问题描述
我想设置视图的背景图像。我用三张图片：backgroundimage.png（尺寸为320×480），[email protected]（尺寸640×960）和[email protected]（尺寸640×1136）
这为iPhone 3G大小的作品。但是，当我测试它的视网膜大小的背景图像是原始图像的只是一小部分。我想，我必须以某种方式降尺度图像，或者设置一个框架，但我就是不知道怎么办。
感谢所有帮助;）
多数民众赞成在code：
self.view.backgroundColor = [的UIColor clearColor]
*的UIImage =将backgroundImage [UIImage的ALLOC] INIT]
如果（[UIScreen mainScreen]界限] .size.height == 568）{
将backgroundImage = [UIImage的imageNamed：@背景568h @ 2X];
}
其他{
将backgroundImage = [UIImage的imageNamed：@背景];
}
self.view.backgroundColor = [的UIColor colorWithPatternImage：将backgroundImage];
我的第一个猜测是因为 colorWithPatternImage 的滥用。如果你有，你想有瓷砖图案像这应该只被使用。相反，尝试创建一个UIImageView视图的大小，然后将其添加为self.view的子视图。
的UIImageView * backgroundImageView = [[UIImageView的页头] initWithImage：将backgroundImage];
[backgroundImageView SETFRAME：[自拍]界限]];
[自拍] addSubview：backgroundImageView];
I want to set the background image of a view. I use three images: backgroundimage.png (size 320 x 480), [email protected] (size 640 x 960) and [email protected] (size 640 x 1136)
that works for iphone 3g size. But when I test it for retina size the background image is just a small part of the original image. I think, that I have to downscale the image somehow, or set a frame for it, but I just don't know how.
Thanks for any help ;)
thats the code:
self.view.backgroundColor = [UIColor clearColor];
UIImage *backgroundImage = [[UIImage alloc]init];
if ([[UIScreen mainScreen] bounds].size.height == 568) {
backgroundImage = [UIImage imageNamed:@"background-568h@2x"];
}
else{
backgroundImage = [UIImage imageNamed:@"background"];
}
self.view.backgroundColor = [UIColor colorWithPatternImage:backgroundImage];
My first guess is because of the misuse of colorWithPatternImage. This should only be used if you have a pattern image that you wish to have tiled. Instead try creating a UIImageView the size of the view, and then adding it as a subview of self.view.
UIImageView *backgroundImageView = [[UIImageView alloc] initWithImage:backgroundImage];
[backgroundImageView setFrame:[[self view] bounds]];
[[self view] addSubview:backgroundImageView];
这篇关于设置为iPhone 3G，iPhone 4S和iPhone 5的背景图片的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！