Open Radar

 
Summary:

If scrollEnabled is set to NO on a UITextView, and it is resized with autolayout, then giving it a custom NSLayoutManager will crash with the exception "*** -[NSLayoutManager glyphRangeForTextContainer:]: given container does not appear in the list of containers for this NSLayoutManager.'"

Steps to Reproduce:

  UITextView *textView = [[UITextView alloc] initWithFrame:CGRectZero];
  [textView setTranslatesAutoresizingMaskIntoConstraints:NO];
  [self.view addSubview:textView];

  NSDictionary *views = NSDictionaryOfVariableBindings( textView );
  [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-[textView]-|" options:0 metrics:nil views:views]];
  [self.view addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-[textView]-|" options:0 metrics:nil views:views]];

  textView.scrollEnabled = NO;

  self.textStorage = [[NSTextStorage alloc] initWithString:@"This is some stuff"];
  self.layoutManager = [[NSLayoutManager alloc] init];
  [self.textStorage addLayoutManager:self.layoutManager];
  [self.layoutManager addTextContainer:textView.textContainer];


Expected Results:

This should behave the same with or without the scrollEnabled=NO.

Actual Results:

Without scrollEnabled=NO, this works as expected (the text appears). With scrollEnabled=NO, this crashes as noted:

'*** -[NSLayoutManager glyphRangeForTextContainer:]: given container does not appear in the list of containers for this NSLayoutManager.'


Regression:

Unknown.

Notes:

I've seen this crash using autosizing as well (without autolayout), but have had more trouble reproducing it as reliably. I believe the problem is actually just when the text view resizes rather than autolayout specifically.

The same behavior occurs if a custom NSTextContainer is passed to the text view:

  self.textContainer = [[NSTextContainer alloc] initWithSize:self.view.bounds.size];
  UITextView *textView = [[UITextView alloc] initWithFrame:self.view.bounds textContainer:self.textContainer];