如何根据框架在视频中设置CATextLayer？ [英] How to set CATextLayer in video according to frame?

问题描述

我已经尝试了很多想法，但还没有成功，我的问题是我有一个视频，我提供了一个功能，在视频上写文字，然后将视频拖放到视频上，我想用它来设置CATextlayer带有用户设置的道具位置的视频，但它没有显示在正确的位置，所以请帮助我。

I have try many think but no success yet, My question is that I Have one video on that I was provide a functionality to write text over the video and drag/drop that text over the video now I wand to set CATextlayer on video with propper position which was set by user but its not display on proper position so please help me.

这是我用于此的代码。

CATextLayer *titleLayer = [CATextLayer layer];//<========code to set the text
titleLayer.string = self.strText;
titleLayer.font = (__bridge CFTypeRef)(self.fonts);;
titleLayer.fontSize = titleLayer.fontSize;
titleLayer.position = CGPointMake (titleLayer.fontSize,titleLayer.fontSize);
//?? titleLayer.shadowOpacity = 0.5;
titleLayer.alignmentMode = kCAAlignmentCenter;
titleLayer.bounds = CGRectMake(self.rectText.origin.x,self.rectText.origin.y-52, 480, 480); //You may need to adjust this for proper display

[titleLayer setBackgroundColor:[UIColor redColor].CGColor];
[parentLayer addSublayer:titleLayer]; //ONLY IF WE ADDED TEXT

推荐答案

解决问题见我的下面的代码。使用视频工作正常。

Solved the issue see my below code. This was working fine with video.

CATextLayer *titleLayer = [CATextLayer layer];
titleLayer.string = self.strText;
titleLayer.font = (__bridge CFTypeRef)(self.fonts);
titleLayer.fontSize = fontsize;
titleLayer.masksToBounds = NO;
titleLayer.foregroundColor = self.textColor.CGColor;
titleLayer.alignmentMode = kCAAlignmentCenter;
//[self.txtVideoText setBackgroundColor:[UIColor colorWithHue:255.0/255.0 saturation:255.0/255.0 brightness:255.0/255.0 alpha:0.4]];
//[self setAnchorPoint:self.txtVideoText.layer.anchorPoint forView:self.txtVideoText layer:titleLayer];
titleLayer.anchorPoint = CGPointMake(0.5, 0.5);
titleLayer.frame = CGRectMake(xx,-(yy-CGRectGetHeight(self.viewHeader.frame)), 480, 480); //You may need to adjust this for proper display
[parentLayer addSublayer:titleLayer]; //ONLY IF WE ADDED TEXT

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