Retrieve parameter from didReceiveRemoteNotification,load json data into tableview

[soonw29]

Hi all,

I am a newbie to iOS development. I am developing an iPad app to receive push notifications from the server and pass a parameter taken from the push notification payload to access json data hosted by my server. Afterwhich, display the information grabbed into a tableView. Currently i am able to retrieve the information from the json file but i am facing difficulties in loading the data into the tableview. Kindly read through my code and assist me. THanks.

Appdelegate.m

-(void)application: (UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo{
    for (id key in userInfo){
        NSLog(@"key: %@,value: %@", key, [userInfo objectForKey:key]);
    }
    NSLog(@"Parameter is %@",[userInfo objectForKey:@"acme"]);
    
    param = [userInfo objectForKey:@"acme"]; 
    
    NSString *urlString = [NSString stringWithFormat:@"http://api.kivaws.org/v1/loans/%@",param];
    
    NSLog(@"Url is %@",urlString);
    // Create NSURL string from urlString
    NSURL *url = [NSURL URLWithString:urlString];
    
    // Setup and start async download
    request = [[NSURLRequest alloc] initWithURL:url];
    theConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
    if (theConnection) {
        // Create the NSMutableData to hold the received data.
        receivedData = [[NSMutableData data] retain];
    } else {
        // Inform the user that the connection failed.
    }
    [request release];
    
    
    
    //NSString *urlString = (@"http://192.168.20.4:8180/RfWms/json/%@",[userInfo valueForKey:@"acme"]);
    
    //AppDelegate *appdelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
    
       
    //[[NSNotificationCenter defaultCenter]postNotificationName:@"updateRoot" object:nil];
    // Do any additional setup after loading the view, typically from a nib.
}


- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    // This method is called when the server has determined that it
    // has enough information to create the NSURLResponse.
    
    // It can be called multiple times, for example in the case of a
    // redirect, so each time we reset the data.
    AppDelegate *appdelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
    [appdelegate.receivedData setLength:0];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    // Append the new data to receivedData.
    AppDelegate *appdelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
    
    [appdelegate.receivedData appendData:data];
}

- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
    // release the connection, and the data object
    //[connection release];
    //[receivedData release];
    
    // inform the user
    // NSLog(@"Connection failed! Error - %@ %@",
    //[error localizedDescription],
    //[[error userInfo] objectForKey:NSErrorFailingURLStringKey]);
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    //AppDelegate *appdelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
    NSLog(@"Succeeded! Received %d bytes of data",[receivedData length]);
    
    // Store incoming data into a string
    NSString *jsonString = [[NSString alloc] initWithData:receivedData encoding:NSUTF8StringEncoding];
    
    // Create a dictionary from JSON string
    faculties = [[jsonString JSONValue]objectForKey:@"loans"];
    
    NSLog(@"faculties is %@",faculties);
    // NSArray* latestLoans = [(NSDictionary*)[responseString JSONValue] objectForKey:@"loans"];
    
    [jsonString release];
    
    // release the connection, and the data object
    [connection release];
    [receivedData release];
    
    
    //[viewController tableView:<#(UITableView *)#> numberOfRowsInSection:<#(NSInteger)#>];
    
    [viewController.theTableView reloadData];
    
}

//-(void)updateView:(NSNotification *)notification{
//  [theTableView reloadData];
//}


    
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    
    
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];
    


    NSLog(@"Registering for push notifications...");
    [[UIApplication sharedApplication] registerForRemoteNotificationTypes:(UIRemoteNotificationTypeAlert | UIRemoteNotificationTypeBadge | UIRemoteNotificationTypeSound)];
        
    return YES;
   
}

Viewcontroller.m

- (void)viewDidLoad
{
    [super viewDidLoad];
         
}

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    AppDelegate *appdelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
    return [appdelegate.faculties count];
    
}


// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    
    static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
    }
    
    // Configure the cell.
    AppDelegate *appdelegate = (AppDelegate *)[[UIApplication sharedApplication]delegate];
    NSDictionary *faculty = [appdelegate.faculties objectAtIndex:[indexPath row]];
    //NSLog(@"faculty is",faculty);
    [[cell textLabel] setText:[faculty objectForKey:@"name"]];
    NSString *image = [faculty objectForKey:@"image"];
    //NSLog(@"Image is %@",image);
    
    
    
    NSData *imageData = [[NSData alloc] initWithContentsOfURL:[NSURL URLWithString:image]];
    UIImage *theImage = [[UIImage alloc]initWithData:imageData];
    cell.imageView.image = theImage;
    
    [theImage release];
    [imageData release];
    
    
    return cell;
}