swift - AppDelegate 中的 EXC_BAD_ACCESS
问题描述
我是一名 Android 开发人员,我只做一些副业 iOS 编程,所以请原谅我是一个初学者。
我遇到了一个我似乎无法解决的棘手问题。
当在应用程序的“主页”中时,用户可以点击一个视图来访问另一个视图控制器。问题是,新的视图控制器似乎使应用程序在 viewWillAppear() 之后崩溃。
从“主页”:
let tap_datiutente = UITapGestureRecognizer(target: self, action: #selector(self.func_tap_datiutente(_:)))
view_datiutente.addGestureRecognizer(tap_datiutente)
[...]
@objc func func_tap_datiutente (_ sender : UITapGestureRecognizer) {
if pref_login?.integer(forKey: Costanti.sp_stato_login) == Costanti.sp_int_visitatore {
// Just an alert for non-registered users, who can't access this view //
Operatore.MostraAlert(viewController: self, titolo: "Attenzione", testo: "Questa funzione è riservata agli utenti già registrati.")
} else {
// This is the action performed to reach the view controller //
self.performSegue(withIdentifier: "seg_home_profilo", sender: self)
}
}
这是代码:
import UIKit
import Alamofire
class DatiUtente: UIViewController, UITextFieldDelegate {
@IBOutlet weak var scroll_view: UIScrollView!
@IBOutlet weak var view_1: UIView!
@IBOutlet weak var tf_nome_fatt: UITextField!
@IBOutlet weak var tf_cognome_fatt: UITextField!
@IBOutlet weak var tf_indirizzo_fatt: UITextField!
@IBOutlet weak var tf_numciv_fatt: UITextField!
@IBOutlet weak var tf_cap_fatt: UITextField!
@IBOutlet weak var tf_comune_fatt: UITextField!
@IBOutlet weak var tf_provincia_fatt: UITextField!
@IBOutlet weak var tf_cod_fisc_fatt: UITextField!
@IBOutlet weak var tf_piva_fatt: UITextField!
@IBOutlet var constr_1: NSLayoutConstraint!
@IBOutlet weak var view_2: UIView!
@IBOutlet weak var tf_nome_allievo: UITextField!
@IBOutlet weak var tf_cognome_allievo: UITextField!
@IBOutlet weak var tf_indirizzo_allievo: UITextField!
@IBOutlet weak var tf_cap_allievo: UITextField!
@IBOutlet weak var tf_comune_allievo: UITextField!
@IBOutlet weak var tf_provincia_allievo: UITextField!
@IBOutlet weak var tf_numciv_allievo: UITextField!
@IBOutlet weak var tf_codfisc_allievo: UITextField!
@IBOutlet weak var tf_numcell_allievo: UITextField!
@IBOutlet weak var tf_email_allievo: UITextField!
@IBOutlet weak var view_privacy_1: UIView!
@IBOutlet weak var switch_privacy_1: UISwitch!
@IBOutlet weak var view_privacy_2: UIView!
@IBOutlet weak var switch_privacy_2: UISwitch!
@IBOutlet var constr_2: NSLayoutConstraint!
/* METODI DI OVERRIDE */
override func viewDidLoad() {
print("viewDidLoad")
super.viewDidLoad()
let pref_login = UserDefaults(suiteName: Costanti.SP_LOGIN)
tf_nome_fatt.text = pref_login?.string(forKey: "nomefatt")
tf_cognome_fatt.text = pref_login?.string(forKey: "cognomefatt")
tf_indirizzo_fatt.text = pref_login?.string(forKey: "indirfatt")
tf_numciv_fatt.text = pref_login?.string(forKey: "numcivfatt")
tf_cap_fatt.text = pref_login?.string(forKey: "capfatt")
tf_comune_fatt.text = pref_login?.string(forKey: "comunefatt")
tf_provincia_fatt.text = pref_login?.string(forKey: "provfatt")
tf_cod_fisc_fatt.text = pref_login?.string(forKey: "codfiscfatt")
tf_piva_fatt.text = pref_login?.string(forKey: "pivafatt")
tf_nome_allievo.text = pref_login?.string(forKey: "nome")
tf_cognome_allievo.text = pref_login?.string(forKey: "cognome")
tf_indirizzo_allievo.text = pref_login?.string(forKey: "indirizzo")
tf_numciv_allievo.text = pref_login?.string(forKey: "numciv")
tf_cap_allievo.text = pref_login?.string(forKey: "cap")
tf_comune_allievo.text = pref_login?.string(forKey: "comune")
tf_provincia_allievo.text = pref_login?.string(forKey: "prov")
tf_codfisc_allievo.text = pref_login?.string(forKey: "codfisc")
tf_numcell_allievo.text = pref_login?.string(forKey: "cell")
tf_email_allievo.text = pref_login?.string(forKey: "email")
let tapGesture = UITapGestureRecognizer(target: self, action: #selector(self.dismissKeyboard (_:)))
tapGesture.cancelsTouchesInView = false
self.view.addGestureRecognizer(tapGesture)
let tap_privacy_1 = UITapGestureRecognizer(target: self, action: #selector(self.privacy(_:)))
view_privacy_1.addGestureRecognizer(tap_privacy_1)
let tap_privacy_2 = UITapGestureRecognizer(target: self, action: #selector(self.privacypolicy(_:)))
view_privacy_2.addGestureRecognizer(tap_privacy_2)
scroll_view.delaysContentTouches = false
print("viewDidLoad finished")
}
override func viewWillAppear(_ animated: Bool) {
print("viewWillAppear")
super.viewWillAppear(animated)
print("viewWillAppear finished")
}
override func viewDidAppear(_ animated: Bool) {
print("viewDidAppear")
super.viewDidAppear(animated)
Mostra_View_1()
print("viewDidAppear finished")
}
}
[...]
private func Mostra_View_1() {
view_1.isHidden = false
view_2.isHidden = true
HideKeyboard()
constr_1.constant = 25
constr_1.isActive = true
constr_2.isActive = false
scroll_view.scrollToTop()
}
private func Mostra_View_2() {
view_2.isHidden = false
view_1.isHidden = true
HideKeyboard()
constr_2.constant = 25
constr_1.isActive = false
constr_2.isActive = true
scroll_view.scrollToTop()
}
private func HideKeyboard() {
tf_nome_fatt.resignFirstResponder()
tf_cognome_fatt.resignFirstResponder()
tf_indirizzo_fatt.resignFirstResponder()
tf_numciv_fatt.resignFirstResponder()
tf_cap_fatt.resignFirstResponder()
tf_comune_fatt.resignFirstResponder()
tf_provincia_fatt.resignFirstResponder()
tf_cod_fisc_fatt.resignFirstResponder()
tf_piva_fatt.resignFirstResponder()
tf_nome_allievo.resignFirstResponder()
tf_cognome_allievo.resignFirstResponder()
tf_indirizzo_allievo.resignFirstResponder()
tf_numciv_allievo.resignFirstResponder()
tf_cap_allievo.resignFirstResponder()
tf_comune_allievo.resignFirstResponder()
tf_provincia_allievo.resignFirstResponder()
tf_codfisc_allievo.resignFirstResponder()
tf_numcell_allievo.resignFirstResponder()
tf_email_allievo.resignFirstResponder()
}
我已经尝试清空 viewDidLoad 函数,但它仍然无法正常工作。
日志只是停在:
viewDidLoad
viewDidLoad finished
viewWillAppear
viewWillAppear finished
(lldb)
并抛出此异常:
Thread 1: EXC_BAD_ACCESS (code=1, address=0x2a26849f8)
在指着
class AppDelegate: UIResponder, UIApplicationDelegate {
我已经尝试过启用僵尸,但没有运气。内存分析仅在崩溃标志处显示“未知”。
我真的很困惑。有什么提示给我吗?
非常感谢您!
解决方案
我的问题是一个复杂的视图,导致整个应用程序崩溃。如果您遇到类似的事情,请尝试在另一个项目中重建视图,然后一个接一个地删除。:) 感谢@OOPer 的帮助!
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