设置 Apple TV 视频 JavaScript
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【中文标题】设置 Apple TV 视频 JavaScript【英文标题】：Setting up Apple TV video JavaScript 【发布时间】：2015-09-11 08:12:13 【问题描述】：我有一个简单的函数，它将启动 player 来处理 Apple TV 的视频播放
function launchPlayer()
var player = new Player();
var playlist = new Playlist();
var mediaItem = new MediaItem("video", "http://localhost:9001/videos/nsoperations.mp4");
player.playlist = playlist;
player.playlist.push(mediaItem);
player.present();
根据Player Documentation，播放视频只需要一个播放器、一个播放列表(docs)和一个媒体项(docs)。我已经得到了所有这些，但是在运行我的代码时，我得到了一个错误：
Unable to simultaneously satisfy constraints. 据我了解，我们不处理这些内置播放器的自动布局。我是不是用错播放器了？
错误的完整细节如下：
(
"<NSLayoutConstraint:0x7f8162e8f270 UIView:0x7f8162e964b0.leading == UIView:0x7f8162e9a640.leading>",
"<NSLayoutConstraint:0x7f8162e945b0 H:|-(0)-[UIView:0x7f8162e964b0] (Names: '|':TVRelatedContentView:0x7f8162e990a0 )>",
"<NSLayoutConstraint:0x7f8162e930c0 H:|-(90)-[UIView:0x7f8162e9a640] (Names: '|':TVRelatedContentView:0x7f8162e990a0 )>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162e8f270 UIView:0x7f8162e964b0.leading == UIView:0x7f8162e9a640.leading>
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.
2015-09-11 07:35:59.886 TestingTVML[3354:323153] 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.
(
"<NSLayoutConstraint:0x7f8162e93a20 UIView:0x7f8162e964b0.trailing == UIView:0x7f8162e9a640.trailing>",
"<NSLayoutConstraint:0x7f8162e92de0 UIView:0x7f8162e964b0.trailing == TVRelatedContentView:0x7f8162e990a0.trailing>",
"<NSLayoutConstraint:0x7f8162e930c0 H:|-(90)-[UIView:0x7f8162e9a640] (Names: '|':TVRelatedContentView:0x7f8162e990a0 )>",
"<NSLayoutConstraint:0x7f8162e975e0 UIView:0x7f8162e9a640.width == TVRelatedContentView:0x7f8162e990a0.width>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162e93a20 UIView:0x7f8162e964b0.trailing == UIView:0x7f8162e9a640.trailing>
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.
2015-09-11 07:36:00.024 TestingTVML[3354:323153] 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.
(
"<NSLayoutConstraint:0x7f8162e93a20 UIView:0x7f8162e964b0.trailing == UIView:0x7f8162e9a640.trailing>",
"<NSLayoutConstraint:0x7f8162e92de0 UIView:0x7f8162e964b0.trailing == TVRelatedContentView:0x7f8162e990a0.trailing>",
"<NSLayoutConstraint:0x7f8162e930c0 H:|-(90)-[UIView:0x7f8162e9a640] (Names: '|':TVRelatedContentView:0x7f8162e990a0 )>",
"<NSLayoutConstraint:0x7f8162e975e0 UIView:0x7f8162e9a640.width == TVRelatedContentView:0x7f8162e990a0.width - 2010>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162e93a20 UIView:0x7f8162e964b0.trailing == UIView:0x7f8162e9a640.trailing>
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.
2015-09-11 07:36:00.092 TestingTVML[3354:323153] 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.
(
"<NSLayoutConstraint:0x7f8162e975e0 UIView:0x7f8162e9a640.width == TVRelatedContentView:0x7f8162e990a0.width - 2010>",
"<NSLayoutConstraint:0x7f8162e23cd0 'UIView-Encapsulated-Layout-Width' H:[TVRelatedContentView:0x7f8162e990a0(1920)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162e975e0 UIView:0x7f8162e9a640.width == TVRelatedContentView:0x7f8162e990a0.width - 2010>
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.
2015-09-11 07:36:00.126 TestingTVML[3354:323153] 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.
(
"<NSLayoutConstraint:0x7f8162c8e520 H:|-(>=70)-[UIView:0x7f8162e1dbd0] (Names: '|':_UIAlertControllerActionView:0x7f8162ec3a30 )>",
"<NSLayoutConstraint:0x7f8162c0b2f0 UIView:0x7f8162e1dbd0.trailing <= _UIAlertControllerActionView:0x7f8162ec3a30.trailing - 70>",
"<NSLayoutConstraint:0x7f8164266d40 UIView:0x7f8164226270.width == _UIAlertControllerCollectionViewCell:0x7f8164228e10.width>",
"<NSLayoutConstraint:0x7f816423abd0 _UIAlertControllerActionView:0x7f8162ec3a30.width == UIView:0x7f8164226270.width>",
"<NSLayoutConstraint:0x7f8164224720 'UIView-Encapsulated-Layout-Width' H:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c0b2f0 UIView:0x7f8162e1dbd0.trailing <= _UIAlertControllerActionView:0x7f8162ec3a30.trailing - 70>
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.
2015-09-11 07:36:00.127 TestingTVML[3354:323153] 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.
(
"<NSLayoutConstraint:0x7f8162c87400 V:[_UIAlertControllerActionView:0x7f8162ec3a30(>=80)]>",
"<NSLayoutConstraint:0x7f8164266d90 UIView:0x7f8164226270.height == _UIAlertControllerCollectionViewCell:0x7f8164228e10.height>",
"<NSLayoutConstraint:0x7f816425e320 _UIAlertControllerActionView:0x7f8162ec3a30.height == UIView:0x7f8164226270.height>",
"<NSLayoutConstraint:0x7f816425a130 'UIView-Encapsulated-Layout-Height' V:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c87400 V:[_UIAlertControllerActionView:0x7f8162ec3a30(>=80)]>
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.
2015-09-11 07:36:00.127 TestingTVML[3354:323153] 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.
(
"<NSLayoutConstraint:0x7f8162c88760 UIImageView:0x7f8162e22190.centerY == _UIAlertControllerActionView:0x7f8162ec3a30.centerY>",
"<NSLayoutConstraint:0x7f8162c86800 UIImageView:0x7f8162e22190.bottom <= _UIAlertControllerActionView:0x7f8162ec3a30.bottom - 6>",
"<NSLayoutConstraint:0x7f8164266d90 UIView:0x7f8164226270.height == _UIAlertControllerCollectionViewCell:0x7f8164228e10.height>",
"<NSLayoutConstraint:0x7f816425e320 _UIAlertControllerActionView:0x7f8162ec3a30.height == UIView:0x7f8164226270.height>",
"<NSLayoutConstraint:0x7f816425a130 'UIView-Encapsulated-Layout-Height' V:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c86800 UIImageView:0x7f8162e22190.bottom <= _UIAlertControllerActionView:0x7f8162ec3a30.bottom - 6>
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.
2015-09-11 07:36:00.128 TestingTVML[3354:323153] 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.
(
"<NSLayoutConstraint:0x7f8162c88760 UIImageView:0x7f8162e22190.centerY == _UIAlertControllerActionView:0x7f8162ec3a30.centerY>",
"<NSLayoutConstraint:0x7f8162c867b0 V:|-(>=6)-[UIImageView:0x7f8162e22190] (Names: '|':_UIAlertControllerActionView:0x7f8162ec3a30 )>",
"<NSLayoutConstraint:0x7f8164266d90 UIView:0x7f8164226270.height == _UIAlertControllerCollectionViewCell:0x7f8164228e10.height>",
"<NSLayoutConstraint:0x7f816425e320 _UIAlertControllerActionView:0x7f8162ec3a30.height == UIView:0x7f8164226270.height>",
"<NSLayoutConstraint:0x7f816425a130 'UIView-Encapsulated-Layout-Height' V:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c88760 UIImageView:0x7f8162e22190.centerY == _UIAlertControllerActionView:0x7f8162ec3a30.centerY>
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.
2015-09-11 07:36:00.138 TestingTVML[3354:323153] 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:0x7f8162f51c30 h=--& v=--& H:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>",
"<NSLayoutConstraint:0x7f8162c8e520 H:|-(>=70)-[UIView:0x7f8162e1dbd0] (Names: '|':_UIAlertControllerActionView:0x7f8162ec3a30 )>",
"<NSLayoutConstraint:0x7f8162c0b2f0 UIView:0x7f8162e1dbd0.trailing <= _UIAlertControllerActionView:0x7f8162ec3a30.trailing - 70>",
"<NSLayoutConstraint:0x7f8164266d40 UIView:0x7f8164226270.width == _UIAlertControllerCollectionViewCell:0x7f8164228e10.width>",
"<NSLayoutConstraint:0x7f816423abd0 _UIAlertControllerActionView:0x7f8162ec3a30.width == UIView:0x7f8164226270.width>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c0b2f0 UIView:0x7f8162e1dbd0.trailing <= _UIAlertControllerActionView:0x7f8162ec3a30.trailing - 70>
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.
2015-09-11 07:36:00.138 TestingTVML[3354:323153] 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:0x7f8162f51cd0 h=--& v=--& V:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>",
"<NSLayoutConstraint:0x7f8162c87400 V:[_UIAlertControllerActionView:0x7f8162ec3a30(>=80)]>",
"<NSLayoutConstraint:0x7f8164266d90 UIView:0x7f8164226270.height == _UIAlertControllerCollectionViewCell:0x7f8164228e10.height>",
"<NSLayoutConstraint:0x7f816425e320 _UIAlertControllerActionView:0x7f8162ec3a30.height == UIView:0x7f8164226270.height>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c87400 V:[_UIAlertControllerActionView:0x7f8162ec3a30(>=80)]>
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.
2015-09-11 07:36:00.139 TestingTVML[3354:323153] 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:0x7f8162f51cd0 h=--& v=--& V:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>",
"<NSLayoutConstraint:0x7f8162c88760 UIImageView:0x7f8162e22190.centerY == _UIAlertControllerActionView:0x7f8162ec3a30.centerY>",
"<NSLayoutConstraint:0x7f8162c867b0 V:|-(>=6)-[UIImageView:0x7f8162e22190] (Names: '|':_UIAlertControllerActionView:0x7f8162ec3a30 )>",
"<NSLayoutConstraint:0x7f8164266d90 UIView:0x7f8164226270.height == _UIAlertControllerCollectionViewCell:0x7f8164228e10.height>",
"<NSLayoutConstraint:0x7f816425e320 _UIAlertControllerActionView:0x7f8162ec3a30.height == UIView:0x7f8164226270.height>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c88760 UIImageView:0x7f8162e22190.centerY == _UIAlertControllerActionView:0x7f8162ec3a30.centerY>
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.
2015-09-11 07:36:00.139 TestingTVML[3354:323153] 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:0x7f8162f51cd0 h=--& v=--& V:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>",
"<NSLayoutConstraint:0x7f8162c867b0 V:|-(>=6)-[UIImageView:0x7f8162e22190] (Names: '|':_UIAlertControllerActionView:0x7f8162ec3a30 )>",
"<NSLayoutConstraint:0x7f8162c86800 UIImageView:0x7f8162e22190.bottom <= _UIAlertControllerActionView:0x7f8162ec3a30.bottom - 6>",
"<NSLayoutConstraint:0x7f8164266d90 UIView:0x7f8164226270.height == _UIAlertControllerCollectionViewCell:0x7f8164228e10.height>",
"<NSLayoutConstraint:0x7f816425e320 _UIAlertControllerActionView:0x7f8162ec3a30.height == UIView:0x7f8164226270.height>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c86800 UIImageView:0x7f8162e22190.bottom <= _UIAlertControllerActionView:0x7f8162ec3a30.bottom - 6>
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.
2015-09-11 07:36:00.144 TestingTVML[3354:323153] 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:0x7f8162f51c30 h=--& v=--& H:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>",
"<NSLayoutConstraint:0x7f8162c8e520 H:|-(>=70)-[UIView:0x7f8162e1dbd0] (Names: '|':_UIAlertControllerActionView:0x7f8162ec3a30 )>",
"<NSLayoutConstraint:0x7f8162c0b2f0 UIView:0x7f8162e1dbd0.trailing <= _UIAlertControllerActionView:0x7f8162ec3a30.trailing - 70>",
"<NSLayoutConstraint:0x7f8164266d40 UIView:0x7f8164226270.width == _UIAlertControllerCollectionViewCell:0x7f8164228e10.width>",
"<NSLayoutConstraint:0x7f816423abd0 _UIAlertControllerActionView:0x7f8162ec3a30.width == UIView:0x7f8164226270.width>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c0b2f0 UIView:0x7f8162e1dbd0.trailing <= _UIAlertControllerActionView:0x7f8162ec3a30.trailing - 70>
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.
2015-09-11 07:36:00.145 TestingTVML[3354:323153] 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:0x7f8162f51cd0 h=--& v=--& V:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>",
"<NSLayoutConstraint:0x7f8162c87400 V:[_UIAlertControllerActionView:0x7f8162ec3a30(>=80)]>",
"<NSLayoutConstraint:0x7f8164266d90 UIView:0x7f8164226270.height == _UIAlertControllerCollectionViewCell:0x7f8164228e10.height>",
"<NSLayoutConstraint:0x7f816425e320 _UIAlertControllerActionView:0x7f8162ec3a30.height == UIView:0x7f8164226270.height>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c87400 V:[_UIAlertControllerActionView:0x7f8162ec3a30(>=80)]>
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.
2015-09-11 07:36:00.145 TestingTVML[3354:323153] 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:0x7f8162f51cd0 h=--& v=--& V:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>",
"<NSLayoutConstraint:0x7f8162c88760 UIImageView:0x7f8162e22190.centerY == _UIAlertControllerActionView:0x7f8162ec3a30.centerY>",
"<NSLayoutConstraint:0x7f8162c867b0 V:|-(>=6)-[UIImageView:0x7f8162e22190] (Names: '|':_UIAlertControllerActionView:0x7f8162ec3a30 )>",
"<NSLayoutConstraint:0x7f8164266d90 UIView:0x7f8164226270.height == _UIAlertControllerCollectionViewCell:0x7f8164228e10.height>",
"<NSLayoutConstraint:0x7f816425e320 _UIAlertControllerActionView:0x7f8162ec3a30.height == UIView:0x7f8164226270.height>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c88760 UIImageView:0x7f8162e22190.centerY == _UIAlertControllerActionView:0x7f8162ec3a30.centerY>
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.
2015-09-11 07:36:00.146 TestingTVML[3354:323153] 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:0x7f8162f51cd0 h=--& v=--& V:[_UIAlertControllerCollectionViewCell:0x7f8164228e10(0)]>",
"<NSLayoutConstraint:0x7f8162c867b0 V:|-(>=6)-[UIImageView:0x7f8162e22190] (Names: '|':_UIAlertControllerActionView:0x7f8162ec3a30 )>",
"<NSLayoutConstraint:0x7f8162c86800 UIImageView:0x7f8162e22190.bottom <= _UIAlertControllerActionView:0x7f8162ec3a30.bottom - 6>",
"<NSLayoutConstraint:0x7f8164266d90 UIView:0x7f8164226270.height == _UIAlertControllerCollectionViewCell:0x7f8164228e10.height>",
"<NSLayoutConstraint:0x7f816425e320 _UIAlertControllerActionView:0x7f8162ec3a30.height == UIView:0x7f8164226270.height>"
)
Will attempt to recover by breaking constraint
<NSLayoutConstraint:0x7f8162c86800 UIImageView:0x7f8162e22190.bottom <= _UIAlertControllerActionView:0x7f8162ec3a30.bottom - 6>
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.
[2]: https://developer.apple.com/library/prerelease/tvos/documentation/TVMLJS/Reference/TVJSPlaylist_Ref/index.html#//apple_ref/javascript/cl/Playlist
[3]: https://developer.apple.com/library/prerelease/tvos/documentation/TVMLJS/Reference/TVJSMediaItem_Ref/index.html#//apple_ref/javascript/cl/MediaItem
【问题讨论】：
您在本地环境中运行它，是吗？ localhost:9001/videos/nsoperations.mp4 可以访问吗？ 忘了补充——是的，我正在运行本地环境，我已经能够联系到localhost:9001 来处理其他模板。
我点击了您提供的链接，我收到了视频。谢谢你的好检查！
"audio" 不是视频，我想。您可能想play 视频。
@zeroflagL 已修复！谢谢你的收获。现在遇到约束错误。
【参考方案1】：
您的样品没问题，可以正常工作。即使有约束错误，但玩家也不是很宽容。
我认为您正在使用 Python SimpleHTTPServer 进行测试，它不适用于视频流，但如果您使用 Apache 或例如直接来自苹果“http://trailers.apple.com/movies/focus_features/9/9-clip_480p.mov”的此文件，它将起作用。
【讨论】：
爱你，谢谢指点。这会有很大帮助。 这是正确的。我认为视频播放需要服务器支持字节范围请求等。 是的，视频内容需要字节范围请求，我记得在 Kobo 时在 ePub 渲染中运行嵌入式音频/视频时遇到了同样的问题。【参考方案2】：我遇到了同样的问题。事实证明，Python 的 SimpleHTTPServer 不能流式传输视频，并且是一个糟糕的（极简主义）示例。我改用http-server，它完美无缺。这是我使用的语法（在我的 Mac 上）：
$ npm install http-server -g
$ http-server ./ -p 9001 -a 192.168.16.105
地点：
./ 是 Web 服务器根目录的路径
-p 9001 是您要使用的端口
-a 192.168.16.105 是您要提供服务的 IP 地址
您可以通过打开网络浏览器并执行以下操作来检查它是否正常工作：
http://192.168.16.105:9001/myvideo.mp4
（只需确保您在该文件夹中有视频文件可以播放）
【讨论】：
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