如何解决通过UIActivityView共享时如何为屏幕快照文件提供文件名
我创建了一个带有打印的VC,并共享了一堆计算的友好版本。当我按“分享”时,会出现一个小图标和所有很棒的分享选项。我不知道如何在小图标旁边添加某种文件名。我认为,如果我能做到这一点,它将看起来更加专业。
这是我的代码:
import UIKit
class EvenPrintableViewController: UIViewController {
@IBOutlet weak var widthSizeTransfer: UILabel!
@IBOutlet weak var heightSizeTransfer: UILabel!
@IBOutlet weak var lengthTransfer: UILabel!
@IBOutlet weak var calcOutput: UILabel!
// Instantiate variables for Even transfer
var largeSizeRelay: String?
var lengthSizeRelay: String?
var heightRelay: String?
var calcOutputRelay: String?
override func viewDidLoad() {
super.viewDidLoad()
// Sets share icon to share/print view
navigationItem.rightBarButtonItem = UIBarButtonItem(barButtonSystemItem: .action,target: self,action: #selector(shareTapped))
// Assign labels to Metric Even VC values via instances above
widthSizeTransfer.text = witdhSizeRelay
heightSizeTransfer.text = heightSizeRelay
heightTransfer.text = heightRelay
calcOutput.text = calcOutputRelay
}
// Share function for share button
@objc func shareTapped() {
let renderer = UIGraphicsImageRenderer(size: view.bounds.size)
let image = renderer.image { ctx in
view.drawHierarchy(in: view.bounds,afterScreenUpdates: true)
}
let vc = UIActivityViewController(activityItems: [image],applicationActivities: [])
vc.excludedActivityTypes = [.assignToContact,.addToReadingList]
vc.popoverPresentationController?.barButtonItem = navigationItem.rightBarButtonItem
present(vc,animated: true)
}
}
解决方法
首先将UIImage
保存为临时png / jpg文件:
guard let imageData = image.pngData() else { return }
然后将其保存为临时文件,以便您选择文件名:
let tempDir = FileManager.default.temporaryDirectory
let imgFileName = "YOUR_IMG_FILE_NAME.png"
let tempImgDir = tempDir.appendingPathComponent(imgFileName)
try? imageData.write(to: tempImgDir)
然后您可以共享URL:
// Your code
let vc = UIActivityViewController(activityItems: [tempImgDir],applicationActivities: [])
P.S。该文件只是临时的。
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