iphone 截屏

 

+ (UIImage *)takeScreenshot:(UIView *)theView
{
     // Use UIGraphicsBeginImageContext(CGSize size) if targetting < iOS 4.0
     UIGraphicsBeginImageContextWithOptions(theView.bounds.size, NO, 0.0);
     [theView.layer renderInContext:UIGraphicsGetCurrentContext()];
     UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext();
     UIGraphicsEndImageContext();
     return screenshot;
}