UIAlertController *actionSheet = [UIAlertController alertControllerWithTitle:@"" message:@"您确定要取消支付吗？" preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];
UIAlertAction *action2 = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action)
{
[self.navigationController popViewControllerAnimated:YES];
}];
//设置字体颜色
[action1 setValue:RGB(204, 204, 204) forKey:@"titleTextColor"];
[action2 setValue:kMainColor forKey:@"titleTextColor"];
NSMutableAttributedString *hogan1 = [[NSMutableAttributedString alloc] initWithString:@"您确定要取消支付吗？"];
[hogan1 addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:16] range:NSMakeRange(0, 10)];
[actionSheet setValue:hogan1 forKey:@"attributedMessage"];
//把action添加到actionSheet里
[actionSheet addAction:action1];
[actionSheet addAction:action2];
//相当于之前的[actionSheet show];
[self presentViewController:actionSheet animated:YES completion:nil];
```
