我从 AFnetworking 切换到 RestKit。在 AFnetworking 中有一个 API 类。API.h 类包含以下内容。
#import <UIKit/UIKit.h>
typedef void (^JSONResponseBlock)(NSDictionary* json);
@interface API : NSObject
//the authorized user
@property (strong, nonatomic) NSDictionary* user;
+(API*)sharedInstance;
//check whether there's an authorized user
//send an API command to the server
-(void)loginCommand:(NSMutableDictionary*)params onCompletion:(JSONResponseBlock)completionBlock;
我的 API.m 类看起来像这样。
+(API *)sharedInstance
{
static API *sharedInstance = nil;
static dispatch_once_t oncePredicate;
dispatch_once(&oncePredicate, ^ {
sharedInstance = [[self alloc]initWithBaseURL:[NSURL URLWithString:kAPIHost]];
});
return sharedInstance;
}
#pragma mark - init
//intialize the API class with the destination host name
-(API *)init
{
//call super init
self = [super init];
if (self != nil){
//initialize the object
user = nil;
[self registerHTTPOperationClass:[AFJSONRequestOperation class]];
// Accept HTTP Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.1
[self setDefaultHeader:@"Accept" value:@"application/json"];
}
return self;
}
-(void)loginCommand:(NSMutableDictionary *)params onCompletion:(JSONResponseBlock)completionBlock{
NSLog(@"%@%@",kAPIHost,kAPILogin);
NSMutableURLRequest *apiRequest = [self multipartFormRequestWithMethod:@"POST" path:kAPILogin parameters:params constructingBodyWithBlock:^(id <AFMultipartFormData>formData){
//TODO: attach file if needed
}];
AFJSONRequestOperation *operation = [[AFJSONRequestOperation alloc] initWithRequest:apiRequest];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject){
//success!
NSLog(@"SUCCESSSS!");
completionBlock(responseObject);
}failure:^(AFHTTPRequestOperation *operation, NSError *error){
//Failure
NSLog(@"FAILUREE!");
completionBlock([NSDictionary dictionaryWithObject:[error localizedDescription] forKey:@"error"]);
}];
[operation start];
}
就像你看到的那样,我只实例化一次,然后把我所有的方法都放在这里。在我的视图控制器中,我只需要使用参数字典调用此方法。然后我可以读取整个 JSON 文件。
现在使用 restKit,我在 viewController 级别上完成了这一切。我想像 AFNetworking 那样拆分它。这就是我在 RestKit 中所做的,目前这一切都在 viewController 级别。
//let AFNetworking manage the activity indicator
[AFNetworkActivityIndicatorManager sharedManager].enabled = YES;
// Initialize HTTPClient
NSURL *baseURL = [NSURL URLWithString:@"http://virtuele-receptie.preview.sanmax.be"];
AFHTTPClient* client = [[AFHTTPClient alloc] initWithBaseURL:baseURL];
//we want to work with JSON-Data
[client setDefaultHeader:@"Accept" value:RKMIMETypeJSON];
// Initialize RestKit
RKObjectManager *objectManager = [[RKObjectManager alloc] initWithHTTPClient:client];
//Do mapping
RKResponseDescriptor *responseDescriptor = [RKResponseDescriptor responseDescriptorWithMapping:dataMapping
pathPattern:nil
keyPath:@"data"
statusCodes:[NSIndexSet indexSetWithIndex:200]];
[objectManager addResponseDescriptor:responseDescriptor];
NSDictionary *dict = [[NSDictionary alloc]initWithObjectsAndKeys:_txtLogin.text,@"email",_txtPass.text,@"pwd", nil];
[objectManager getObject:nil path:@"/nl/webservice/company-user/login/apikey/key12345678" parameters:dict
success:^(RKObjectRequestOperation *operation, RKMappingResult *mappingResult) {
//Success
}
failure:^(RKObjectRequestOperation *operation, NSError *error) {
//Failure
}];