使用多個類文件代碼

Question

比方說，我有這樣的代碼：

if ([resultButton.titleLabel.text isEqualToString:@"Tax"]) { 

     TAXViewController *controller = [[TAXViewController alloc]initWithNibName:@"TAXViewController" bundle:nil]; 
     controller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; 
     [self presentViewController:controller animated:YES completion:nil]; 
     [controller release]; 

    }else if ([resultButton.titleLabel.text isEqualToString:@""]){ 

     RENTViewController *controller = [[RENTViewController alloc]initWithNibName:@"RENTViewController" bundle:nil]; 
     controller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; 
     [self presentViewController:controller animated:YES completion:nil]; 
     [controller release]; 

    }else if //repeats a lot...... 

而且我想使用多個.h文件此完全相同的代碼。有沒有辦法編寫代碼（只在一個地方），並從其他.h文件訪問它，而不必在任何地方重複？

因此，最後我猜，我可以傳遞一個字符串到其他.h/.m文件，它會打開匹配字符串的視圖。

Answer 1

把它放在一個類中，並使你想要在其子類中訪問它的所有其他文件。

@interface SomeController : BaseViewController 

您也可以WAY簡化代碼

UIViewController *controller; 
if ([resultButton.titleLabel.text isEqualToString:@"Tax"]) 
     controller = [[TAXViewController alloc]initWithNibName:@"TAXViewController" bundle:nil]; 
else if ([resultButton.titleLabel.text isEqualToString:@""])  
     controller = [[RENTViewController alloc]initWithNibName:@"RENTViewController" bundle:nil]; 
else if 
.... 
//after all if-else statements 
controller.modalTransitionStyle = UIModalTransitionStyleCrossDissolve; 
[self presentViewController:controller animated:YES completion:nil]; 
[controller release];