错误：
2016-07-27 13:53:24.004 DataManipulationApp[1379:56100] *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 2 beyond bounds [0 .. 1]'
*** First throw call stack:
(
0 CoreFoundation 0x000000010ecc5d85 __exceptionPreprocess + 165
1 libobjc.A.dylib 0x000000010f16cdeb objc_exception_throw + 48
2 CoreFoundation 0x000000010eba3804 -[__NSArrayM objectAtIndex:] + 212
3 DataManipulationApp 0x000000010d06f36d _TFC19DataManipulationApp14ViewController16btn_Edit_ClickedfCSo8UIButtonT_ + 861
4 DataManipulationApp 0x000000010d06f9ea _TToFC19DataManipulationApp14ViewController16btn_Edit_ClickedfCSo8UIButtonT_ + 58
5 UIKit 0x000000010d603a8d -[UIApplication sendAction:to:from:forEvent:] + 92
6 UIKit 0x000000010d776e67 -[UIControl sendAction:to:forEvent:] + 67
7 UIKit 0x000000010d777143 -[UIControl _sendActionsForEvents:withEvent:] + 327
8 UIKit 0x000000010d776263 -[UIControl touchesEnded:withEvent:] + 601
9 UIKit 0x000000010d67699f -[UIWindow _sendTouchesForEvent:] + 835
10 UIKit 0x000000010d6776d4 -[UIWindow sendEvent:] + 865
11 UIKit 0x000000010d622dc6 -[UIApplication sendEvent:] + 263
12 UIKit 0x000000010d5fc553 _UIApplicationHandleEventQueue + 6660
13 CoreFoundation 0x000000010ebeb301 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
14 CoreFoundation 0x000000010ebe122c __CFRunLoopDoSources0 + 556
15 CoreFoundation 0x000000010ebe06e3 __CFRunLoopRun + 867
16 CoreFoundation 0x000000010ebe00f8 CFRunLoopRunSpecific + 488
17 GraphicsServices 0x000000011191bad2 GSEventRunModal + 161
18 UIKit 0x000000010d601f09 UIApplicationMain + 171
19 DataManipulationApp 0x000000010d0743e2 main + 114
20 libdyld.dylib 0x000000010fc3792d start + 1
21 ??? 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)
代码：
为发布的代码设置错误，我需要帮助解决问题
import UIKit
class HomeCellView: UITableViewCell
{
@IBOutlet weak var btnDelete: UIButton!
@IBOutlet weak var btnEdit: UIButton!
@IBOutlet weak var lbl_Email: UILabel!
}
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate
{
@IBOutlet weak var HomeTableView: UITableView!
var databasepath:String!
var arrayStudInfo:NSMutableArray!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
arrayStudInfo = NSMutableArray()
let filemgr = NSFileManager.defaultManager()
let dirpath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
let docdir = dirpath[0] as String
databasepath = docdir.stringByAppendingString("StudentDataManipulation.sqlite");
if filemgr.fileExistsAtPath(databasepath as String)
{
let contactDB = FMDatabase(path: databasepath as String)
if contactDB == nil
{
print("Error: \(contactDB.lastErrorMessage())")
}
if contactDB.open()
{
let sql_stmt = "CREATE TABLE IF NOT EXISTS StudentData (Name TEXT, Phone TEXT, Email TEXT PRIMARY KEY NOT NULL, Comment TEXT)"
if !contactDB.executeStatements(sql_stmt)
{
print("Error: \(contactDB.lastErrorMessage())")
}
contactDB.close()
}
else
{
print("Error: \(contactDB.lastErrorMessage())")
}
}
}
override func viewWillAppear(animated: Bool)
{
super.viewWillAppear(true)
listAllData()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// UITableViewDataSource Methods
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return arrayStudInfo.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCellWithIdentifier("cellhome") as! HomeCellView
cell.lbl_Email.text = arrayStudInfo[indexPath.row]["Email"] as? String
cell.btnEdit.tag = indexPath.row
cell.btnDelete.tag = indexPath.row
// cell.btnDelete.addTarget(self, action: Selector("btn_Delete_Clicked"), forControlEvents: UIControlEvents.TouchUpInside )
// cell.btnEdit.addTarget(self, action: Selector("btn_Edit_Clicked"), forControlEvents: UIControlEvents.TouchUpInside)
cell.btnEdit.addTarget(self, action: #selector(ViewController.btn_Delete_Clicked (_:)), forControlEvents: UIControlEvents.TouchUpInside)
cell.btnEdit.addTarget(self, action: #selector(ViewController.btn_Edit_Clicked(_:)), forControlEvents: UIControlEvents.TouchUpInside)
return cell
}
// Edit Button Clicked
@IBAction func btn_Edit_Clicked(sender: UIButton)
{
let updateView = self.storyboard?.instantiateViewControllerWithIdentifier("UpdateScreen") as! UpdateScreen
print("Sender.Tag = \(sender.tag)")
updateView.strEmail = arrayStudInfo[sender.tag]["Email"] as? String
updateView.dictRecord = (arrayStudInfo[sender.tag] as! NSDictionary)
self.navigationController?.pushViewController(updateView, animated: true)
}
//Delete Button Clicked
@IBAction func btn_Delete_Clicked(sender: UIButton)
{
let contactDB = FMDatabase(path: databasepath as String)
let strDelete = arrayStudInfo[sender.tag]["Email"] as? String
if contactDB.open()
{
let deleteSQL = "DELETE FROM StudentData WHERE Email='\(strDelete!)'"
let result = contactDB.executeUpdate(deleteSQL, withArgumentsInArray: nil)
if !result
{
print("Error: \(contactDB.lastErrorMessage())")
}
else
{
print("Deleted Record.")
listAllData()
}
}
else
{
print("Error: \(contactDB.lastErrorMessage())")
}
contactDB.close()
}
func listAllData()
{
arrayStudInfo.removeAllObjects();
let contactDB = FMDatabase(path: databasepath as String)
if contactDB.open()
{
let filemgr = NSFileManager.defaultManager()
let dirpath = NSSearchPathForDirectoriesInDomains(.DocumentDirectory, .UserDomainMask, true)
let docdir = dirpath[0] as String
databasepath = docdir.stringByAppendingString("StudentDataManipulation.sqlite");
if filemgr.fileExistsAtPath(databasepath as String)
{
let contactDB = FMDatabase(path: databasepath as String)
if contactDB == nil
{
print("Error: \(contactDB.lastErrorMessage())")
}
if contactDB.open()
{
let sql_stmt = "CREATE TABLE IF NOT EXISTS StudentData (Name TEXT, Phone TEXT, Email TEXT PRIMARY KEY NOT NULL, Comment TEXT)"
if !contactDB.executeStatements(sql_stmt)
{
print("Error: \(contactDB.lastErrorMessage())")
}
let SelectQuery = "SELECT * FROM StudentData"
if let results:FMResultSet? = contactDB.executeQuery(SelectQuery, withArgumentsInArray: nil)
{
while results?.next() == true
{
let dictRecord = results?.resultDictionary()
arrayStudInfo.insertObject(dictRecord!, atIndex: arrayStudInfo.count)
print("\nRESULT : \(results?.resultDictionary())")
}
HomeTableView.reloadData()
}
else
{
print("Recored not found");
}
contactDB.close()
}
else
{
print("Error: \(contactDB.lastErrorMessage())")
}
}
contactDB.close()
}
else
{
print("Error: \(contactDB.lastErrorMessage())")
}
}
/*
func listAllData()
{
arrayStudInfo.removeAllObjects();
let contactDB = FMDatabase(path: databasepath as String)
if contactDB.open()
{
let SelectQuery = "SELECT * FROM StudentData"
if let results:FMResultSet? = contactDB.executeQuery(SelectQuery, withArgumentsInArray: nil)
{
while results?.next() == true
{
let dictRecord = results?.resultDictionary()
arrayStudInfo.insertObject(dictRecord!, atIndex: arrayStudInfo.count)
print("\nRESULT : \(results?.resultDictionary())")
}
HomeTableView.reloadData()
}
else
{
print("Recored not found");
}
contactDB.close()
}
else
{
print("Error: \(contactDB.lastErrorMessage())")
}
}
*/
}
答案 0 :(得分：0)
这两行：
cell.btnEdit.addTarget(self, action: #selector(ViewController.btn_Delete_Clicked (_:)), forControlEvents: UIControlEvents.TouchUpInside)
cell.btnEdit.addTarget(self, action: #selector(ViewController.btn_Edit_Clicked(_:)), forControlEvents: UIControlEvents.TouchUpInside)
您将两个操作绑定到cell.btnEdit。当您点击btnEdit时，首先执行ViewController.btn_Delete_Clicked(_:)，删除一个数据条目，然后执行ViewController.btn_Edit_Clicked(_:)。那时，arrayStudInfo[sender.tag]不可用，因为您看，已经删除了。
考虑到可以重复使用每个单元格，上面的两行必须是这样的：
cell.btnDelete.removeTarget(nil, action: nil, forControlEvents: .TouchUpInside)
cell.btnDelete.addTarget(self, action: #selector(ViewController.btn_Delete_Clicked (_:)), forControlEvents: .TouchUpInside)
cell.btnEdit.removeTarget(nil, action: nil, forControlEvents: .TouchUpInside)
cell.btnEdit.addTarget(self, action: #selector(ViewController.btn_Edit_Clicked(_:)), forControlEvents: .TouchUpInside)
请尝试。