Question

我的问题是如何将字符串传递给另一个视图标签？我尝试了很多例子，但仍然无法获得我通过的价值。

这是我保存数据。

-(IBAction)Save:(id)sender{
    timedata = [datePicker date];
    NSLog(@"timedata save is = %@",timedata);

    time = [NSString stringWithFormat:@"%@",timedata];

    NSLog(@"String time = %@",time);

    [self dismissModalViewControllerAnimated:YES];
}

这里是我要显示保存数据。

- (void) viewWillAppear:(BOOL)animated {

    show = [[SelectDate alloc]initWithNibName:@"SelectDate" bundle:nil];
    show.time = time;
    NSLog(@"time = %@",time);

    Selectime.text = show.time;
    NSLog(@"show.time = %@",show.time);     

    [super viewWillAppear:animated];
}

Answer 1

如果您在SelectDate viewController中设置了time属性，以便可以在其他viewControllers中访问它。

// SelectDate.h

NSString *time;  
// Your declarations  
@property(nonatomic,retain) NSString *time;

// SelectDate.m

@synthesize time;

现在，您可以在其他ViewControllers中使用时间，就像您正在做的那样。

Answer 2

要获取日期的NSString表示，您应该查看NSDateFormatter

示例：

NSDate* timedata = [datePicker date];   
NSDateFormatter* dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"dd/MM/yyyy"];
NSString *time = [dateFormat timedata];
[dateFormat release];

Answer 3

不是访问上一个视图，而是将数据传递到下一个视图：

嗨，我的问题是如何将字符串传递给另一个视图标签？我尝试了很多例子，但仍然无法获得我通过的价值。

这是我保存数据。

-(IBAction)Save:(id)sender{
    timedata = [datePicker date];
    NSLog(@"timedata save is = %@",timedata);
    time = [NSString stringWithFormat:@"%@",timedata];
    NSLog(@"String time = %@",time);
    [self dismissModalViewControllerAnimated:YES];

    YourNextView *yourNextView=[[YourNextView alloc] init];
    yourNextView.anString=[NSString stringWithFormat:@"%@",timedata];
    [yourNextView release];
}

这里是您要显示保存数据。

- (void) viewWillAppear:(BOOL)animated {

    //show = [[SelectDate alloc]initWithNibName:@"SelectDate" bundle:nil];
    //show.time = time;
    //NSLog(@"time = %@",time);
    Selectime.text = self.anString;
    NSLog(@"show.time = %@",show.time); 
    [super viewWillAppear:animated];
}

iphone如何将字符串传递给另一个视图标签？

3 个答案: