take snapshot.

renderview2snapshot

	.	+ (UIImage *)renderView:(UIView *)view {
	.	    UIGraphicsBeginImageContext(view.bounds.size);
	.	    
	.	    CGContextRef ctx = UIGraphicsGetCurrentContext();
	.	    [view.layer renderInContext:ctx];
	.	    
	.	    UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
	.	    
	.	    UIGraphicsEndImageContext();
	.	    
	.	    return newImage;
	.	}