AVCaptureVideoPreviewLayer 没有填满整个 iPhone 4S 屏幕 [英] AVCaptureVideoPreviewLayer doesn't fill up whole iPhone 4S Screen

问题描述

AVCaptureVideoPreviewLayer *avLayer = 
                [AVCaptureVideoPreviewLayer layerWithSession:session];
avLayer.frame = self.view.frame;
[self.view.layer addSublayer:avLayer];

我使用 AVCaptureVideoPreviewLayer 在视图上显示视频.但是视频的视图并没有填满整个 iPhone4 的屏幕.(左右两侧的灰色条)

I use AVCaptureVideoPreviewLayer to display video on the view. But the video's view didn't fill up the full iPhone4's screen.(two grey bar at the right&left side)

我希望视频充满全屏.我该如何处理?非常感谢！

I want the video fills up full screen. How can I deal with it? Thank you very much!

推荐答案

这样可以解决吗?

CGRect bounds=view.layer.bounds;
avLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
avLayer.bounds=bounds;
avLayer.position=CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));

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