Question

Github：https://github.com/nneeranjun/Maps.git

我有一个CoordinatesCustomCell（TableViewCell），它包含三个标签（我在CoordinatesCustomCell.h文件中链接了所有属性）。当我在TableViewController中使用重用标识符创建单元格并尝试更改标签文本时，在运行应用程序时它们似乎不会被更改。请使用上面的github链接查看我的代码。

DataTableViewController：

#import "DataTableViewController.h"
#import "CoordinatesCustomCell.h"
@import Firebase;
FIRDatabaseQuery*data;


@implementation DataTableViewController

- (void)viewDidLoad {
[super viewDidLoad];
// Uncomment the following line to preserve selection between presentations.
// self.clearsSelectionOnViewWillAppear = NO;

// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem;
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

#pragma mark - Table view data source

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

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection: (NSInteger)section {
return 2;
 }


 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
 CoordinatesCustomCell *cell = [tableView  dequeueReusableCellWithIdentifier:@"CoordinatesCustomCell" forIndexPath:indexPath];
 cell.latitude.text = @"Hello";
 cell.longitude.text = @"Hello";

 // Configure the cell...

 return cell;
 }


 @end

CoordinatesCustomCell.h：

#import <UIKit/UIKit.h>

@interface CoordinatesCustomCell : UITableViewCell
@property (weak, nonatomic) IBOutlet UILabel *index;
@property (weak, nonatomic) IBOutlet UILabel *latitude;
@property (weak, nonatomic) IBOutlet UILabel *longitude;

@end

Answer 1

您需要在viewDidLoad方法中为您的单元格调用第一个regiterNib或registerClass

[self.tableView registerClass:[CoordinatesCustomCell class] forCellReuseIdentifier:@"CoordinatesCustomCell"];

或

[self.tableView registerNib:[UINib nibWithNibName:@"CoordinatesCustomCell" bundle:nil] forCellReuseIdentifier:@"CoordinatesCustomCell"];

如果您使用.xib或storyboard作为原型单元格别忘了设置

self.tableView.delegate = self;
self.tableView.datasource = self;

我的自定义表视图不会显示数据

1 个答案: