- A dynamically flowing progress bar.
- 一個動態流動的進度條.
dependencies: [
.package(url: "https://github.com/William-Weng/WWProgressView.git", .upToNextMajor(from: "1.0.3"))
]
| 函式 | 功能 |
|---|---|
| updateHeight(_:radius:startAngle:count:) | 更新百分比 |
import UIKit
import WWProgressView
final class ViewController: UIViewController {
@IBOutlet weak var myProgressView: WWProgressView!
private var percentage: Double = 0
private var timer: CADisplayLink?
private var startAngle: Int = 0
override func viewDidLoad() { super.viewDidLoad() }
@IBAction func running(_ sender: UIButton) { update() }
/// 使用定時器更新 (CADisplayLink)
func update() {
percentage = 100
timer?.invalidate()
timer = nil
timer = CADisplayLink(target: self, selector: #selector(updatePercentage))
timer?.preferredFramesPerSecond = 60
timer?._fire()
}
/// 更新進度條 (高度)
/// - Parameter sender: CADisplayLink
@objc private func updatePercentage(_ sender: CADisplayLink) {
let height = myProgressView.frame.height * percentage / 100
myProgressView.updateHeight(height, radius: 4.0, startAngle: startAngle % 360, count: 5.0)
startAngle += 5
percentage -= 0.5
}
}