objective-c - 格式说明符错误

Question

我收到错误消息：expected ':'大概是因为initWithTitle:@"You downloaded %i boards", iboard下面的短语。你能帮我修一下吗？

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

代替

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

和

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

Answer 2

你把你的代码弄得一团糟。

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];