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想藉由在程式更改ConstraintBottom.priority變更View位置 不過都會遇到當機狀況無法解決 @property (strong, nonatomic) IBOutlet NSLayoutConstraint *pageBarConstraintBottom; - (void)statusBarOrientationChange:(NSNotification *)notification{ UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation]; if ( (orientation == UIInterfaceOrientationLandscapeRight) || (orientation ==UIInterfaceOrientationLandscapeLeft) ) { _pageBarConstraintBottom.priority = UILayoutPriorityRequired; ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 每次在這裡當機 } } -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 122.116.79.81 ※ 文章網址: https://www.ptt.cc/bbs/MacDev/M.1499917407.A.4D6.html
Blueshiva: 你檢查一下 _pageBarConstraintBottom.priority原本是 07/13 13:32
Blueshiva: 不是設成1000,設成1000之後就不能改,初始要用999才行 07/13 13:33
duckscorpion: 感謝 07/13 14:41