NSString problème hors de portée?

Question

Je tire vraiment mes cheveux, ce doit être un problème simple, mais je ne peux tout simplement pas le voir.

J'essaye juste d'assigner une valeur à une variable d'un champ de texte.

Dans mon fichier h J'ai

NSString *currentPass; 
@property (nonatomic, retain) NSString *currentPass; 

Mon fichier m.

@synthesize currentPass; 
- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:  
    (NSInteger)buttonIndex{ 

if (alertView.tag == AlertPasswordAsk) { 
    UITextField* theTextField = ((UITextField*)[alertView viewWithTag: 5]); 
    currentPass = [NSString stringWithFormat:@"%@", theTextField.text]; 
    if ([theTextField isEditing]) { 
     [theTextField resignFirstResponder]; 
    } 
} 
} 

- (void)alertView:(UIAlertView *)alertView 
    didDismissWithButtonIndex:(NSInteger)buttonIndex{ 

    NSLog(@"didDismissWithButtonIndex tag=%i", alertView.tag); 
if (alertView.tag == AlertPasswordAsk) { 
    if(buttonIndex == 1){ 
     NSUserDefaults *myDefaults = [NSUserDefaults standardUserDefaults]; 
     NSString *strPassword = [NSString alloc]; 
     strPassword = [myDefaults stringForKey:@"pass"]; 

      // ######### ERROR OCCURS HERE ######### 
     NSLog(@"currentPass=%@ strPassword=%@", currentPass, strPassword); 

     if (![currentPass isEqualToString:strPassword]) { 

[6337:207] didDismissWithButtonIndex tag=10 
Current language: auto; currently objective-c 
(gdb) continue 
Program received signal: “EXC_BAD_ACCESS”. 
(gdb) bt 
#0 0x02894903 in objc_msgSend() 
#1 0x00000000 in ??() 

Answer 1

Vous devez conserver l'objet que vous attribuez à currentPass:

self.currentPass = [NSString stringWithFormat:@"%@", theTextField.text]; 

Answer 2

- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:  
    (NSInteger)buttonIndex{ 

if (alertView.tag == AlertPasswordAsk) { 
    UITextField* theTextField = ((UITextField*)[alertView viewWithTag: 5]); 
//assigning to member variable will not retain your object. 
// current address is just pointing to auto released object not retaining it. 
// currentPass = [NSString stringWithFormat:@"%@", theTextField.text]; 

// use currentPass as with accessor: 
self.currentPass = [NSString stringWithFormat:@"%@", theTextField.text]; 
    if ([theTextField isEditing]) { 
     [theTextField resignFirstResponder]; 
    } 
} 
}