Reloading a table view after NSURLConnection succeeds - objective-c

Question

I'm new to Xcode, so bear with me:
I have a table view that I'm trying to reload once the NSURLConnection succeeds. I have a number of messages that help me guide me along the way... but when I call the reload upon the table view, the table doesn't repopulate.
JsonViewController.h:
#import <UIKit/UIKit.h>
#interface JsonViewController : UITableViewController {
NSMutableArray *theTweets;
IBOutlet UITableView *tview;
NSMutableData *responseData;
}
#property (nonatomic, retain) NSMutableArray *theTweets;
#property (nonatomic, retain) UITableView *tview;
#end
JsonViewController.m:
#import "JsonViewController.h"
#import "SBJson.h"
#implementation JsonViewController
#synthesize theTweets;
#synthesize tview;
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (void) dealloc {
[theTweets release];
[super dealloc];
}
- (NSMutableArray*)theTweets {
return [[theTweets retain] autorelease];
}
- (void) setTheTweets:(NSMutableArray *)newTweets {
if (newTweets != theTweets) {
[newTweets retain];
[theTweets release];
theTweets = newTweets;
NSLog(#"Setting new tweets...");
[tview reloadData];
}
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
[super viewDidLoad];
tview.delegate = self;
responseData = [[NSMutableData data] retain];
theTweets = [NSMutableArray array];
NSURLRequest *request = [NSURLRequest requestWithURL:
[NSURL URLWithString:#"http://search.twitter.com/search.json?q=AriaPoker&result_type=recent"]];
[[NSURLConnection alloc] initWithRequest: request delegate:self];
NSLog(#"Trying to get feed upon initialization");
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
// methods that are not important
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
NSLog(#"Number of the tweets count at this point: %d", [theTweets count]);
return [theTweets count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
NSLog(#"Number of the tweets count at this point: %d", [theTweets count]);
// Configure the cell...
NSDictionary *aTweet = [theTweets objectAtIndex:[indexPath row]];
//cell.textLabel.text = [aTweet objectForKey:#"text"];
cell.textLabel.adjustsFontSizeToFitWidth = YES;
cell.textLabel.font = [UIFont systemFontOfSize:12];
cell.textLabel.numberOfLines = 4;
cell.textLabel.lineBreakMode = UILineBreakModeWordWrap;
cell.textLabel.text = #"Test";
cell.detailTextLabel.text = #"haha";
//NSURL *url = [NSURL URLWithString:[aTweet objectForKey:#"profile_image_url"]];
//NSData *data = [NSData dataWithContentsOfURL:url];
//cell.imageView.image = [UIImage imageWithData:data];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
NSLog(#"Loading cells in table");
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// Navigation logic may go here. Create and push another view controller.
}
#pragma mark NSURLConnection Delegate Methods
- (void) connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
[responseData setLength:0];
}
- (void) connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[responseData appendData:data];
}
- (void) connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
//do nothing
NSLog(#"A connection error has occurred!");
}
- (void) connectionDidFinishLoading:(NSURLConnection *)connection {
[connection release];
NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
[responseData release];
NSDictionary *results = [[responseString JSONValue] retain];
NSLog(#"Number of Rows: %d", [results count]);
NSMutableArray *allTweets = [results objectForKey:#"results"];
//[viewController setTweets:allTweets];
theTweets = allTweets;
NSLog(#"Number of misc2: %d", [theTweets count]);
[results release];
[tview reloadData];
}
#end
I'm wondering what I'm doing wrong here.

Answer 1

In connectionDidFinishLoading change from this:
theTweets = allTweets;
to this:
self.theTweets = allTweets;
or this way if you prefer:
[self setTheTweets:allTweets];
You weren't invoking the setter method, so it wasn't getting retained.

Answer 2

As suggested by progrmr try to call the setter method, or simply change definition of theTweets property to #dynamic theTweets in this case when you try to set property, the custom setter method will be called.