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ManWithBear/NSLayoutConstraints debug

Created October 18, 2016 11:48
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Help to understand layout issues
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NSLayoutConstraints debug
1. Symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints.
2. Add debug command:
- ObjC: po [[UIWindow keyWindow] _autolayoutTrace]
- Swift: expr -l objc++ -O -- [[UIWindow keyWindow] _autolayoutTrace]
3. Colorfy bad views:
expr ((UIView *)0x7f9ea3d43410).backgroundColor = [UIColor redColor]
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