Make an image for UIView

gistfile1.m

///为UIView创建一个截图
static inline UIImage* WKFlip_make_image_for_view(UIView* view){
    double startTime=CFAbsoluteTimeGetCurrent();
    if(UIGraphicsBeginImageContextWithOptions != NULL){
        UIGraphicsBeginImageContextWithOptions(view.frame.size, NO, 0.0);
    } else {
        UIGraphicsBeginImageContext(view.frame.size);
    }
    [view.layer renderInContext:UIGraphicsGetCurrentContext()];
    UIImage* image=UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    NSLog(@"makeImage duration:%f", CFAbsoluteTimeGetCurrent()-startTime);
    return image;
}