objective-c用ASIHTTPRequest替換NSMutableURLRequest

Question

我試圖用ASIHTTPRequest替換我的NSMutableURLRequest，我嘗試了下面的內容，但是當我嘗試這個時，我的應用崩潰了。我沒有得到任何錯誤，只是一個警告：

不兼容的指針類型發送「ASIHTTPRequest *」到類型的參數「的NSURLRequest *」

我該如何解決這個問題，我的嘗試下面是我有註釋掉了我的更換：

receivedData = [[NSMutableData alloc]init]; 
//NSURL *JSONURL = [NSURL URLWithString:url]; 

NSURL *url = [NSURL URLWithString:url]; 
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url]; 
[request setUseSessionPersistence:YES]; 
[request setUseKeychainPersistence:NO]; 
[request setUsername:@"username"]; 
[request setPassword:@"password"]; 
[request setDomain:@"domain"]; 
[request startSynchronous]; 

//NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:JSONURL]; 
jobsConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; 
[jobsConnection start]; 

額外的代碼：

-(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data{ 
    [receivedData appendData:data]; 
} 

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error 
{ 

    //NSLog(@"%@" , error); 
    communityDictionary = nil; 
} 

-(void)connectionDidFinishLoading:(NSURLConnection *)connection 
{ 
    NSError *myError; 
    if([connection isEqual:jobsConnection]) 
    { 
     communityDictionary = [[NSDictionary alloc]initWithDictionary: 
           [NSJSONSerialization JSONObjectWithData:receivedData options:kNilOptions error:&myError]]; 
    } 

} 

Answer 1

你真的不想使用這段代碼。

//receivedData = [[NSMutableData alloc]init]; // <-- Not needed 
//NSURL *JSONURL = [NSURL URLWithString:url]; 

NSURL *url = [NSURL URLWithString:url]; 
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:url]; 
[request setUseSessionPersistence:YES]; 
[request setUseKeychainPersistence:NO]; 
[request setUsername:@"username"]; 
[request setPassword:@"password"]; 
[request setDomain:@"domain"]; 
[request startSynchronous]; 

// You are already done getting the request, you just need to handle the response. 
NSError *error = [request error]; 
if (!error) { 
    // Put the response data into your received data object. 
    receivedData = [[request responseData] mutableCopy]; 
    // TODO: copy in the code from -connectionDidFinishLoading: 
} else { 
    NSLog(@"%@", error); 
} 

// There is no need to do anything with NSURLConnection. 
//NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:JSONURL]; 
//jobsConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self]; 
//[jobsConnection start]; 

[request startSynchronous]已經執行的請求，並收到響應，你需要做的一切都得到了ASI對象的響應。注意：-connection:didReceiveResponse:，-connection:didReceiveData:,-connectionDidFinishLoading:將不會回調，在-connectionDidFinishLoading:中完成的任何工作都需要在我上面提到的TODO:部分完成。

---

注：這是錯誤代碼。 -startSynchronous在請求完成之前阻塞線程。這將鎖定您的用戶界面直到響應完成。

• 請勿使用-startSynchronous調查-startAsynchronous。
• 請勿使用ASIHTTPRequest使用AFNetworking。
• 想想更好的方法來重構這個解決方案！

Answer 2

我沒有從iPhone的Xcode項目（https://github.com/pokeb/asi-http-request）的PerformanceTests.m複製一些代碼：

- (void)startASIHTTPRequests 
{ 
    bytesDownloaded = 0; 
    [self setRequestsComplete:0]; 
    [self setTestStartDate:[NSDate date]]; 
    int i; 
    for (i=0; i<10; i++) { 
     ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:testURL]; 
     //Send the same headers as NSURLRequest 
     [request addRequestHeader:@"Pragma" value:@"no-cache"]; 
     [request addRequestHeader:@"Accept" value:@"*/*"]; 
     [request addRequestHeader:@"Accept-Language" value:@"en/us"]; 
     [request setDelegate:self]; 
     [request startAsynchronous]; 
    } 
}  

- (void)requestFailed:(ASIHTTPRequest *)request 
{ 
    GHFail(@"Cannot proceed with ASIHTTPRequest test - a request failed"); 
} 

- (void)requestFinished:(ASIHTTPRequest *)request 
{ 
    bytesDownloaded += [[request responseData] length]; 
    requestsComplete++; 
    if (requestsComplete == 10) { 
     NSLog(@"ASIHTTPRequest: Completed 10 (downloaded %lu bytes) requests in %f seconds",bytesDownloaded,[[NSDate date] timeIntervalSinceDate:[self testStartDate]]); 
    } 
} 

我希望這會幫助你。