Question

我正在创建一个名为S3ObjectController（S3OC）的类的实例，它有一个方法和四个委托方法。我创建了一个S3OC实例，从S3OC类调用一个实例方法（我知道从NSLog语句中触发）但是在S3OC类中没有调用任何关联的委托方法。我在方法中将委托设置为self，并在.h标头中正确声明委托。

思考？为了清楚起见，它是下面.m文件中的（void）请求方法，我认为应该调用它不是。我收到了EXC BAD ACCESS错误。 ARC自我释放了吗？

S3OC类的整个.m文件如下：

#import "S3ObjectController.h"

@implementation S3ObjectController
@synthesize string;
@synthesize s3GOR, s3Client;

-(void)method
{
    NSLog(@"Method Called");
    s3Client = [[AmazonS3Client alloc] initWithAccessKey:ACCESS_KEY_ID withSecretKey:SECRET_KEY];
    s3GOR = [[S3GetObjectRequest alloc]initWithKey:string withBucket:[Constants pictureBucket]];
    [s3GOR setDelegate:self];
    [s3Client getObject:s3GOR];
    NSLog(@"Method Finished");
}

-(void)request:(AmazonServiceRequest *)request didFailWithError:(NSError *)error
{
    NSLog(@"Error %@",error);
}

-(void)request:(AmazonServiceRequest *)request didReceiveResponse:(NSURLResponse *)response 
{
    NSLog(@"Response Key %@", response);
}

-(void)request:(AmazonServiceRequest *)request didReceiveData:(NSData *)data
{
    NSLog(@"ObjectRequestKey = %@",request);
}

-(void)request:(AmazonServiceRequest *)request didCompleteWithResponse:(AmazonServiceResponse *)response
{
    NSLog(@"Final Delegate Method");
}

这是标题：“

@interface S3ObjectController : NSObject <AmazonServiceRequestDelegate>{
    NSMutableData *responseData;
    NSString *string;

    AmazonS3Client *s3Client;
    S3GetObjectRequest *s3GOR;
}

-(void)method;

@property (nonatomic, strong)  NSString *string;
@property (nonatomic, strong) S3GetObjectRequest *s3GOR;
@property (nonatomic, strong) AmazonS3Client *s3Client;

@end

最后，这是我在另一个类中调用该方法的方法：

for (NSString *name in nameArray){
        @try {
            S3ObjectController *localS3 = [[S3ObjectController alloc]init];
            localS3.string = name;
            [localS3 method];
            NSLog(@"called");
}

Answer 1

我认为你对ARC的怀疑是真的。因为委托属性通常是弱引用，所以它们不足以阻止对象被释放。

创建一个iVar的NSArray并将S3ObjectController添加到它。如果代表们仍然不开火，你知道这是另一回事......

编辑：

所以在包含for循环的类的标题中声明一个NSMutableArray，在这样的地方初始化它：

myArray = [NSMutableArray arrayWithCapacity:0];

然后像这样使用它：

for (NSString *name in nameArray){
@try {
        S3ObjectController *localS3 = [[S3ObjectController alloc]init];
        localS3.string = name;
        [localS3 method];
        [myArray addObject:localS3];
        NSLog(@"called");
     }
}

委托方法未在类实例中调用

1 个答案: