有的时候我们只是想弹出个提示框来提示,测试之类的东西,一直要去 写 一大段的代码是挺烦的,copy 感觉也不太好 ,那么宏定义就是个不错的选择了.
// 抽成宏之后,只需要一行代码就能完成弹窗提醒
#define alert(string, detail,VC,okTitle) UIAlertController *alertController = [UIAlertController alertControllerWithTitle:string message:detail preferredStyle:UIAlertControllerStyleAlert]; \
UIAlertAction *okAction = [UIAlertAction actionWithTitle:okTitle style:UIAlertActionStyleDefault handler:nil]; \
[alertController addAction:okAction]; \
[VC presentViewController:alertController animated:YES completion:nil];
顺便附上 获取当前视图所在的 ViewController 的代码
//OC
- (UIViewController *)viewController
{
UIViewController *viewController = nil;
UIResponder *next = self.nextResponder;
while (next)
{
if ([next isKindOfClass:[UIViewController class]])
{
viewController = (UIViewController *)next;
break;
}
next = next.nextResponder;
}
return viewController;
}
//swift
func getViewController() -> UIViewController{
var viewController :UIViewController! ;
var next = self.next;
while ((next) != nil)
{
if (next?.isKind(of: UIViewController.classForCoder()))!
{
viewController = next as! UIViewController;
break;
}
next = next!.next;
}
return viewController;
}
