的NSArray导致EXC_BAD_ACCESS

Question

我声明一个NSArray在一类这样的：

.h

@interface HTTP : NSObject { 
NSArray *listOfProfiles; 
} 
@property (nonatomic, retain) NSArray *listOfProfiles; 

.m

-(id) init { 
if ((self = [super init])) { 
    listOfProfiles = [[NSArray alloc] init]; 
} 
return self; 
} 

-(void) someMethod { 
... 
    case GET_LIST_OF_PROFILES: 
     listOfProfiles = [result componentsSeparatedByString:@"^-^"]; 
     NSLog(@"first break: %@",[listOfProfiles objectAtIndex:0]); 
     break; 
... 
} 

我可以访问它在这里就好了，然后当我尝试访问它在创建对象后的另一个类中收到错误EXC_BAD_ACCESS并且调试程序转到main.m：

- (void)viewDidAppear:(BOOL)animated 
{ 
[super viewDidAppear:animated]; 
http = [[HTTP alloc] init]; 
[http createProfileArray]; 
profileListDelay = [[NSTimer alloc] init]; 
profileListDelay = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector(profileListSelector) userInfo:nil repeats:YES]; 

} 

- (void) profileListSelector 
{ 
if (http.activityDone) 
{ 
    // http.listofprofiles mem leak? 
    for (int i = 0; i < http.listOfProfiles.count; i++) 
    { 
     NSLog(@"%@",[http.listOfProfiles objectAtIndex:i]); 
    } 
    [profileListDelay invalidate]; 
    profileListDelay = nil; 
} 
} 

我在想这可能是一个记忆问题，但我可能是完全错误的。

Answer 1

这是内存问题

正是在someMethod

-(void) someMethod { 
... 
    case GET_LIST_OF_PROFILES: 
     listOfProfiles = [result componentsSeparatedByString:@"^-^"]; 
     NSLog(@"first break: %@",[listOfProfiles objectAtIndex:0]); 
     break; 
... 
} 

componentsSeparatedByString:返回一个自动释放的对象
既然你声明的数组作为retain属性，你应该更新它像这样：

self.listOfProfiles = [result componentsSeparatedByString:@"^-^"];