iOS开发 截屏

+ (UIImage*)screenView:(UIView *)view{

    CGRect rect = view.frame;

    UIGraphicsBeginImageContext(rect.size);

    CGContextRef context =UIGraphicsGetCurrentContext();

    [view.layer renderInContext:context];//截取不包括导航栏

//    [self.navigationController.view.layer renderInContext:context];//截取包括导航栏

    UIImage *img =UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    return img;

}