Question

我想创建一个工具，制作应用程序屏幕的视频，以显示应用程序如何为客户端工作所以我希望每秒30到60次获取窗口截图，并将其保存到文档中。应用关闭后，根据这些文件创建视频，然后您将获得应用的视频。当您将应用程序发送到appstore时，您将删除或取消制作视频和应用程序sreenshots。

//Get list of document directories in sandbox
    NSArray *documentDirectories = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDirectory, YES);
    //Get one and only document directory from that list
    self.documentFolder = [documentDirectories objectAtIndex:0];

    self.images = [[NSMutableArray alloc] init];
    //Append passed in file name to that directory, return it

    _counter = 0;
    self.timerCapture = [NSTimer scheduledTimerWithTimeInterval: 1.0f/30.0f
                                             target: self
                                           selector: @selector(getWindowCapture:)
                                           userInfo: nil
                                            repeats: YES];


- (UIImage *)captureScreen {
    CALayer *layer;
    layer = self.window.layer;
    UIGraphicsBeginImageContextWithOptions(self.window.bounds.size, NO, 1.0f); 
    [layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage *screenImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return screenImage;
}

问题是我在动画期间无法捕获UIWindow？
我怎么能这样做？

Answer 1

使用此
[layer.presentationLayer renderInContext:UIGraphicsGetCurrentContext()];
而不是 [layer renderInContext:UIGraphicsGetCurrentContext()];

Answer 2

它可能对你有帮助。： -

https://github.com/hackiftekhar/IQProjectVideo

它有一个缺点，它不捕获presentViewController动画。我想解决这个问题。

用ui动画捕捉uiwindow截图30 fps

2 个答案: