[英]linking UIProgressView to show download progress using Firebase
我正在尝试显示打印进度时我下载的文件的进度视图,这是正确的,但是当我在进度视图中实施它时,这是完全错误的,它的执行率是3000%,这是我的代码。 我正在使用MHRadialProgressView
downloadTask.observe(.progress) { (snapshot) -> Void in
// Download reported progress
let percentComplete = 100 * Double(snapshot.progress!.completedUnitCount) / Double(snapshot.progress!.totalUnitCount)
print("percentComplete")
self.progressView.moveNext(currentprogress as NSNumber!)
// Update the progress indicator
}
当我使用MBProgressHUD时,这是它的代码
downloadTask.observe(.progress) { (snapshot) -> Void in
// Download reported progress
let percentComplete = 100 * Float(snapshot.progress!.completedUnitCount)
/ Float(snapshot.progress!.totalUnitCount)
let hud = MBProgressHUD.showAdded(to: (self.navigationController?.view)!, animated: true)
// Set the determinate mode to show task progress.
hud.mode = MBProgressHUDMode.determinate
hud.label.text = NSLocalizedString("Loading...", comment: "HUD loading title")
// Set up NSProgress
let progressObject = Progress(totalUnitCount: 100)
hud.progressObject = progressObject
// Configure a cancel button.
DispatchQueue.global(qos: .default).async(execute: {() -> Void in
// Do something useful in the background and update the HUD periodically.
while progressObject.fractionCompleted < 1.0 {
progressObject.becomeCurrent(withPendingUnitCount: 1)
progressObject.resignCurrent()
usleep(useconds_t(percentComplete))
}
DispatchQueue.main.async(execute: {() -> Void in
hud.hide(animated: true)
})
})
}
我收到此错误nanfatal错误:浮点值不能转换为UInt32,因为它是无穷大或NaN
一些建议:
MBProgressHUD
,它可以让您设置进度对象而忘却它 。
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