Brightcove IOS Sdk播放器没有播放/ fullscren按钮

Question

我在使用xcode的iOS应用程序中使用云动态中的brigthcove视频，当我启动播放器时，这能够正确播放视频，但播放按钮，全屏和其他显示问号。

self.options = [[BCOVPUIPlayerViewOptions alloc] init];
self.options.presentingViewController = self;

self.controlsView= [BCOVPUIBasicControlView basicControlViewWithVODLayout];

self.playerView = [[BCOVPUIPlayerView alloc] initWithPlaybackController:self.playbackController options:self.options controlsView:self.controlsView ];
self.playerView.delegate = self;
self.playerView.frame = _videoContainer.bounds;
self.playerView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
[_videoContainer addSubview:self.playerView];

self.playerView.playbackController = self.playbackController;

我可以更改与按钮关联的图标，但我想使用那些应该直接带来sdk的图标。

BCOVPUIButton *b = self.playerView.controlsView.playbackButton;
[b setImage:[UIImage imageNamed:@"iconoapp-03"] forState:UIControlStateNormal];

任何sugestions？谢谢

编辑1 ：添加了屏幕截图