如何按鈕標籤傳遞給prepareForSegue

在Xcode中（iPhone應用程序），我創建了一個數字按鈕的編程方式是這樣的：如何按鈕標籤傳遞給prepareForSegue

- (void)viewDidLoad 
{ 
    [super viewDidLoad]; 

    // By Road Button 
    byRoadButton = [UIButton buttonWithType:UIButtonTypeCustom]; 
    byRoadButton.tag = 3; 
    byRoadButton.frame = CGRectMake(20, 246, 280.f, 40.f); 
    UIImage *roadButton = [UIImage imageNamed:@"gettingHereByRoadButton.png"]; 
    [byRoadButton setBackgroundImage:roadButton forState:UIControlStateNormal]; 
    [self.view addSubview:byRoadButton]; 
    [byRoadButton addTarget:self action:@selector(byRoadButtonClicked) forControlEvents:UIControlEventTouchUpInside]; 
}

然後我檢查哪個按鈕被按下的行動：@選擇，並呼籲performSegueWithIdentifier 。 NSLog在這裏顯示正確的按鈕標籤作爲檢查。

- (void) byRoadButtonClicked 
{ 
    NSLog(@"Button Pushed Tag Number: %d", byRoadButton.tag); 
    [self performSegueWithIdentifier:@"gettingHereSegue" sender:self]; 
}

但是，如何將按鈕標記傳遞給prepareForSegue？我們的想法是將這個標籤傳遞給prepareForSegue，並且基於標籤編號，我將與該按鈕相關的信息傳遞給下一個ViewController？

我曾嘗試：

[self performSegueWithIdentifier:@"gettingHereSegue" sender:byRoadButton.tag];

但得到一個錯誤說我試着去傳遞一個int，而不是一個ID的。

在我prepareForSegue我有以下幾點：

- (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{ 
    // ThIS IS WHAT I WANT TO DO - PSEUDO CODE 
    //int tagNumber = sender; 
    //if (tagNumber == 3) 
    //{ 
      //Set relevant content of Object here 
    //} 

    //THIS IS WHAT I CURRENTLY HAVE - NO CHECK FOR TAG 
    GettingHereContent *gettingHereContent = [[GettingHereContent alloc] init]; 
    gettingHereContent.content = @"This is my custom content based on this buttons click"; 

    GettingHereViewController *vc = (GettingHereViewController *)segue.destinationViewController; 
    vc.gettingHere = gettingHereContent; 
}

或者任何人都可以提出一個解決方案，或者一個更好的方式來做到這一點嗎？

來源

2013-11-22 heyred

嘗試[自performSegueWithIdentifier：@ 「gettingHereSegue」發件人：byRoadButton];然後在prepareForSegue中if（byRoadButton.tagNumber == 3） { //設置Object的相關內容在這裏 } –

是的，工作完美謝謝。然後在prepareForSegue中，我所要做的就是檢查按鈕是否與發件人一樣，如下所示：if（byRoadButton == sender） {//在此處做點什麼}我不必擔心標籤號碼以檢查按鈕點擊。再次感謝 – heyred

// try This replace with your code 
[self performSegueWithIdentifier:@"gettingHereSegue" sender:byRoadButton]; 

-(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(UIButton *)sender 
{ 
    NSLog(@"%ld",(long)sender.tag); 
}

來源

2013-11-22 12:27:50

嘗試

[self performSegueWithIdentifier:@"gettingHereSegue" sender:byRoadButton];

，然後在prepareForSegue

if (sender.tagNumber == 3) { //Set relevant content of Object here }

來源

2013-11-22 13:06:07

如何按鈕標籤傳遞給prepareForSegue

回答

相關問題