childViewController 小计

设置childViewcontroller   

Unbalanced calls to begin/end appearance transitions for

以上报错 需要添加 

transitionFromViewController 方法完成与否的判断 跳转没有完成就往下一个childviewcontroller 跳转 会出现黑屏等问题。

self.ganZhi_vc = [board instantiateViewControllerWithIdentifier:@"HDGanZhiViewController"];
    [self addChildViewController:self.ganZhi_vc];
    
    self.data_vc = [board instantiateViewControllerWithIdentifier:@"HDDataViewController"];
    [self addChildViewController:self.data_vc];
    
    self.map_vc = [board instantiateViewControllerWithIdentifier:@"HDMapViewController"];
    [self addChildViewController:self.map_vc];
    
    self.code_vc = [board instantiateViewControllerWithIdentifier:@"HDCodeViewController"];
    [self addChildViewController:self.code_vc];
    
    [self.view addSubview:self.root_vc.view];
    [self.root_vc didMoveToParentViewController:self];
    _currentViewController = self.root_vc;

界面跳转

-(void)changeViewControllerWith:(UIViewController *)temp
{

if (_transitioning) {

        return;

    }

    else

    {

        if (_currentViewController != temp) {

            [self transitionFromViewController:_currentViewController toViewController:temp duration:0 options:UIViewAnimationOptionTransitionCrossDissolve animations:nil completion:^(BOOL finished) {

                _transitioning = NO;

            }];

            _currentViewController = temp;

        }

    }

    
}