ios 使 UISlider 高度更大？
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Make UISlider height larger?
提问by Josue Espinosa
I've been searching for a way to make the UISliderprogress bar taller, that is, increase the height. However, I haven't had any success. I don't want to use a custom image or anything, just make it taller, so the UISliderdoesn't look so thin. Am I missing something super obvious?
一直在寻找让UISlider进度条变高的方法，也就是增加高度。但是，我没有取得任何成功。我不想使用自定义图像或任何东西，只是让它更高，所以UISlider看起来不那么薄。我错过了一些非常明显的东西吗？
采纳答案by Josue Espinosa
I found what I was looking for. The following method just needs to be edited in a subclass.
我找到了我要找的东西。下面的方法只需要在子类中编辑即可。
- (CGRect)trackRectForBounds:(CGRect)bounds{
CGRect customBounds = ...
return customBounds;
}
回答by kwahn
The accepted answer will undesirably change the slider's width in some cases, like if you're using a minimumValueImageand maximumValueImage. If you only want to change the height and leave everything else alone, then use this code:
在某些情况下，接受的答案会不希望地改变滑块的宽度，例如如果您使用 aminimumValueImage和maximumValueImage。如果您只想更改高度并保留其他所有内容，请使用以下代码：
override func trackRect(forBounds bounds: CGRect) -> CGRect {
var newBounds = super.trackRect(forBounds: bounds)
newBounds.size.height = 12
return newBounds
}
回答by wils
Here's my recent swifty implementation, building on CularBytes's ...
这是我最近的 swifty 实现，建立在 CularBytes 的......
open class CustomSlider : UISlider {
@IBInspectable open var trackWidth:CGFloat = 2 {
didSet {setNeedsDisplay()}
}
override open func trackRect(forBounds bounds: CGRect) -> CGRect {
let defaultBounds = super.trackRect(forBounds: bounds)
return CGRect(
x: defaultBounds.origin.x,
y: defaultBounds.origin.y + defaultBounds.size.height/2 - trackWidth/2,
width: defaultBounds.size.width,
height: trackWidth
)
}
}
Use this on a UISlider in a storyboard by setting its custom class
通过设置其自定义类在故事板中的 UISlider 上使用它
The IBInspectable allows you to set the height from the storyboard
IBInspectable 允许您设置故事板的高度
回答by CularBytes
For those that would like to see some working code for changing the track size.
对于那些希望看到一些用于更改轨道大小的工作代码的人。
class CustomUISlider : UISlider {
override func trackRect(forBounds bounds: CGRect) -> CGRect {
//keeps original origin and width, changes height, you get the idea
let customBounds = CGRect(origin: bounds.origin, size: CGSize(width: bounds.size.width, height: 5.0))
super.trackRect(forBounds: customBounds)
return customBounds
}
//while we are here, why not change the image here as well? (bonus material)
override func awakeFromNib() {
self.setThumbImage(UIImage(named: "customThumb"), for: .normal)
super.awakeFromNib()
}
}
Only thing left is changing the class inside the storyboard:
唯一剩下的就是改变故事板内的类：
You can keep using your seekbar action and outlet to the object type UISlider, unless you want to add some more custom stuff to your slider.
您可以继续使用您的搜索栏操作和对象类型 UISlider 的出口，除非您想向您的滑块添加更多自定义内容。
回答by Jelle
You could play with this, see what happens:
你可以玩这个，看看会发生什么：
slider.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1.0, 2.0);
