格式说明符错误

Question

我收到错误消息：expected ':'可能是因为下面的短语initWithTitle:@"You downloaded %i boards", iboard。你能帮我解决吗？

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"You downloaded %i boards", iboard message:@"Press Ok to continue" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil]; 
      [alert show]; 

Answer 1

更换

initWithTitle:@"You downloaded %i boards", iboard 

与

initWithTitle:[NSString stringWithFormat:@"You downloaded %i boards", iboard] 

Answer 2

你已经做了惹你的代码。

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"You downloaded %i boards", iboard message:@"Press Ok to continue" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil]; 

它应该是：

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[NSString stringWithFormat:@"You downloaded %i boards", iboard] 
               message:@"Press Ok to continue" 
               delegate:self 
             cancelButtonTitle:@"Ok" 
             otherButtonTitles:nil];