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我在我的项目中的各个类中有几个方法，分别是methodA（），methodB（），methodC（）... methodZ（）。每种方法都使用NSOperation执行网络调用。有些情况下我必须并行执行方法，如方法A，D，M应该并行执行。在另一种情况下说，方法D，S，T应该并行执行。我在APIManager类中维护一个执行我所有方法的常用方法。并行执行多个NSOperation
我试着在APIManager类中创建一个操作队列，但它不工作。只有方法执行完成后，才会执行另一个方法执行。任何人都可以在这方面建议？
-(void) methodA {
NSString *path = [NSString stringWithFormat:kPath, @“Function1”];
NSString *requestXML = [NSString stringWithFormat:kGetFunction1RequestXML];
self.operation = [self.apiMgr requestWithPath:path method:@"POST" xml:requestXML headers:@{@"Accept": @"application/xml", @"Content-Type": @"application/xml"}
success:^(id response) {
NSLog(@“Request successful. Do further handling”);
}
failure:^(NSError *error) {
NSLog(@“failed”);
}];
}
- （无效）的methodB {
NSString *path = [NSString stringWithFormat:kPath, @“Function2”];
NSString *requestXML = [NSString stringWithFormat:kGetFunction2RequestXML];
self.operation = [self.apiMgr requestWithPath:path method:@"POST" xml:requestXML headers:@{@"Accept": @"application/xml", @"Content-Type": @"application/xml"}
success:^(id response) {
NSLog(@“Request successful. Do further handling”);
}
failure:^(NSError *error) {
NSLog(@“failed”);
}];
}
- (id)requestWithPath:(NSString *)path method:(NSString *)method xml:(NSString *)requestXML headers:(NSDictionary *)headers success:(void(^)(id response))success failure:(void(^)(NSError *error))failure
{
NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@“%@, self.serverAddress]];
AFHTTPClient *client = [AFHTTPClient clientWithBaseURL:url];
if (headers) {
for (NSString *header in headers) {
[client setDefaultHeader:header value:headers[header]];
}
}
[client setParameterEncoding:AFJSONParameterEncoding];
NSMutableURLRequest *request = nil;
request = [client requestWithMethod:method path:path parameters:nil];
[request setHTTPBody:[requestXML dataUsingEncoding:NSUTF8StringEncoding]];
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
[self.operationQueue addOperation:operation];
[operation setAuthenticationAgainstProtectionSpaceBlock:^BOOL(NSURLConnection *connection, NSURLProtectionSpace *protectionSpace)
{
return YES;
}];
[operation setAuthenticationChallengeBlock:^(NSURLConnection *connection, NSURLAuthenticationChallenge *challenge)
{
[challenge.sender useCredential:[NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust] forAuthenticationChallenge:challenge];
[challenge.sender continueWithoutCredentialForAuthenticationChallenge:challenge];
}];
[operation setShouldExecuteAsBackgroundTaskWithExpirationHandler:^{
LogVerbose(@"Background time expired for AFNetworking...");
}];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
NSString *xmlStr = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
NSDictionary *xmlDic = [NSDictionary dictionaryWithXMLString:xmlStr];
if (success)
success(xmlDic);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
if (failure) {
failure(error);
}
}];
return nil;
}
尝试在NSOperationQueue实例上将maxConcurrentOperationCount设置为大于1的数字。如果未解决，系统应该决定它可以一次处理多少个操作。 – Greg
@Greg，也试过这样做。尽管如此，这些行动还是一个又一个的发生。 –
这个家伙已经很好地解释了NSOperation，请通过这个：https：//izeeshan.wordpress.com/2014/08/17/multi-threading-using-nsoperation/ – manish