在我的项目中,我试图计算所选的行数,然后当我按下按钮时,它会转到上一个视图,该视图中的按钮文本应该更改为选择了多少行。我意识到我必须犯一个简单的错误,但无法弄清楚。我将不胜感激。
以下是我在.m文件中使用的代码:
- (IBAction)doneButton:(id)sender
{
appDelegate = (AppDelegate*) [[UIApplication sharedApplication] delegate];
CountryModel *countryModel = [[CountryModel alloc]init];
CompareViewController *compareViewController = [[CompareViewController alloc]init];
[compareViewController. addCountries setTitle:[NSString stringWithFormat:@"%ld Countries Selected", countId] forState:(UIControlState)UIControlStateNormal];
NSLog(@"%ld",countId);
// compareViewController.addCountries.titleLabel.text = [NSString stringWithFormat:@"%ld Countries Selected", countId];
compareViewController.Cid = countryModel.Id;
[self.navigationController pushViewController:compareViewController animated:YES];
}
这是CompareViewController的.h代码:
@interface CompareViewController : UIViewController
@property (assign) NSInteger Cid;
- (IBAction)addRemoveCountries:(id)sender;
@property (weak, nonatomic) IBOutlet UIButton *addCountries;
答案 0 :(得分:1)
表单代码我看到你是在初始化视图之前设置标题。您应该做的是为CompareViewController
添加一个属性,将其设置为操作。并在viewDidLoad:
CompareViewController
方法中将此标题设置为您的按钮。
修改强>
在您的CompareViewController.h中添加一个属性:
@property (nonatomic, strong) NSString *buttonTitleyouNeedToSet;
在初始化doneButton:
compareViewController
添加以下内容
compareViewController.buttonTitleyouNeedToSet = [NSString stringWithFormat:@"%ld Countries Selected", countId];
在viewDidLoad:
的CompareViewController.m中设置按钮标题:
[addCountries setTitle:buttonTitleyouNeedToSet forState:(UIControlState)UIControlStateNormal];
答案 1 :(得分:0)
这样做
finally block
希望这会有所帮助