自定义弹框（配合按钮使用）

UIAlertController *alert = [UIAlertController alertControllerWithTitle:self.textLabel.text message:self.detailTextLabel.text preferredStyle:UIAlertControllerStyleAlert];

    UIAlertAction *alertAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {

        NSLog(@"关了");

    }];

    [alertaddAction:alertAction];

    [[[[UIApplication sharedApplication] keyWindow] rootViewController] presentViewController:alert animated:YES completion:^{

        NSLog(@"弹出来了");

    }];