Swift 将图像保存到相机卷时应用程序崩溃
当我尝试将扫描保存到相机滚动时,应用程序崩溃 代码如下:Swift 将图像保存到相机卷时应用程序崩溃,swift,visionkit,Swift,Visionkit,当我尝试将扫描保存到相机滚动时,应用程序崩溃 代码如下: func documentCameraViewController(_ controller: VNDocumentCameraViewController, didFinishWith scan: VNDocumentCameraScan) { // Make sure the user scanned at least one page guard scan.pageCount >= 1 else {
func documentCameraViewController(_ controller: VNDocumentCameraViewController, didFinishWith scan: VNDocumentCameraScan) {
// Make sure the user scanned at least one page
guard scan.pageCount >= 1 else {
// You are responsible for dismissing the VNDocumentCameraViewController.
controller.dismiss(animated: true)
return
}
// This is a workaround for the VisionKit bug which breaks the `UIImage` returned from `VisionKit`
// See the `Image Loading Hack` section below for more information.
var arrImages = [UIImage]()
for i in 0...scan.pageCount-1 {
let originalImage = scan.imageOfPage(at: i)
let fixedImage = reloadedImage(originalImage)
arrImages.append(fixedImage)
}
controller.dismiss(animated: true)
let documentDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
let docURL = documentDirectory.appendingPathComponent("Delete This")
if Filetype == 1 {
let data = createNewPDF(arrImage: arrImages)
do {
try data?.write(to: docURL, options: .completeFileProtection)
print("Success")
} catch(let error) {
print("error is \(error.localizedDescription)")
}
} else {
if Filetype == 2 {
if customjg == 68 {
for i in 0...scan.pageCount-1 {
let originalImage = scan.imageOfPage(at: i)
let fixedImage = originalImage.jpegData(compressionQuality: 0.7)
let reloadedImage = UIImage(data: fixedImage!)
UIImageWriteToSavedPhotosAlbum(reloadedImage!, nil, nil, nil);
//arrImages.append(fixedImage)
}
if customjg == 69 {
let originalImage = scan.imageOfPage(at: 1)
let rere = self.resizeImagezz(image: originalImage, targetSize: CGSize(width: Widthv, height: Heightv))
let fixedImage = rere.jpegData(compressionQuality: 0.7)
let reloadedImage = UIImage(data: fixedImage!)
UIImageWriteToSavedPhotosAlbum(reloadedImage!, nil, nil, nil);
//arrImages.append(fixedImage)
}
}
}else{
if Filetype == 3 {
for i in 0...scan.pageCount-1 {
let originalImage = scan.imageOfPage(at: i)
let fixedImage = originalImage.pngData()
let reloadedImage = UIImage(data: fixedImage!)
UIImageWriteToSavedPhotosAlbum(reloadedImage!, nil, nil, nil);
//arrImages.append(fixedImage)
}
}
}
}
}
文件类型为段控制开关盒。默认情况下,第一个选项是JPEG。
在崩溃之前,它甚至没有请求相机卷访问权限(是的,我已经把它放在info.plist文件中)
到目前为止,只有PDF可用
但问题在于,当安装在iOS 14 Beta版上时,一切都能正常工作。
请尽快帮我纠正这个问题
提前感谢您的帮助。根据文档-,
我们应该实现completionSelector
。对于与self相同的集合completionTarget
。
按如下方式实现api:
UIImageWriteToSavedPhotosAlbum(reloadedImage!, self, #selector(image(_:didFinishSavingWithError:contextInfo:)), nil)
然后在此completionSelector中:
@objc func image(_ image: UIImage, didFinishSavingWithError error: NSError?, contextInfo: UnsafeRawPointer) {
guard let error = error else {//success return}
// found error
print(error)
}
你有相当多的强制展开,在将项目用作强制展开之前,你是否考虑过将其展开,如果这些项目为零,则会导致崩溃?如果你正在寻求崩溃帮助,你应该添加有关崩溃的信息,并指出导致崩溃的行。到底是哪一行导致了崩溃?控制台中是否有任何错误消息?你知道每个
代码>正在大叫:如果为零,则崩溃?你需要找出问题所在,这是调试的一个重要部分。不管发生什么故障,你都应该使用照片框架,它更现代,更易于使用。