[英]UISegmentedControl change number of segments programmatically
Is there a way to change the number of segments programmatically?有没有办法以编程方式更改段数?
Yes, you can use是的,你可以使用
removeSegmentAtIndex:(NSUInteger) animated:(BOOL)
And和
insertSegmentWithTitle:(NSString *) atIndex:(NSUInteger) animated:(BOOL)
To replace the segments entirely, you can use the following function:要完全替换段,您可以使用以下函数:
- (void)setSegments:(NSArray *)segments
{
[segmentController removeAllSegments];
for (NSString *segment in segments) {
[segmentController insertSegmentWithTitle:segment atIndex:segmentController.numberOfSegments animated:NO];
}
}
Hope this helps.希望这可以帮助。
And here's a little Swift extension to replace current segmentedControl with array of new values这里有一个小的 Swift 扩展,用新值数组替换当前的 segmentedControl
extension UISegmentedControl {
func replaceSegments(segments: Array<String>) {
self.removeAllSegments()
for segment in segments {
self.insertSegmentWithTitle(segment, atIndex: self.numberOfSegments, animated: false)
}
}
}
extension UISegmentedControl {
func replaceSegments(segments: Array<String>) {
self.removeAllSegments()
for segment in segments {
self.insertSegment(withTitle: segment, at: self.numberOfSegments, animated: false)
}
}
}
Here is a Swift extension for replacing the segments with a sequence of strings.这是一个用字符串序列替换段的 Swift 扩展。 It's similar to another answer given here except it can be used with any sequence, meaning you can also pass in slices, sets, etc.它类似于此处给出的另一个答案,除了它可以与任何序列一起使用,这意味着您还可以传入切片、集合等。
extension UISegmentedControl {
/// Replace the current segments with new ones using a given sequence of string.
/// - parameter withTitles: The titles for the new segments.
public func replaceSegments<T: Sequence>(withTitles: T) where T.Iterator.Element == String {
removeAllSegments()
for title in withTitles {
insertSegment(withTitle: title, at: numberOfSegments, animated: false)
}
}
}
For the sake of completeness (and because I ended up here looking for how to achieve the same thing in xib) here is how to do it in xib:为了完整起见(并且因为我最终在这里寻找如何在 xib 中实现同样的事情)这里是如何在 xib 中做到这一点:
work for me, UIsegmentedControll contains two segments, i want add one in index 2, use this code in swift 2.2 use:为我工作,UIsegmentedControll 包含两个段,我想在索引 2 中添加一个,在 swift 2.2 中使用此代码使用:
SEG_TipoFiltro.insertSegmentWithTitle("Title", atIndex: 2, animated: false)
adding and deleting segments in swift4 using code使用代码在 swift4 中添加和删除段
class ViewController: UIViewController {
@IBOutlet weak var segment1: UISegmentedControl!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
@IBAction func insert(_ sender: Any) {
segment1.insertSegment(withTitle: "\(segment1.numberOfSegments+1)", at: segment1.numberOfSegments, animated: true)
}
@IBAction func remove(_ sender: Any) {
segment1.removeSegment(at: segment1.numberOfSegments-1, animated: true)
}
}
Simple than u think: Swift 5.7比你想象的简单:Swift 5.7
func setSegmentedControl() {
// [1] remove all segments
segmentedControl.removeAllSegments()
// [2] insert your segments by your model
["title1", "title2", "title3"].enumerated().forEach { index, title in
segmentedControl.insertSegment(withTitle: title, at: index, animated: false)
}
// [3] optional - select default segment
segmentedControl.selectedSegmentIndex = 0
}
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