当子视图重叠字幕时，移动AVPlayer字幕 [英] Shift AVPlayer captions when subview overlaps them

问题描述

如果子视图(非本机，自定义播放器控件)出现在视频上，是否可以转换显示的系统字幕?显示的标题是文本WebVTT标题.

Is it possible to shift the system captions that display for a video should a subview (non-native, custom player controls) appear over them? The captions displayed are text WebVTT captions.

在某些屏幕尺寸上，当我切换到横向时，我们的自定义搜索栏控件会重叠显示在播放器底部的字幕.

On certain screen sizes, when I shift to landscape, our custom seek bar controls overlap captions that appear at the bottom of the player.

推荐答案

对于它的价值，这是可能的.您需要访问AVPlayer的当前项目并为其设置一个AVTextStyleRule.

For what it's worth, this is possible. You need to access the AVPlayer's current item and set an AVTextStyleRule for it.

// currentPlayer is our instance of the AVPlayer
if let currItem = currentPlayer?.currentItem, 
  let rule = AVTextStyleRule(textMarkupAttributes: [kCMTextMarkupAttribute_OrthogonalLinePositionPercentageRelativeToWritingDirection as String: 93]) {
  // 93% from the top of the video
  currItem.textStyleRules = [rule]
}

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