AppDelegate中的NSURLConnection和SBJSon

我在使用ARC和Storyboard（iOS 5）的xCode 4.2中。我想把推文放到我的TableViewController中。当我放置我的NSURLConnection时，一切都很顺利，我已经在代表中的推文（NSArray）中有响应。问题是它不填充表视图。我正在使用SBJson接收数据。我错过了什么吗？AppDelegate中的NSURLConnection和SBJSon

AppDelegate.m

#import "AppDelegate.h" 
#import "TwitterViewController.h" 
#import "SBJson.h" 


@implementation AppDelegate 

@synthesize window = _window; 

@synthesize receivedData; 
@synthesize tableViewController; 
@synthesize tweets; 

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 
{ 
    tweets = [NSMutableArray array]; 
    NSURLRequest *request = [NSURLRequest requestWithURL: 
          [NSURL URLWithString:@"http://search.twitter.com/search.json?q={username}&rpp=5"]]; 
    NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self startImmediately:YES]; 

    if (theConnection) { 
     receivedData = [NSMutableData data]; 
    } 
    return YES; 
} 

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response 
{ 
    [receivedData setLength:0]; 
} 

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

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

    NSLog(@"Connection failed! Error - %@ %@", 
      [error localizedDescription], 
      [[error userInfo] objectForKey:NSURLErrorFailingURLStringErrorKey]); 
} 

- (void)connectionDidFinishLoading:(NSURLConnection *)connection 
{ 
    NSLog(@"Succeeded! Received %d bytes of data",[receivedData length]); 


    NSString *responseString = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding]; 

    NSDictionary *results = [responseString JSONValue]; 

    NSArray *allTweets = [results objectForKey:@"results"]; 

    [tableViewController setTweets:allTweets]; 
} 
@end

这是在我的表视图控制器的委托方法。

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    return [tweets count]; 
} 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *CellIdentifier = @"twitter"; 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    if (cell == nil) { 
     cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; 
    } 

    NSDictionary *aTweet = [tweets objectAtIndex:[indexPath row]]; 



    NSString *textFrom = [aTweet objectForKey:@"text"]; 
    cell.textLabel.text = textFrom; 


    return cell; 
}

我真的需要一些建议。

来源

2012-01-27 ruelluna

表重新加载。天哪！我学会了！

来源

2012-06-29 04:39:12 ruelluna

AppDelegate中的NSURLConnection和SBJSon

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