objective-c - UIAlertView dismissWithClickedButtonIndex :animated: method error

Question

  - (void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated{
if (0 == [alerts cancelButtonIndex]) {
    NSLog(@"YES");
} else if (1 == [alerts cancelButtonIndex]) {
    NSLog(@"NO");
}

}

我有一个UIAlertView，这是警报的初始化:

alerts = [[UIAlertView alloc] initWithTitle:@"Trumpets" message:@"Are you sure you would like to use one trumpet, this will give you 10 random units" delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil];
    [alerts show];

错误是在(() token 之前的预期')'

我不明白，NSLogs可以帮助记住哪个选项。
提前致谢

Answer 1

您错过了结尾括号:

- (void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated{
    if ([alerts cancelButtonIndex] == 0) {
        NSLog(@"YES");
    } else if ([alerts cancelButtonIndex] == 1) {
        NSLog(@"NO");
    }
}