ios - 从^ block访问@property

尝试对在StreamScreen UIViewController类中声明的@property进行更改时，出现（lldb）错误。

我正在尝试更改asyncRequest成功块中的feedList对象。 asyncRequest方法是我导入的类方法，是我的类的一部分，称为NSURLConnection-block。

所以...

我正在尝试更改NSMutableArray（feedList），它是StreamScreen在StreamScreen中的一个块内的一部分，并且该块由另一个类的类方法（asyncRequest）调用，但出现错误。

在调试导航器中，我得到-error: address doesn't contain a section that points to a section in a object file

这是我的一些代码...

这是我在其中声明feedList @property（StreamScreen.h）的地方

@property (strong, nonatomic) NSMutableArray *feedList;

下面的代码是（StreamScreen.m）中的getStream方法和asyncRequest类方法

- (void)getStream {
    NSString *fbAccessToken = [[[FBSession activeSession] accessTokenData] accessToken];
    NSString *urlString = [NSString stringWithFormat: @"http://198.199.71.169/getFB.php?at=%@", fbAccessToken];
    NSURL *url = [[NSURL alloc] initWithString:urlString];
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
    [NSURLConnection asyncRequest:request
                          success:^(NSData *data, NSURLResponse *response) {
                              NSLog(@"%@", feedList);
                          }
                          failure:^(NSData *data, NSError *error) {
                              NSLog(@"Error! %@",[error localizedDescription]);
                          }];
}

我实例化feedList NSMutableArray并在我的viewDidLoad方法中调用getStream方法

- (void)viewDidLoad
{
    [super viewDidLoad];
    feedList = [[NSMutableArray alloc] initWithObjects:@"zero", @"one", @"two", nil];
    [self getStream];
}

编辑：

这是NSURLConnection-block.m

#import "NSURLConnection-block.h"

@implementation NSURLConnection (block)

#pragma mark API
+ (void)asyncRequest:(NSURLRequest *)request success:(void(^)(NSData *,NSURLResponse *))successBlock_ failure:(void(^)(NSData *,NSError *))failureBlock_
{
    [NSThread detachNewThreadSelector:@selector(backgroundSync:) toTarget:[NSURLConnection class]
                           withObject:[NSDictionary dictionaryWithObjectsAndKeys:
                                       request,@"request",
                                       successBlock_,@"success",
                                       failureBlock_,@"failure",
                                       nil]];
}

#pragma mark Private
+ (void)backgroundSync:(NSDictionary *)dictionary
{
    //NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
    void(^success)(NSData *,NSURLResponse *) = [dictionary objectForKey:@"success"];
    void(^failure)(NSData *,NSError *) = [dictionary objectForKey:@"failure"];
    NSURLRequest *request = [dictionary objectForKey:@"request"];
    NSURLResponse *response = nil;
    NSError *error = nil;
    NSData *data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
    if(error)
    {
        failure(data,error);
    }
    else
    {
        success(data,response);
    }
    //[pool release];
}


@end

这是NSURLConnection-block.h

#import <Foundation/Foundation.h>

@interface NSURLConnection (block)
#pragma mark Class API Extensions
+ (void)asyncRequest:(NSURLRequest *)request success:(void(^)(NSData *,NSURLResponse *))successBlock_ failure:(void(^)(NSData *,NSError *))failureBlock_;
@end

我希望有一个人可以帮助我。我真的很感激！ :)

最佳答案

您是自己将feedList合成为feedList ivar吗？否则，请尝试使用_feedList，这是默认的综合变量。

关于ios - 从^ block访问@property，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/15978765/