【小笔记】更改AlertView背景

更改AlertView背景

     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:0];
     CGSize theSize = [theAlert frame].size;
     UIGraphicsBeginImageContext(theSize);
     [theImage drawInRect:CGRectMake(5, 5, theSize.width-10, theSize.height-20)];//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];