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在我的IOS应用程序中，我使用FMDB数据库来存储数据。我在检索数据时遇到问题。实际上，在我的应用程序的最后一页，当我点击“sendtowatch”按钮时，应该保存数据，同时应该检索数据，以便数据可以显示在我的手表应用程序中。我运行的应用程序的截图低于。我下面的源代码是关于从FMDB数据库检索数据的问题
screenshot ofmy running app screenshot
@IBAction func sendToWatch(sender: AnyObject) {
let ticketDB = FMDatabase(path: databasePath as String)
if ticketDB.open()
{
let insertSQL = "INSERT INTO TICKET (image, ticket_category, ticket_type, date, time) VALUES ('\(display_image.image!)', '\(ticket_category.text!)', '\(ticket_type_name.text!)', '\(ticket_date.text!)', '\(ticket_time.text!)')"
let result = ticketDB.executeUpdate(insertSQL,withArgumentsInArray: nil)
if !result
{
print("Error: \(ticketDB.lastErrorMessage())")
} else
{
let alt = PMAlertController(title: "Success!", description: "Your data is saved to Database!", image: UIImage(named: ""), style: .Alert)
alt.addAction(PMAlertAction(title: "OK!", style: .Default, action: { (ACTION) -> Void in
let ticketDB = FMDatabase(path: self.databasePath as String)
if ticketDB.open()
{
let querySQL = "SELECT * FROM TICKET"
let result: FMResultSet? = ticketDB.executeQuery(querySQL, withArgumentsInArray: nil)
if let result = result
{
self.ticketDataArray = NSMutableArray()
while result.next()
{
let ticketInfo = NSMutableDictionary()
ticketInfo.setObject(result.stringForColumn("image"), forKey: "image")
ticketInfo.setObject(result.stringForColumn("ticket_category"), forKey: "ticket_category")
ticketInfo.setObject(result.stringForColumn("ticket_type"), forKey: "ticket_type")
ticketInfo.setObject(result.stringForColumn("date"), forKey: "date")
ticketInfo.setObject(result.stringForColumn("time"), forKey: "time")
self.ticketDataArray.addObject(ticketInfo)
}
}else{
print("Error: \(ticketDB.lastErrorMessage())")
}
ticketDB.close()
}
}))
self.presentViewController(alt, animated: true, completion: nil)
print(databasePath)
}
}
}
}