将文本转换为png图像SwiftUI

问题描述

面对您需要通过按下按钮将Texteditor中写入的所有内容转换为图像的事实。例如，即使文本包含多行并且在滚动时屏幕上也消失了。告诉我如何在swiftUI上实现它？

我当前正在使用此代码：

public struct ScreenshotableView<Content: View>: View {
    @Binding var shotting: Bool
    @Binding var tocopy: Bool
    var completed: (UIImage) -> Void
    var toCopycompleted: (UIImage) -> Void
    let content: Content
    
public init(shotting:Binding<Bool>,tocopy:Binding<Bool>,completed: @escaping (UIImage) -> Void,toCopycompleted: @escaping (UIImage) -> Void,@viewbuilder content: () -> Content) {
    self._shotting = shotting
    self._tocopy = tocopy
    self.completed = completed
    self.toCopycompleted = toCopycompleted
    self.content = content()
}
    
public var body: some View {
    
    func internalView(proxy: GeometryProxy) -> some View {
        if self.shotting {
            let frame = proxy.frame(in: .local)
            dispatchQueue.main.async {
                let screenshot = self.content.takeScreenshot(frame: frame,afterScreenUpdates: true)
                self.completed(screenshot)
            }
        }
        return Color.clear
    }
    
    return content.background(GeometryReader(content: internalView(proxy:)))
}

public extension View {
func takeScreenshot(frame:CGRect,afterScreenUpdates: Bool) -> UIImage {
    let hosting = UIHostingController(rootView: self)
    hosting.overrideUserInterfaceStyle = UIApplication.shared.windows.first?.overrideUserInterfaceStyle ?? UIUserInterfaceStyle.unspecified
    hosting.view.frame = frame
    return hosting.view.takeScreenshot(afterScreenUpdates: afterScreenUpdates)
}


public extension UIView {
func takeScreenshot() -> UIImage {
    UIGraphicsBeginImageContextWithOptions(self.bounds.size,self.isOpaque,0)
    self.layer.render(in: UIGraphicsGetCurrentContext()!)
    let snapshot = UIGraphicsGetimageFromCurrentimageContext()
    UIGraphicsEndImageContext()
    return snapshot!
}

func takeScreenshot(afterScreenUpdates: Bool) -> UIImage {
    if !self.responds(to: #selector(drawHierarchy(in:afterScreenUpdates:))) {
        return self.takeScreenshot()
    }
    UIGraphicsBeginImageContextWithOptions(self.bounds.size,0)
    let draw = self.drawHierarchy(in: self.bounds,afterScreenUpdates: afterScreenUpdates)
    print(draw)
    let snapshot = UIGraphicsGetimageFromCurrentimageContext()
    UIGraphicsEndImageContext()
    return snapshot!
}

}

但是这里的屏幕快照仅是从可见部分获得的，不包括滚动

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）