Save image to document directory in swift – Tutorial

Saving image to document directory of iOS app is very easy. As apple, already provided its own classes to store and retrieve image from document directory. We will use swift language, to save and retrieve image from document directory in iOS SDK.

Things we will cover

Create a document directory
Save image to document directory
Delete image from document directory(if existed)

Creating a document directory in swift

We can use FileManager class to create a custom directory inside our document directory

    func createDirectory(){
        let fileManager = FileManager.default
        let paths = (NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as NSString).appendingPathComponent("customDirectory")
        if !fileManager.fileExists(atPath: paths){
            try! fileManager.createDirectory(atPath: paths, withIntermediateDirectories: true, attributes: nil)
            }else{
                print("Already directory existed with the name specified.")
            }
        }

Getting path for out custom directory in IOS using swift

//MARK: - getDirectoryPath
    func getDirectoryPathWithFileName(_ name:String) -> String {
        let paths = ((NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as NSString).appendingPathComponent("customDirectory") as NSString).appendingPathComponent(name)
        return paths
    }

Save image to document directory in swift iOS sdk

 //MARK:- saveImageToDocumentDirectory
    func saveImageToDocumentDirectoryWith(_ imageName:String, andImageData imageData:Data) {
        let fileManger = FileManager.default
        let filePath = getDirectoryPathWithFileName(imageName)
        let isImageSaved =  fileManger.createFile(atPath: filePath as String, contents: imageData, attributes: nil)
        print("IsIMageSaved == \(isImageSaved)")
    }

Delete image from document directory in swift

  //MARK: - deleteFileWith
    func deleteFileWith(_ imageName:String) {
        let fileManger = FileManager.default
        let filePath = getDirectoryPathWithFileName(imageName)
        if fileManger.fileExists(atPath: filePath as String) {
            do {
                try fileManger.removeItem(atPath: filePath as String)
            } catch let error {
                print("Error Deleting file with name == \(imageName) with error == \(error.localizedDescription)")
            }
        }
    }