with "-[UITextView autocapitalizationType]: unrecognized selector sent to instance" in the last NSLog().

Regression:

Yes (vs OS X equivalents)

Notes:

I am trying to port TextLayoutDemo from OS X to iOS 7:
   https://developer.apple.com/library/mac/#samplecode/TextLayoutDemo/Introduction/Intro.html

I would expect this to be trivial, but I keep running into crashing problems like this one. See also radar: //14568899. I would like an piece of example code demonstrating editable multi-column layout on iOS 7.