Can't set textlabel cell

Here is my code

@property (nonatomic,retain) NSMutableArray *category;

@synthesize category;

NSString * path = [[NSBundle mainBundle] pathForResource:@"categorylist" ofType:开发者_运维技巧@"txt"];
    NSString * content = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:NULL];
    self.category = [NSMutableArray arrayWithArray:[content componentsSeparatedByString:@"\n"]];
    [content release];

and It has error here

cell.textLabel.text = [category objectAtIndex:[indexPath row]];
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    return cell;

I'm newbie. so Please help me find out the solution please.

v v v From many help This is finalize solution code.

@property (nonatomic,retain) NSMutableArray *category;

@synthesize category;

NSString * path = [[NSBundle mainBundle] pathForResource:@"categorylist" ofType:@"txt"];
    NSString * content = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:NULL];
    self.category = [NSMutableArray arrayWithArray:[content componentsSeparatedByString:@"\n"]];

and here

cell.textLabel.text = [NSString stringWithFormat:@"%@",[self.category objectAtIndex:indexPath.row]];

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don't release content. If you didn't use alloc, new, retain or copy you are not allowed to release.

You should read the Memory Management Programming Guide again

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From your code everything is correct ..may be bug behind the following thing

1.Check your category array wethere it contain value by printing

NSLog(@"%@", category);

2.Did u inform ur array count to numberOfRowsInSection function

3.Did u release category array's memory in dealloc

4.Did U set datasource for tableview???

Best Regards