我正在将应用程序移植到iOS 8.我有一些代码可以播放之前正在运行的视频,但现在却没有.
当我运行它时,我收到以下错误：
( "<NSLayoutConstraint:0x7faba2df5940 H:|-(34)-[MPKnockoutButton:0x7faba2e6d750](LTR) (Names: '|':_UIBackdropContentView:0x7faba2dc38c0 )>","<NSLayoutConstraint:0x7faba2d51780 H:[MPKnockoutButton:0x7faba2e6d750]-(34)-[MPDetailSlider:0x7faba2dc6440](LTR)>","<NSLayoutConstraint:0x7faba2d5b7f0 H:[MPDetailSlider:0x7faba2dc6440]-(34)-[UIView:0x7faba2dc4060](LTR)>","<NSLayoutConstraint:0x7faba2dc5da0 UIView:0x7faba2dc4060.right == _UIBackdropView:0x7faba2dbfdc0.right>","<NSLayoutConstraint:0x7faba2dc58d0 H:|-(0)-[_UIBackdropView:0x7faba2dbfdc0] (Names: '|':MPVideoPlaybackOverlayView:0x7faba2dbf6a0 )>","<NSLayoutConstraint:0x7faba2dc5950 H:[_UIBackdropView:0x7faba2dbfdc0]-(0)-| (Names: '|':MPVideoPlaybackOverlayView:0x7faba2dbf6a0 )>","<NSLayoutConstraint:0x7faba2df9b10 H:[MPVideoPlaybackOverlayView:0x7faba2dbf6a0(0)]>","<NSAutoresizingMaskLayoutConstraint:0x7faba2dfbfa0 h=-&- v=-&- _UIBackdropContentView:0x7faba2dc38c0.midX == _UIBackdropView:0x7faba2dbfdc0.midX>","<NSAutoresizingMaskLayoutConstraint:0x7faba2dfbff0 h=-&- v=-&- _UIBackdropContentView:0x7faba2dc38c0.width == _UIBackdropView:0x7faba2dbfdc0.width>" )
这是代码：
movieController = [[MPMoviePlayerController alloc]
initWithContentURL:[NSURL URLWithString:playlistUrl]];
movieController.movieSourceType = MPMovieSourceTypeStreaming;
[movieController.view setFrame:[self.playerView bounds]];
[self.playerView addSubview:movieController.view];
[movieController play];
有什么想法吗？
解决方法
这似乎在iOS 8.1中得到修复.升级后错误消失了.
movieController = [[MPMoviePlayerController alloc]
initWithContentURL:[NSURL URLWithString:playlistUrl]];
movieController.movieSourceType = MPMovieSourceTypeStreaming;
[movieController.view setTranslatesAutoresizingMaskIntoConstraints:NO];
[playerView addSubview:movieController.view];
id views = @{ @"player": movieController.view };
[playerView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"H:|[player]|"
options:0
metrics:nil
views:views]];
[playerView addConstraints:[NSLayoutConstraint constraintsWithVisualFormat:@"V:|[player]|"
options:0
metrics:nil
views:views]];
[movieController play];
