ios 彈出框

1，取消、肯定

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示" message:@"你肯定刪除該消息？" preferredStyle:UIAlertControllerStyleAlert];
        [alertController addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil]];
        [alertController addAction:[UIAlertAction actionWithTitle:@"肯定" style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) {
            Log(@"肯定");
        }]];
        [self presentViewController:alertController animated:YES completion:nil];

2.彈出框

UIAlertView *alert = [[UIAlertView alloc]initWithTitle:nil message:@"哈哈消息" delegate:self cancelButtonTitle:@"肯定" otherButtonTitles:nil];
        [alert show];