二十七，iOS的截屏代码实现

使用代码截屏实现并放置到一个UIImageView中

代码如下

- (UIImage *)captureImageFromView:(UIView *)view{
    CGRect screenRect = [view bounds];
    UIGraphicsBeginImageContext(screenRect.size);
    
    CGContextRef ctx = UIGraphicsGetCurrentContext();
    [view.layer renderInContext:ctx];
    
    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return image;
}

调用如下；

    _imageView.image = [self captureImageFromView:self.view];

可以精确到某个view；