Question

我正在拆分字符串：

@"Sam|26|Developer,Hannah|22|Team Leader,Max|1|Dog"

并使用NSMutableDictionary在带有3个标签的TableViewCell中显示。代码：

- (void)viewDidLoad {
    [super viewDidLoad];

NSString *test = @"Sam Parrish|26|Developer,Hannah Rajamets|22|Team Leader,Max Parrish|1|Dog";

testArray = [[NSArray alloc] init];
testArray = [test componentsSeparatedByString:@","];

dict = [NSMutableDictionary dictionary];
    for (NSString *s in testArray) {

        testArrayNew = [s componentsSeparatedByString:@"|"];
        [dict setObject:[testArrayNew objectAtIndex:1] forKey:[testArrayNew objectAtIndex:0]];
        [dict setObject:[testArrayNew objectAtIndex:2] forKey:[testArrayNew objectAtIndex:1]];

        NSLog(@"Dictionary: %@", [dict description]);
    }

[dict retain];

}


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


// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [[dict allKeys] count];
}


// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"CustomCell";

    untitled *cell = (untitled *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier];

    if (cell == nil) {

        NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"untitled" owner:nil options:nil];

        for (id currentObject in topLevelObjects) {
            if ([currentObject isKindOfClass:[UITableViewCell class]]) {
                cell = (untitled *) currentObject;
                break;
            }
        }
    }

    // Configure the cell.
    cell.nameLabel.text = [[dict allKeys] objectAtIndex:[indexPath row]];
    cell.ageLabel.text = [dict objectForKey:cell.nameLabel.text];
    cell.jobLabel.text = [dict objectForKey:cell.ageLabel.text];

    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

    return cell;
}

当我运行时显示6个TableViewCells，其中3个是完美的，另外3个是各种各样的数据。我意识到这与setObject: forKey:有关，但似乎无法找到解决方案以使其正常工作。

任何帮助非常感谢..

SAM

Answer 1

我会将数据存储为持有NSArrays的NSArray ....

- (void)viewDidLoad {
        [super viewDidLoad];

        NSString *test = @"Sam Parrish|26|Developer,Hannah Rajamets|22|Team Leader,Max Parrish|1|Dog";

        data = [[NSMutableArray alloc] init];

        for (NSString *s in testArray) {
            [data addObject:[s componentsSeparatedByString:@"|"]];
        }
}

然后在

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

使用

// Configure the cell.
NSArray *cellData = [data objectAtIndex:indexPath.row];
cell.nameLabel.text = [cellData objectAtIndex:0];
cell.ageLabel.text = [cellData objectAtIndex:1];
cell.jobLabel.text = [cellData objectAtIndex:2];

Answer 2

如果我理解正确的话，你说前三个单元格是正确的，其他三个单元格根本不显示？如果是这样的话，那就是问题：

return [[dict allKeys] count];

不应该......

return [testArray count];

...在这种情况下，您需要保留testArray。

此外，您有内存泄漏。您创建了NSArray的实例，然后通过将componentsSeparatedByString:的返回值分配给同一个变量来立即泄漏它。您是否在代码上运行静态分析器？

NSMutableDictionary和NSArray

2 个答案: