小编Oli*_*ite的帖子

CSURLCache旨在缓存资源以进行脱机浏览,因为NSURLCache只将数据存储在内存中.

如果cachedResponse在返回应用程序崩溃之前自动释放,如果没有,则只是泄漏对象.

任何可以照到这上面的光都会非常感激.

请注意stringByEncodingURLEntities是一种类别方法NSString.

@interface CSURLCache : NSURLCache {} @end

@implementation CSURLCache

- (NSCachedURLResponse *)cachedResponseForRequest:(NSURLRequest *)request
{
    NSString *path = [[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) lastObject] stringByAppendingPathComponent:[[[request URL] absoluteString] stringByEncodingURLEntities]];

    if ([[NSFileManager defaultManager] fileExistsAtPath:path])
    {
        NSData *data = [[NSData alloc] initWithContentsOfFile:path];
        NSURLResponse *response = [[NSURLResponse alloc] initWithURL:[request URL]
                                                            MIMEType:nil
                                               expectedContentLength:[data length]
                                                    textEncodingName:nil];

        NSCachedURLResponse *cachedResponse = [[NSCachedURLResponse alloc] initWithResponse:response
                                                                                       data:data];
        [response release];
        [data release];

        return cachedResponse;
    }

    return nil;
}

@end

更新:向Apple提交雷达后,似乎这是一个已知问题(雷达#7640470).

[self.managedObjectContext deleteObject:self];

从概念上讲,执行这行代码是否存在问题？