如果模态出navigationController，navigationController的设置需要放在viewWillAppear里

最新推荐文章于 2018-03-26 09:02:00 发布

原创最新推荐文章于 2018-03-26 09:02:00 发布 · 653 阅读

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本文详细阐述了如何在使用presentViewController模态呈现视图时，在viewWillAppear方法中设置navigationController，确保页面加载与导航属性更改同步，避免延迟显示问题。

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-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self setnavigation];
}

用presentViewController 模态出视图时，需要在viewWillAppear里设置navigationController，否则会出现先加载页面，后改变navigation属性，但是改变延迟，显示页面的时候，并不会设置后的效果

附：

#pragma mark - 设置navigation
-(void)setnavigation
{
    [self.navigationController.navigationBar setBarStyle:UIBarStyleBlack];//执行状态栏白色


    self.navigationController.navigationBar.translucent = NO;//设置不半透明
    //    UIBarButtonItem * rightBtn = [[UIBarButtonItem alloc]initWithImage:[[UIImage imageNamed:@"个人中心"]imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal] style:UIBarButtonItemStylePlain target:self action:@selector(clickRightBtn:)];
    //    self.navigationItem.rightBarButtonItem = rightBtn;

    //设置背景颜色
    if (IS_IOS7) {
        self.navigationController.navigationBar.barTintColor= [UIColor colorWithRed:45.0/255.0 green:45.0/255.0 blue:45.0/255.0 alpha:1];

        self.navigationController.navigationBar.tintColor = [UIColor whiteColor];

        //设置标题字体和颜色
        NSDictionary *dic1 = [NSDictionary dictionaryWithObjectsAndKeys:[UIColor whiteColor],NSForegroundColorAttributeName,[UIFont fontWithName:@"TrebuchetMS-Bold" size:20],NSFontAttributeName ,nil];
        [self.navigationController.navigationBar setTitleTextAttributes:dic1];
        [[UINavigationBar appearance]setTitleTextAttributes:dic1];
    }






    //添加返回按钮
    UIBarButtonItem * leftBtn = [[UIBarButtonItem alloc]initWithTitle:@"取消" style:UIBarButtonItemStylePlain target:self action:@selector(doQuxiao)];
    self.navigationItem.leftBarButtonItem = leftBtn;

}

-(void)doQuxiao
{
    [self dismissViewControllerAnimated:YES completion:nil];
}