Open DB with FMDB in Swift - ios

Question

i would like to open an existing Database with FMDB. The DB should be a sqlite Database with the ending .db.
My Code is:
static let shared: DBManager = DBManager()
let databaseFileName = "/mydb.db"
var pathToDatabase: String!
var pathNSURL: NSURL!
var database: FMDatabase!
override init() {
super.init()
let documentsDirectory = (NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0] as NSString) as String
let zwerg = documentsDirectory + databaseFileName
let pathNSURL = NSURL(fileURLWithPath: zwerg)
let pathString = documentsDirectory + databaseFileName
pathToDatabase = pathNSURL.path
print(pathToDatabase)
}
func firstQuestion() -> Bool {
if openDatabase(){
let query = "SELECT * FROM movie"
do {
let result = try database.executeQuery(query, values: nil)
print(result)
}
catch {
print(error.localizedDescription)
}
database.close()
return true
}
return false
}
func openDatabase() -> Bool {
if database == nil {
print(FileManager.default.fileExists(atPath: pathToDatabase))
if FileManager.default.fileExists(atPath: pathToDatabase) {
print("Database set new path -> File exists")
database = FMDatabase(path: pathToDatabase)
}
}
if database != nil {
print("Database != nil")
if database.open() {
print("Database is open in != nil")
return true
}
}
return false
}
Im calling the Method firstQuestion() from a VC:
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
print(DBManager.shared.firstQuestion())
}
My Problem is that the fileExists-Method always returns false. The Filename is correct. This is my first Project with a database in swift, so perhaps i made a stupid mistake... Any suggestions?
Thanks for your help!

Answer 1

let fileManager = FileManager.default
let docURL = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first!
let databaseURL = docURL.appendingPathComponent("databaseNaeme.db")
and initialize database as:
database = FMDatabase(path: databaseURL.absoluteString)