forkingdog / forkingdog/FDStackView
在iOS10上removeAllSubviews后，再调用addArrangedSubview Crash
- Dominant language
- Objective-C
- Stars
- 2.5k
- Forks
- 310
- PR merge metrics
- No merged PRs in 30d
Description
在iOS10上removeAllSubviews后，再调用addArrangedSubview Crash，什么原因？
报错：
Assertion failure in -[FDStackView _layoutEngine_didAddLayoutConstraint:roundingAdjustment:mutuallyExclusiveConstraints:], /BuildRoot/Library/Caches/com.apple.xbs/Sources/UIKit/UIKit-3600.7.47/NSLayoutConstraint_UIKitAdditions.m:649
invalid mode 'kCFRunLoopCommonModes' provided to CFRunLoopRunSpecific - break on _CFRunLoopError_RunCalledWithInvalidMode to debug. This message will only appear once per execution.
Contributor guide
No contributing guide indexed for this repository
Research direction
Start by reproducing the sequence of removeAllSubviews followed by addArrangedSubview on iOS 10, using the reported FDStackView assertion as the failure point. Trace the involved layout-constraint operations and determine the cause and a verified resolution for this sequence.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- ios, objective-c
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 25/100