UIView 背景图片调整大小 [英] UIView background image resize

问题描述

我有一个 UIView(这是我的导航抽屉)，我想设置一个背景图像.首先我尝试过这种方法:

I have a UIView (that is my navigation drawer) and I want to set a background image. First I have tried this approach:

menuView.backgroundColor = UIColor(patternImage: UIImage(named: "menu_image.png")!)

但是我只得到了填充 UIView 的图像的一部分.所以接下来我尝试像这样调整图像大小:

But I get only a part of my image that fills my UIView. So next I have tried to resize image like this:

UIGraphicsBeginImageContext(menuView.frame.size);
var image = UIImage(named: "menu_image.png")
image?.drawInRect(menuView.bounds)
UIGraphicsEndImageContext()
menuView.backgroundColor = UIColor(patternImage: image!)

但这并没有帮助，而且奇怪的是，bcs 的人说，它帮助了他们.我不明白我做错了什么.

But it doesn't help and it is strange, bcs people said, that it helped them. I don't understand what I am doing wrong.

更新

我忘记了 1 行:

UIGraphicsBeginImageContext(menuView.frame.size);
var image = UIImage(named: "menu_image.png")
image?.drawInRect(menuView.bounds)
image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext()
menuView.backgroundColor = UIColor(patternImage: image!)

问题已结束，谢谢.

推荐答案

Obj-C ... 将其转换为 Swift 就可以了(你少了一行)

Obj-C ... convert it to Swift and it will work (u're missing one line)

UIGraphicsBeginImageContext(self.view.frame.size);
[[UIImage imageNamed:@"image.png"] drawInRect:self.view.bounds];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

self.view.backgroundColor = [UIColor colorWithPatternImage:image];

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