Question

我在一个类中声明了一个NSArray：

.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;
...
}

我可以在这里访问它，然后当我在创建对象后尝试在另一个类中访问它时，我收到错误EXC_BAD_ACCESS并且调试器转到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;
}
}

我认为这可能是一个记忆问题，但我可能完全错了。

Answer 1

这是一个记忆问题

位于someMethod

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

componentsSeparatedByString:返回自动释放的对象
由于您将数组声明为retain属性，因此您应该像这样更新它：

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

NSArray导致EXC_BAD_ACCESS

1 个答案: