iPhone development question: Populating table view

Question

I need help, I need to populate a tableview with objects from my array... I may be using some methods from mac code (lol). I just need some help. Here is my header and implementation files, thanks.

#import <UIKit/UIKit.h>

@interface Chuck_FactsViewController : UIViewController {

IBOutlet UITableView *tableView;
NSMutableArray *chuckJokes;
}

- (IBAction)newView:(id)sender;

@end


@implementation Chuck_FactsViewController

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning]; // Releases the view if it doesn't have a superview
// Release anything that's not essential, such as cached data
}

- (void)dealloc {
[super dealloc];
chuckJokes = [[NSMutableArray alloc] init];

 }

 - (id)init {
[super init];
return self;
 }

 -(void)awakeFromNib {
chuckJokes = @"joke 1", @"joke 2", nil;
 }

 - (IBAction)newView:(id)sender {
 }

 - (NSInteger)numberOfSections:(NSInteger)row {
return [chuckJokes count];
 }

 - (id)tableView:(UITableView *)tv row:(int)row {
NSString *v = [chuckJokes objectAtIndex:row];
return v;
 }

 @end

Sorry, I'm an idiot. Some of this may not make sense

Thanks

Answer 1

This line doesn't make any sense at all; perhaps something was lost in the formatting?

chuckJokes = @"joke 1", @"joke 2", nil;

It should be:

chuckJokes = [[NSMutableArray alloc] initWithObjects:@"joke 1", @"joke 2", nil];

(and it would be better in your init method).

Also, you should be releasing chuckJokes in your dealloc, not creating it--all that does is leak an empty array on deallocation--and [super dealloc] should always be the last call in your dealloc. If you aren't familiar with Cocoa programming you might want to read some introductory documentation about the life-cycle of objects.

Beyond that it looks like you should read the iPhone table view guide and then ask specific questions if you have problems after that.

Answer 2

You also miss some DataSource methods:

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


-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"chuck"];
    if (cell == nil) {
     cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"chuck"] autorelease];
    }
    cell.text = [chuckJokes objectAtIndex:[indexPath.row]];

    return cell;
}

And finaly I don't know what's doing method

- (NSInteger)numberOfSections:(NSInteger)row

My assumption is that you're trying to call

- (NSInteger)numberOfSections

but, if you have only one section in table view default value is 1 and you can skip this method.

My advice is: buy and read some good iPhone development books.

Answer 3

- (void)dealloc {
[super dealloc];
chuckJokes = [[NSMutableArray alloc] init];

 }

geee, what is that doing in the 'dealloc' method?