CODEWITHSUNDEEP
swiftcocoafoundation
mdmb
mdmb

Reputation: 5283

Getting bundle identifier in Swift

I'm trying to get bundleID using app's directory and I'm getting an error: EXC_BAD_ACCESS(code=1, address=0xd8)

application.directory! is a String

let startCString = (application.directory! as NSString).UTF8String //Type: UnsafePointer<Int8>
let convertedCString = UnsafePointer<UInt8>(startCString) //CFURLCreateFromFileRepresentation needs <UInt8> pointer
let length = application.directory!.lengthOfBytesUsingEncoding(NSUTF8StringEncoding)
let dir = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault, convertedCString, length, false)
let bundle = CFBundleCreate(kCFAllocatorDefault, dir)
let result = CFBundleGetIdentifier(bundle)

and I get this error on the result line.

What am I doing wrong here?

Upvotes: 1

Views: 8139

Answers (2)

Ash
Ash

Reputation: 5712

If you are trying to get it programmatically , you can use below line of code :

Objective-C:

NSString *bundleIdentifier = [[NSBundle mainBundle] bundleIdentifier];

Swift 3.0:

let bundleIdentifier =  Bundle.main.bundleIdentifier

(Updated for latest swift It will work for both iOS and Mac apps.)

For More Info, Check here :

Apple Docs: https://developer.apple.com/documentation/foundation/bundle#//apple_ref/occ/instm/NSBundle/bundleIdentifier

Upvotes: 5

Martin R
Martin R

Reputation: 539925

One potential problem with your code is that the pointer obtained in

let startCString = (application.directory! as NSString).UTF8String //Type: UnsafePointer<Int8>

is valid only as long as the temporary NSString exists. But that conversion to a C string can be done "automatically" by the compiler (compare String value to UnsafePointer<UInt8> function parameter behavior), so a working version should be

let dir = CFURLCreateFromFileSystemRepresentation(kCFAllocatorDefault, path, Int(strlen(path)), false)
let bundle = CFBundleCreate(kCFAllocatorDefault, dir)
let result = CFBundleGetIdentifier(bundle)

But you can simply create a NSBundle from a given path and obtain its identifier:

let ident = NSBundle(path: path)!.bundleIdentifier!

Full example with added error checking:

let path = "/Applications/TextEdit.app"

if let bundle = NSBundle(path: path) {
    if let ident = bundle.bundleIdentifier {
        print(ident) // com.apple.TextEdit
    } else {
        print("bundle has no identifier")
    }
} else {
    print("bundle not found")
}

Upvotes: 2

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