Ios 使用存储文件的路径作为字符串存储和检索图像
我正在使用Realm并将捕获图像的文件路径存储为Ios 使用存储文件的路径作为字符串存储和检索图像,ios,swift,image,filepath,nsfilemanager,Ios,Swift,Image,Filepath,Nsfilemanager,我正在使用Realm并将捕获图像的文件路径存储为Strings。我想稍后检索它们以便在tableView中使用。下面是存储每个图像路径的代码: func saveImage(imageName: String){ //create an instance of the FileManager let fileManager = FileManager.default //get the image path thisImagePath = (NSSearchPat
String
s。我想稍后检索它们以便在tableView中使用。下面是存储每个图像路径的代码:
func saveImage(imageName: String){
//create an instance of the FileManager
let fileManager = FileManager.default
//get the image path
thisImagePath = (NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as NSString).appendingPathComponent(imageName)
//get the image taken with camera
let image = originalCapturedImage
//get the PNG data for this image
let data = UIImagePNGRepresentation(image!)
//store it in the document directory
fileManager.createFile(atPath: thisImagePath as String, contents: data, attributes: nil)
print("Picture path at assignment \n")
print(thisImagePath as Any)
}
下面是检索图像的代码:
...
var paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
let documentsPath = paths[0] //Get the docs directory
let filePath = URL(fileURLWithPath: documentsPath).appendingPathComponent(item.picPath).path
let image = UIImage(contentsOfFile: filePath)
print("Picture path at retrieval \n")
print(item.picPath as Any)
cell.imageWell.image = image
cell.imageWell.clipsToBounds = true
return cell
}
以下是运行时文件路径的比较:
Picture path at assignment
/var/mobile/Containers/Data/Application/0E9CACAD-C6B3-4F6C-B0DB-72C43AC722E1/Documents/1535219147
...
...
Picture path at retrieval
/var/mobile/Containers/Data/Application/0E9CACAD-C6B3-4F6C-B0DB-72C43AC722E1/Documents/1535219147
路径对我来说是相同的,但是没有图像出现。我已经搜索了这么多,在某一点上遇到了一个关于使用URL
作为文件路径的提到。不知怎的,我忘了那个条目,再也找不到了
任何帮助都将不胜感激 您可以尝试使用以下代码将图像写入文件,而不是创建包含内容的文件<代码>尝试?数据。写入(到:URL(fileURLWithPath:documentsPath)) 您也可以参考下面的代码来保存图像
class func saveImageToFileWithDirectory(_ imageData:Data, fileName:String, folderName : String? = nil) {
let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true) as NSArray
let documentsDirectory = paths.object(at: 0) as! NSString
let path = documentsDirectory.appendingPathComponent(folderName) as NSString
if !FileManager.default.fileExists(atPath: path as String) {
do {
try FileManager.default.createDirectory(atPath: path as String, withIntermediateDirectories: true, attributes: nil)
} catch let error as NSError {
print(error.localizedDescription);
}
}
let imagePath = path.appendingPathComponent(fileName)
if !FileManager.default.fileExists(atPath: imagePath as String) {
try? imageData.write(to: URL(fileURLWithPath: imagePath))
} }
检索图像的代码看起来不错。如果你在这方面也需要帮助,请评论,我也会发布
希望这能解决你的问题