ラベルはそれに応じて変更されません

Question

私は以下の問題があります：ラベルは常にタグ9001で定義されたものに変更されます。

ViewController.m：

- (IBAction)switch0:(id)sender 

{(button.tag = 9001); 
UIButton *buttonPressed = (UIButton *)sender; 
SecondViewController *second =[[SecondViewController alloc] initWithNibName:nil  bundle:nil]; 
[self presentModalViewController:second animated:YES]; 
second.buttonTag = buttonPressed.tag; 
} 


- (IBAction)switch2:(id)sender2 

{ (button2.tag = 9002); 
UIButton *buttonPressed = (UIButton *)sender2; 
SecondViewController *third =[[SecondViewController alloc] initWithNibName:nil bundle:nil]; 
[self presentModalViewController:third animated:YES]; 
second.buttonTag = buttonPressed.tag; 

}

SecondViewcontroller.m

- (void)viewDidLoad 
{ 
[super viewDidLoad]; 

if (buttonTag == 9001) { 
self.label1.text = [[NSString alloc] initWithFormat:@"Radnomtext"]; 
self.label2.text = [[NSString alloc] initWithFormat:@"Randomtext"]; 
self.label3.text = [[NSString alloc] initWithFormat:@"Randomtext?"]; 
} 
if (buttonTag == 9002) { 
self.label1.text = [[NSString alloc] initWithFormat:@"Radnomtext2"]; 
self.label2.text = [[NSString alloc] initWithFormat:@"Randomtext2"]; 
self.label3.text = [[NSString alloc] initWithFormat:@"Randomtext2?"]; 

Answer 1

私はこの例では、モーダルを取り出した相続人は一例であり、あなたは二度ビューを提示：

を

- (IBAction)switch0:(id)sender 

    { 
    UIButton *buttonPressed = (UIButton *)sender; 
    SecondViewController *second =[[SecondViewController alloc] initWithNibName:nil  bundle:nil]; 

NSInteger tagToSet = 9001; 
    second.buttonTag = tagToSet;; 
     [self.navigationController pushViewController:second animated:YES]; 
    } 

とキーワードスイッチを使用するのは良いことではありません。これは目的Cの予約語です

Answer 2

最初にifの最後の括弧を閉じるのを忘れたかもしれません。

if (buttonTag == 9001) { 
    self.label1.text = [[NSString alloc] initWithFormat:@"Radnomtext"]; 
    self.label2.text = [[NSString alloc] initWithFormat:@"Randomtext"]; 
    self.label3.text = [[NSString alloc] initWithFormat:@"Randomtext?"]; 
} // bracket supposed to be here 

if (buttonTag == 9002) { 

またはおそらくbuttonTagに間違ったインスタンスを設定しますか？

- (IBAction)switch2:(id)sender2 

{ 
UIButton *buttonPressed = (UIButton *)sender2; 
SecondViewController *third =[[SecondViewController alloc] initWithNibName:nil bundle:nil]; 
[self presentModalViewController:third animated:YES]; 
second.buttonTag = buttonPressed.tag; // supposed to be third? 
[self.navigationController pushViewController:third animated:YES]; 
(button2.tag = 9002); 
} 

と安全のために、あなたはpresentModalViewController前buttonTagを設定する必要があります。