For iOS develop,the debug view hierarchy didn't work

Question

when I click the debug view hierarchy in Xcode, it shows nothing and the console alert:

Assertion failure in -[UITextView _firstBaselineOffsetFromTop], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit/UIKit-3512.60.12/UITextView.m:1683

what confused me is that all my project just this viewController occur it.

It's my first time meeting this, could anyone give me some advice.

See: http://stackoverflow.com/questions/37068231/assertion-failure-in-uitextview-firstbaselineoffsetfromtop Did you try with Xcode 8? — wolfrevo, Jul 19 '16 at 13:54
No，just Xcode 7.2 I had solved this problem by adding category — 无夜之星辰, Jul 20 '16 at 09:41

score 2 · Accepted Answer · edited May 23 '17 at 12:08

From Assertion failure in UITextView _firstBaselineOffsetFromTop

Write below in your project.

For obj-C

@interface UITextView(MYTextView)

@end

@implementation UITextView (MYTextView)
- (void)_firstBaselineOffsetFromTop {

}

- (void)_baselineOffsetFromBottom {

}
@end

For swift

extension UITextView {
    func _firstBaselineOffsetFromTop() {
    }
    func _baselineOffsetFromBottom() {
    }
}

For iOS develop,the debug view hierarchy didn't work

1 Answers1