UIAlertView *theAlert = [[[UIAlertViewalloc] initWithTitle:@"Atention"

                                                     message: @"I'm a Chinese!"

                                                    delegate:nil

                                            cancelButtonTitle:@"Cancel"

                                            otherButtonTitles:@"Okay",nil] autorelease];

   [theAlert show];

   UIImage *theImage = [UIImageimageNamed:@"loveChina.png"];

   theImage = [theImage stretchableImageWithLeftCapWidth:0topCapHeight:];

   CGSize theSize = [theAlert frame].size;

    UIGraphicsBeginImageContext(theSize);

   [theImage drawInRect:CGRectMake(, , theSize.width-, theSize.height-)];// 这个地方的大小要自己调整，以适应 alertview 的背景颜色的大小。

   theImage = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

   theAlert.layer.contents = (id)[theImage CGImage];