Unzipping files with SSZipArchive - Swift

问题:

I'm trying to unzip a file using the SSZipArchive framework.

let unzipper = SSZipArchive.unzipFileAtPath(String(document), toDestination: String(documentsUrl))

This is what I'm trying at the moment to unzip the file, and here is the path of the file:

unzipFileAtPath - Document at path: file:///private/var/mobile/Containers/Data/Application/94ADDB12-78A2-4798-856D-0626C41B7AC2/Documents/tSOUTrIayb.zip false

And I am trying to unzip it to this path:

NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask).first!

Unfortunately it doesn't seem to be working, each time there is nothing new being saved into the documents directory which I am printing out. I also print the 'unzipper' variable which just prints false, whatever that means.

I can't find any documentation for the framework so I'm not entirely sure how to get this working

回答1:

Assume that you have implement all things, then also providing solution in few steps

1. Drag SSZipArchive folder from the demo which you can download from here.

2. Write #import "SSZipArchive.h” in yourProjectname-Bridging-Header.h if you already have. Otherwise create new header file named as mention above.

3. If you want to use delegate methods set delegate to class

   class YourViewController: UIViewController, SSZipArchiveDelegate {.......
   

4. For creating zip form folder I have added sample folder to project (Main bundle)

5. First create folder in document directory where you want to save your zip file

   var paths = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
   let documentsDir = paths[0]
   let zipPath =  documentsDir.stringByAppendingString("/MyZipFiles") // My folder name in document directory
   
   let fileManager = NSFileManager.defaultManager()
   
   let success = fileManager.fileExistsAtPath(zipPath) as Bool
   
   if success == false {
   
       do {
   
           try! fileManager.createDirectoryAtPath(zipPath, withIntermediateDirectories: true, attributes: nil)
       }
   }
   

6. Now create zip file

   var inputPath = NSBundle.mainBundle().resourcePath
   inputPath = inputPath!.stringByAppendingString("/Sample") // My folder which already put into project
   
   let archivePath = zipPath.stringByAppendingString(“/Demo.zip") // Sample folder is going to zip with name Demo.zip
   SSZipArchive.createZipFileAtPath(archivePath, withContentsOfDirectory:inputPath)
   

7. For unzipping file create folder in document directory (Where you want to save)

   let destPath = zipPath.stringByAppendingString("/Hello")
   let fileManager = NSFileManager.defaultManager()
   
   let success = fileManager.fileExistsAtPath(destPath) as Bool
   
   if success == false {
   
       do {
   
           try! fileManager.createDirectoryAtPath(destPath, withIntermediateDirectories: true, attributes: nil)
       }
   }
   

8. Unzip folder

   SSZipArchive.unzipFileAtPath(archivePath, toDestination:destPath, delegate:self)
   

9. Print your path, and you can check there your file will be saved

   print(zipPath)
   

回答2:

TLDR; check that your source and destination paths don't begin with the file:// prefix.

More Detail...

I had the same issue, SSZipArchive would run, the success variable would print out false, no delegates were called and no debug messages printed from SSZipArchive.

I was running it like this:

let sourcePath = sourceURL.absoluteString
let destPath = destURL.absoluteString

print("Source: \(sourcePath)")
print("Dest: \(destPath)")

let success = SSZipArchive.unzipFile(atPath: sourcePath, toDestination: destPath, delegate: self)
print("ZipArchive - Success: \(success)")

and my log statements were printing out

Source: file:///var/containers/Bundle/Application/longAppIDHere/testApp.app/Bundle1.zip
Dest: file:///var/mobile/Containers/Data/Application/longAppIDHere/Library/Application Support/testFolder/
ZipArchive - Success: false

I changed my path constructors to:

let sourcePath = sourceURL.relativePath
let destPath = destURL.relativePath

and now SSZipArchive works fine.