在iphone中关闭UIAlertView时发出警告

Question

我收到以下警告 -

 warning: passing argument 1 of 'dismissWithClickedButtonIndex:animated:' makes integer from pointer without a cast

[alertForLoading dismissWithClickedButtonIndex:nil animated:YES];

Answer 1

dismissWithClickedButtonIndex:animated期望NSInteger作为参数，您指定的是nil。

将nil替换为您要按下的按钮的索引，如下所示：

 [alertForLoading dismissWithClickedButtonIndex:0 animated:YES];

Answer 2

“dismissWithClickedButtonIndex”正在接受任何int号。此方法调用以下UIAlertViewDelegate方法

- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:(NSInteger)buttonIndex

请参阅referance获取更多信息：UIAlertViewDelegate Protocol Reference