无法同时满足与AVPlayerViewController约束警告镶嵌在故事板 [英] Unable to simultaneously satisfy constraints Warnings with AVPlayerViewController embedded in storyboard

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本文介绍了无法同时满足与AVPlayerViewController约束警告镶嵌在故事板的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我想通过故事板由一个独立的视图控制器嵌入完全建立一个AVPlayerViewController。

I'm trying to set up an AVPlayerViewController completely through storyboards by embedding in a separate View Controller.

步骤：


  1. 创建于X code单查看应用程序。

  2. VC嵌入导航控制器。

  3. 在底部添加工具栏。（别在上海华（前置，底部布局指南，高度（44））。

  4. 添加父视图控制器容器视图。（别在上海华（前置，后置），顶部布局指南，工具栏上）。

  5. 删除自带容器视图默认视图控制器。

  6. 将AV播放器 - 视图 - 控制器从对象库的对象。

  7. 从容器视图连接嵌入到赛格瑞AV播放视图控制器。

NO $ C $下加入。

这是我的故事板如下：

查看层次：

一切罚款运行：
但问题是：
当我运行它，我在调试器中得到这些警告：

Everything runs fine: BUT THE PROBLEM IS: As soon as i run it I get these warnings in the debugger:

2015-09-30 12:58:35.904 AVPlayerTest[9352:446772] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7f93259513b0 h=-&- v=-&- _UIBackdropContentView:0x7f9325860000.width == _UIBackdropView:0x7f932585e990.width>",
    "<NSLayoutConstraint:0x7f932592bc70 H:|-(14)-[UILabel:0x7f9325925590'Hi-Speed Scrubbing']   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592bcf0 H:[UILabel:0x7f9325925590'Hi-Speed Scrubbing']-(14)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592b770 H:|-(0)-[_UIBackdropView:0x7f932585e990]   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b7f0 H:[_UIBackdropView:0x7f932585e990]-(0)-|   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b450 H:|-(0)-[UIView:0x7f932585e830]   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592b4d0 H:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932594aa10 'UIView-Encapsulated-Layout-Width' H:[AVAlphaUpdatingView:0x7f932585e310(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7f932592bcf0 H:[UILabel:0x7f9325925590'Hi-Speed Scrubbing']-(14)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-09-30 12:58:35.905 AVPlayerTest[9352:446772] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7f93259513b0 h=-&- v=-&- _UIBackdropContentView:0x7f9325860000.width == _UIBackdropView:0x7f932585e990.width>",
    "<NSLayoutConstraint:0x7f932592bdd0 H:|-(14)-[UILabel:0x7f9325929bb0'Slide your finger up to a...']   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592be50 H:[UILabel:0x7f9325929bb0'Slide your finger up to a...']-(14)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592b770 H:|-(0)-[_UIBackdropView:0x7f932585e990]   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b7f0 H:[_UIBackdropView:0x7f932585e990]-(0)-|   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b450 H:|-(0)-[UIView:0x7f932585e830]   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592b4d0 H:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932594aa10 'UIView-Encapsulated-Layout-Width' H:[AVAlphaUpdatingView:0x7f932585e310(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7f932592be50 H:[UILabel:0x7f9325929bb0'Slide your finger up to a...']-(14)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-09-30 12:58:35.906 AVPlayerTest[9352:446772] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSLayoutConstraint:0x7f932592b5e0 V:|-(>=0)-[UIView:0x7f932585e830]   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592b660 V:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592af50 V:[UIView:0x7f932585e830(44)]>",
    "<NSLayoutConstraint:0x7f9325952c30 'UIView-Encapsulated-Layout-Height' V:[AVAlphaUpdatingView:0x7f932585e310(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7f932592b660 V:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-09-30 12:58:35.907 AVPlayerTest[9352:446772] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7f93259513b0 h=-&- v=-&- _UIBackdropContentView:0x7f9325860000.width == _UIBackdropView:0x7f932585e990.width>",
    "<NSLayoutConstraint:0x7f932592ba00 H:|-(0)-[UIView:0x7f932585fbc0]   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592ba80 H:[UIView:0x7f932585fbc0]-(0)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592b770 H:|-(0)-[_UIBackdropView:0x7f932585e990]   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b7f0 H:[_UIBackdropView:0x7f932585e990]-(0)-|   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b450 H:|-(0)-[UIView:0x7f932585e830]   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592b4d0 H:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932582a040 H:|-(14)-[AVButton:0x7f93258609b0](LTR)   (Names: '|':UIView:0x7f932585fbc0 )>",
    "<NSLayoutConstraint:0x7f9325829f90 H:[AVButton:0x7f93258609b0]-(15)-[UILabel:0x7f932347dc20'--:--'](LTR)>",
    "<NSLayoutConstraint:0x7f9325839550 H:[UILabel:0x7f932347dc20'--:--']-(12)-[AVScrubber:0x7f93234a4350](LTR)>",
    "<NSLayoutConstraint:0x7f932585a2f0 AVScrubber:0x7f93234a4350.right == UILabel:0x7f932583a470'--:--'.left - 12>",
    "<NSLayoutConstraint:0x7f932580b390 UILabel:0x7f932583a470'--:--'.right == AVButton:0x7f932585e480.left - 15>",
    "<NSLayoutConstraint:0x7f932586f490 AVButton:0x7f932585e480.right == AVButton:0x7f93234d1790.left - 10>",
    "<NSLayoutConstraint:0x7f932580b340 AVButton:0x7f93234d1790.right == AVButton:0x7f93234d6540.left - 10>",
    "<NSLayoutConstraint:0x7f932584c870 AVButton:0x7f93234d6540.right == UIView:0x7f932585fbc0.right - 14>",
    "<NSLayoutConstraint:0x7f932594aa10 'UIView-Encapsulated-Layout-Width' H:[AVAlphaUpdatingView:0x7f932585e310(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7f9325829f90 H:[AVButton:0x7f93258609b0]-(15)-[UILabel:0x7f932347dc20'--:--'](LTR)>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-09-30 12:58:35.909 AVPlayerTest[9352:446772] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7f93259513b0 h=-&- v=-&- _UIBackdropContentView:0x7f9325860000.width == _UIBackdropView:0x7f932585e990.width>",
    "<NSLayoutConstraint:0x7f932592ba00 H:|-(0)-[UIView:0x7f932585fbc0]   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592ba80 H:[UIView:0x7f932585fbc0]-(0)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592b770 H:|-(0)-[_UIBackdropView:0x7f932585e990]   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b7f0 H:[_UIBackdropView:0x7f932585e990]-(0)-|   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b450 H:|-(0)-[UIView:0x7f932585e830]   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592b4d0 H:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932582a040 H:|-(14)-[AVButton:0x7f93258609b0](LTR)   (Names: '|':UIView:0x7f932585fbc0 )>",
    "<NSLayoutConstraint:0x7f932586f490 AVButton:0x7f932585e480.right == AVButton:0x7f93234d1790.left - 10>",
    "<NSLayoutConstraint:0x7f932580b340 AVButton:0x7f93234d1790.right == AVButton:0x7f93234d6540.left - 10>",
    "<NSLayoutConstraint:0x7f932584c870 AVButton:0x7f93234d6540.right == UIView:0x7f932585fbc0.right - 14>",
    "<NSLayoutConstraint:0x7f9325859740 H:[AVButton:0x7f93258609b0]-(>=15)-[UILabel:0x7f93234e53f0'Live Broadcast'](LTR)>",
    "<NSLayoutConstraint:0x7f932583bea0 UILabel:0x7f93234e53f0'Live Broadcast'.right <= AVButton:0x7f932585e480.left - 15>",
    "<NSLayoutConstraint:0x7f932594aa10 'UIView-Encapsulated-Layout-Width' H:[AVAlphaUpdatingView:0x7f932585e310(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7f9325859740 H:[AVButton:0x7f93258609b0]-(>=15)-[UILabel:0x7f93234e53f0'Live Broadcast'](LTR)>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-09-30 12:58:35.910 AVPlayerTest[9352:446772] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7f93259513b0 h=-&- v=-&- _UIBackdropContentView:0x7f9325860000.width == _UIBackdropView:0x7f932585e990.width>",
    "<NSLayoutConstraint:0x7f9323520650 H:|-(0)-[UIActivityIndicatorView:0x7f93234e6ee0]   (Names: '|':UIView:0x7f93234e6120 )>",
    "<NSLayoutConstraint:0x7f93235206a0 H:[UIActivityIndicatorView:0x7f93234e6ee0]-(10)-[UILabel:0x7f93235203b0'Loading\U2026']>",
    "<NSLayoutConstraint:0x7f9323520740 H:[UILabel:0x7f93235203b0'Loading\U2026']-(0)-|   (Names: '|':UIView:0x7f93234e6120 )>",
    "<NSLayoutConstraint:0x7f9323521f90 H:|-(>=0)-[UIView:0x7f93234e6120]   (Names: '|':AVLoadingIndicatorView:0x7f93234e5fb0 )>",
    "<NSLayoutConstraint:0x7f9323510da0 UIView:0x7f93234e6120.centerX == AVLoadingIndicatorView:0x7f93234e5fb0.centerX>",
    "<NSLayoutConstraint:0x7f932592ba00 H:|-(0)-[UIView:0x7f932585fbc0]   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592ba80 H:[UIView:0x7f932585fbc0]-(0)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592b770 H:|-(0)-[_UIBackdropView:0x7f932585e990]   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b7f0 H:[_UIBackdropView:0x7f932585e990]-(0)-|   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b450 H:|-(0)-[UIView:0x7f932585e830]   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592b4d0 H:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932582a040 H:|-(14)-[AVButton:0x7f93258609b0](LTR)   (Names: '|':UIView:0x7f932585fbc0 )>",
    "<NSLayoutConstraint:0x7f932586f490 AVButton:0x7f932585e480.right == AVButton:0x7f93234d1790.left - 10>",
    "<NSLayoutConstraint:0x7f932580b340 AVButton:0x7f93234d1790.right == AVButton:0x7f93234d6540.left - 10>",
    "<NSLayoutConstraint:0x7f932584c870 AVButton:0x7f93234d6540.right == UIView:0x7f932585fbc0.right - 14>",
    "<NSLayoutConstraint:0x7f932583bbc0 H:[AVButton:0x7f93258609b0]-(>=15)-[AVLoadingIndicatorView:0x7f93234e5fb0](LTR)>",
    "<NSLayoutConstraint:0x7f932583bc10 AVLoadingIndicatorView:0x7f93234e5fb0.right <= AVButton:0x7f932585e480.left - 15>",
    "<NSLayoutConstraint:0x7f932594aa10 'UIView-Encapsulated-Layout-Width' H:[AVAlphaUpdatingView:0x7f932585e310(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7f93235206a0 H:[UIActivityIndicatorView:0x7f93234e6ee0]-(10)-[UILabel:0x7f93235203b0'Loading…']>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-09-30 12:58:35.912 AVPlayerTest[9352:446772] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7f93259513b0 h=-&- v=-&- _UIBackdropContentView:0x7f9325860000.width == _UIBackdropView:0x7f932585e990.width>",
    "<NSLayoutConstraint:0x7f9323521f90 H:|-(>=0)-[UIView:0x7f93234e6120]   (Names: '|':AVLoadingIndicatorView:0x7f93234e5fb0 )>",
    "<NSLayoutConstraint:0x7f9323510da0 UIView:0x7f93234e6120.centerX == AVLoadingIndicatorView:0x7f93234e5fb0.centerX>",
    "<NSLayoutConstraint:0x7f932592ba00 H:|-(0)-[UIView:0x7f932585fbc0]   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592ba80 H:[UIView:0x7f932585fbc0]-(0)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592b770 H:|-(0)-[_UIBackdropView:0x7f932585e990]   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b7f0 H:[_UIBackdropView:0x7f932585e990]-(0)-|   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b450 H:|-(0)-[UIView:0x7f932585e830]   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592b4d0 H:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932582a040 H:|-(14)-[AVButton:0x7f93258609b0](LTR)   (Names: '|':UIView:0x7f932585fbc0 )>",
    "<NSLayoutConstraint:0x7f932586f490 AVButton:0x7f932585e480.right == AVButton:0x7f93234d1790.left - 10>",
    "<NSLayoutConstraint:0x7f932580b340 AVButton:0x7f93234d1790.right == AVButton:0x7f93234d6540.left - 10>",
    "<NSLayoutConstraint:0x7f932584c870 AVButton:0x7f93234d6540.right == UIView:0x7f932585fbc0.right - 14>",
    "<NSLayoutConstraint:0x7f932583bbc0 H:[AVButton:0x7f93258609b0]-(>=15)-[AVLoadingIndicatorView:0x7f93234e5fb0](LTR)>",
    "<NSLayoutConstraint:0x7f932583bc10 AVLoadingIndicatorView:0x7f93234e5fb0.right <= AVButton:0x7f932585e480.left - 15>",
    "<NSLayoutConstraint:0x7f932594aa10 'UIView-Encapsulated-Layout-Width' H:[AVAlphaUpdatingView:0x7f932585e310(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7f9323510da0 UIView:0x7f93234e6120.centerX == AVLoadingIndicatorView:0x7f93234e5fb0.centerX>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-09-30 12:58:35.912 AVPlayerTest[9352:446772] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7f93259513b0 h=-&- v=-&- _UIBackdropContentView:0x7f9325860000.width == _UIBackdropView:0x7f932585e990.width>",
    "<NSLayoutConstraint:0x7f9323521f90 H:|-(>=0)-[UIView:0x7f93234e6120]   (Names: '|':AVLoadingIndicatorView:0x7f93234e5fb0 )>",
    "<NSLayoutConstraint:0x7f9323510d10 H:[UIView:0x7f93234e6120]-(>=0)-|   (Names: '|':AVLoadingIndicatorView:0x7f93234e5fb0 )>",
    "<NSLayoutConstraint:0x7f932592ba00 H:|-(0)-[UIView:0x7f932585fbc0]   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592ba80 H:[UIView:0x7f932585fbc0]-(0)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592b770 H:|-(0)-[_UIBackdropView:0x7f932585e990]   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b7f0 H:[_UIBackdropView:0x7f932585e990]-(0)-|   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b450 H:|-(0)-[UIView:0x7f932585e830]   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592b4d0 H:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932582a040 H:|-(14)-[AVButton:0x7f93258609b0](LTR)   (Names: '|':UIView:0x7f932585fbc0 )>",
    "<NSLayoutConstraint:0x7f932586f490 AVButton:0x7f932585e480.right == AVButton:0x7f93234d1790.left - 10>",
    "<NSLayoutConstraint:0x7f932580b340 AVButton:0x7f93234d1790.right == AVButton:0x7f93234d6540.left - 10>",
    "<NSLayoutConstraint:0x7f932584c870 AVButton:0x7f93234d6540.right == UIView:0x7f932585fbc0.right - 14>",
    "<NSLayoutConstraint:0x7f932583bbc0 H:[AVButton:0x7f93258609b0]-(>=15)-[AVLoadingIndicatorView:0x7f93234e5fb0](LTR)>",
    "<NSLayoutConstraint:0x7f932583bc10 AVLoadingIndicatorView:0x7f93234e5fb0.right <= AVButton:0x7f932585e480.left - 15>",
    "<NSLayoutConstraint:0x7f932594aa10 'UIView-Encapsulated-Layout-Width' H:[AVAlphaUpdatingView:0x7f932585e310(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7f9323510d10 H:[UIView:0x7f93234e6120]-(>=0)-|   (Names: '|':AVLoadingIndicatorView:0x7f93234e5fb0 )>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.
2015-09-30 12:58:35.913 AVPlayerTest[9352:446772] Unable to simultaneously satisfy constraints.
    Probably at least one of the constraints in the following list is one you don't want. Try this: (1) look at each constraint and try to figure out which you don't expect; (2) find the code that added the unwanted constraint or constraints and fix it. (Note: If you're seeing NSAutoresizingMaskLayoutConstraints that you don't understand, refer to the documentation for the UIView property translatesAutoresizingMaskIntoConstraints) 
(
    "<NSAutoresizingMaskLayoutConstraint:0x7f93259513b0 h=-&- v=-&- _UIBackdropContentView:0x7f9325860000.width == _UIBackdropView:0x7f932585e990.width>",
    "<NSLayoutConstraint:0x7f932592ba00 H:|-(0)-[UIView:0x7f932585fbc0]   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592ba80 H:[UIView:0x7f932585fbc0]-(0)-|   (Names: '|':_UIBackdropContentView:0x7f9325860000 )>",
    "<NSLayoutConstraint:0x7f932592b770 H:|-(0)-[_UIBackdropView:0x7f932585e990]   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b7f0 H:[_UIBackdropView:0x7f932585e990]-(0)-|   (Names: '|':UIView:0x7f932585e830 )>",
    "<NSLayoutConstraint:0x7f932592b450 H:|-(0)-[UIView:0x7f932585e830]   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932592b4d0 H:[UIView:0x7f932585e830]-(0)-|   (Names: '|':AVAlphaUpdatingView:0x7f932585e310 )>",
    "<NSLayoutConstraint:0x7f932582a040 H:|-(14)-[AVButton:0x7f93258609b0](LTR)   (Names: '|':UIView:0x7f932585fbc0 )>",
    "<NSLayoutConstraint:0x7f932586f490 AVButton:0x7f932585e480.right == AVButton:0x7f93234d1790.left - 10>",
    "<NSLayoutConstraint:0x7f932580b340 AVButton:0x7f93234d1790.right == AVButton:0x7f93234d6540.left - 10>",
    "<NSLayoutConstraint:0x7f932584c870 AVButton:0x7f93234d6540.right == UIView:0x7f932585fbc0.right - 14>",
    "<NSLayoutConstraint:0x7f932583bbc0 H:[AVButton:0x7f93258609b0]-(>=15)-[AVLoadingIndicatorView:0x7f93234e5fb0](LTR)>",
    "<NSLayoutConstraint:0x7f932583bc10 AVLoadingIndicatorView:0x7f93234e5fb0.right <= AVButton:0x7f932585e480.left - 15>",
    "<NSLayoutConstraint:0x7f932594aa10 'UIView-Encapsulated-Layout-Width' H:[AVAlphaUpdatingView:0x7f932585e310(0)]>"
)

Will attempt to recover by breaking constraint 
<NSLayoutConstraint:0x7f932583bbc0 H:[AVButton:0x7f93258609b0]-(>=15)-[AVLoadingIndicatorView:0x7f93234e5fb0](LTR)>

Make a symbolic breakpoint at UIViewAlertForUnsatisfiableConstraints to catch this in the debugger.
The methods in the UIConstraintBasedLayoutDebugging category on UIView listed in <UIKit/UIView.h> may also be helpful.

很抱歉的长期记录，但所有的这一次来了所以包括它。
我在想什么？自动布局是伟大的工作。即使在转动。为什么我看到这些警告？

Sorry for the long Log, but all of it comes up at once so including it. What am I missing? Auto layout is working great. Even on rotation. Why am I seeing these warnings?

项目

P.S ：使用X code版本7.0

P.S.: Using Xcode Version 7.0

更新

取消勾选​​显示播放控制在 AVPlayerViewController 在属性检查器修复它不知何故，我看不出有任何警告。但我需要的控件。似乎越来越像一个bug。

Unchecking Shows Playback Controls on the AVPlayerViewController in the Attributes Inspector fixes it somehow and I see no warnings. But I need the controls. Seems more and more like a bug.

推荐答案

在事实上，我认为这是对苹果方面的bug。

In fact, I think it's bug on Apple side.

我发现了一个解决方法：设置showsPlaybackControls为YES AVPlayerViewController.player已设置后，

I found a workaround : set showsPlaybackControls to YES after the AVPlayerViewController.player have been set.

我修改您的样品与以下行，似乎没有更多的约束错误：

I modify your sample with the following lines and no more Constraint error appears :

@interface ViewController ()

@property(weak, nonatomic) AVPlayerViewController * playerViewController;


@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    NSString *path = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"mp4"];
    NSURL *url = [[NSURL alloc] initFileURLWithPath: path];
    AVPlayer * player = [AVPlayer playerWithURL:url];

    self.playerViewController.player = player;
    self.playerViewController.showsPlaybackControls = YES;
}


- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if ([segue.identifier isEqualToString:@"AVPlayerSegue"]) {
        self.playerViewController = segue.destinationViewController;
    }
}


@end

请注意，文件 test.mp4 已添加到项目中。

Please note that the file test.mp4 have been added to the project.

这篇关于无法同时满足与AVPlayerViewController约束警告镶嵌在故事板的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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