Question

我有一系列姓名＆＃39;姓名＆＃39; 。我试图在用户点击表格单元格时显示警报。如果用户触摸第一个单元格，那么[names objectatindex：0]应该是警报视图中的消息。这就是我所做的

 UIAlertView *okAlert = [[UIAlertView alloc] initWithTitle:@"ok" message:@"You have just tapped [names objectatindex:0]" delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil];

    okAlert.tag=0;


    [okAlert performSelectorOnMainThread:@selector(show) withObject:nil waitUntilDone:NO];

在消息中，它不显示名称。我无法弄清楚问题所在。你能帮帮我吗？

提前致谢。

Answer 1

试试这个：

UIAlertView *okAlert = [[UIAlertView alloc] initWithTitle:@"OK"
                                                  message:[NSString stringWithFormat:@"You have just tapped %@.", [names objectAtIndex:0]]
                                                 delegate:self
                                        cancelButtonTitle:@"No"
                                         otherButtonTitles:@"Yes", nil];

Answer 2

message:@"You have just tapped [names objectatindex:0]"

您已将该代码隐藏在字符串常量中。现在它只是字母。

尝试：

UIAlertView *okAlert = [[UIAlertView alloc] initWithTitle:@"ok" 
  message:[@"You have just tapped " stringByAppendingString:names.firstObject]
  delegate:self cancelButtonTitle:@"No" otherButtonTitles:@"Yes", nil];

无法将变量传递到警报视图中

2 个答案: