苹果手机==> UIAlertView改变背景？

发布于 2024-09-13 14:45:04 字数 992 浏览 3 评论 0原文

我正在尝试更改 uialertview 的背景。一切工作正常，除了我添加到 uialert 视图的背景图像不会在警报视图内缩放。所以基本上你只能看到基于当前大小的背景图像的一部分。有什么方法可以使图像在警报视图内缩放直到适合吗？

UIAlertView *theAlert = [[UIAlertView alloc] initWithTitle:title 
                                                    message:msg
                                                   delegate:nil 
                                          cancelButtonTitle:@"OK" 
                                          otherButtonTitles: nil];
    [theAlert show];

    UIImage *theImage = [UIImage imageNamed:@"bg.jpg"];
    theImage = [theImage stretchableImageWithLeftCapWidth:16 topCapHeight:16];
    CGSize theSize = [theAlert frame].size;

    UIGraphicsBeginImageContext(theSize);
    [theImage drawInRect:CGRectMake(0, 0, theAlert.frame.size.width, theAlert.frame.size.height)];
    theImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    theAlert.layer.contents = (id)[theImage CGImage];
    [theAlert release];

原文

I am trying to change the background of the uialertview.
Everything works fine except the background image i am adding to the uialert view won't scale inside the alertview. So basically you see only part of my background image based on the current size.
Is there any way to make it so that the image scales inside the alerview until it fits?

UIAlertView *theAlert = [[UIAlertView alloc] initWithTitle:title 
                                                    message:msg
                                                   delegate:nil 
                                          cancelButtonTitle:@"OK" 
                                          otherButtonTitles: nil];
    [theAlert show];

    UIImage *theImage = [UIImage imageNamed:@"bg.jpg"];
    theImage = [theImage stretchableImageWithLeftCapWidth:16 topCapHeight:16];
    CGSize theSize = [theAlert frame].size;

    UIGraphicsBeginImageContext(theSize);
    [theImage drawInRect:CGRectMake(0, 0, theAlert.frame.size.width, theAlert.frame.size.height)];
    theImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    theAlert.layer.contents = (id)[theImage CGImage];
    [theAlert release];

分享到QQ

分享到微博