《iOS开发笔记—UIAlertController》

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"这是标题啊标题-标题"
message:@"这是消息啊消息-消息"
preferredStyle:UIAlertControllerStyleAlert ];
//取消style:UIAlertActionStyleDefault
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:nil];
[alertController addAction:cancelAction];
UIAlertAction *rubbishAction = [UIAlertAction actionWithTitle:@"简直废话" style:UIAlertActionStyleDestructive handler:nil];
[alertController addAction:rubbishAction];
[self presentViewController:alertController animated:YES completion:nil]；