ios - 如何在 Swift 中更改 UIPickerView 组件的字体大小？
<p><p>当我在 <code>attributedTitleForRow</code> 中更改字体颜色和大小时，字体大小不会改变，但选定的行颜色会改变:</p>
<pre><code>func pickerView(_ pickerView: UIPickerView, attributedTitleForRow row: Int, forComponent component: Int) -> NSAttributedString? {
var color: UIColor!
var size: UIFont!
switch component {
case 0:
if pickerView.selectedRow(inComponent: 0) == row {
color = UIColor.init(red: 186/255, green: 61/255, blue: 62/255, alpha: 1.0)
size = UIFont(name:"Raleway", size:14)
} else {
color = UIColor.black
}
let attributes: = [
NSForegroundColorAttributeName: color, NSFontAttributeName: size]
return NSAttributedString(string: peopleCount, attributes: attributes)
default:
return NSAttributedString()
}
}
</code></pre>
<p>当我在 <code>viewForRow</code> 方法中更改字体颜色和大小时，所有行的颜色和字体大小都会发生变化:</p>
<pre><code>func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
var label = view as! UILabel!
if label == nil {
label = UILabel()
label?.textColor = UIColor.red
}
switch component {
case 0:
label?.text = peopleCount
label?.font = UIFont(name:"Raleway", size:14)
return label!
default:
return label!
}
}
</code></pre>
<p>所以，我的问题是如何更改所有行的字体大小，但只更改选定行的颜色？如:</p>
<p> <a href="/image/w8Ev3.png" rel="noreferrer noopener nofollow"><img src="/image/w8Ev3.png" alt="enter image description here"/></a> </p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><pre><code> func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView {
var label = view as! UILabel!
if label == nil {
label = UILabel()
label?.textAlignment = .center
//label?.textColor = UIColor.red
}
switch component {
case 0:
label?.text = peopleCount
if(pickerView.selectedRow(inComponent: 0)==row){
label?.textColor = UIColor.red
}
return label!
default:
return label!
}
}
</code></pre>
<p>您可以像这样编辑您的代码，要查看标签颜色的变化，您必须在下面添加此代码。这与点击事件有关</p>
<pre><code> func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
pickerView.reloadAllComponents()
}
</code></pre></p>
<p style="font-size: 20px;">关于ios - 如何在 Swift 中更改 UIPickerView 组件的字体大小？，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/44383150/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/44383150/
</a>
</p>
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