iOS UINavigationController代理方法实现自定义

来源：互联网发布：北大青鸟软件培训中心编辑：程序博客网时间：2024/06/04 20:15

<UINavigationControllerDelegate>
self.navigationController.delegate = self;
- (void) navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
    // 如果进入的是当前视图控制器
    if (viewController == self) {
        //        // 背景设置为黑色
        //        self.navigationController.navigationBar.tintColor = [UIColor clearColor];
        //        // 透明度设置为0.3
        //        self.navigationController.navigationBar.alpha = 0;
        //        // 设置为半透明
        //        self.navigationController.navigationBar.translucent = NO;
        [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@"000000000"] forBarMetrics:(UIBarMetricsDefault)];
        [self.navigationController.navigationBar setShadowImage:[UIImage alloc]];


    } else {
        [self.navigationController.navigationBar setBackgroundImage:[UIImage imageNamed:@""] forBarMetrics:(UIBarMetricsDefault)];
//        // 进入其他视图控制器
//        self.navigationController.navigationBar.alpha = 1;
//        // 背景颜色设置为系统默认颜色
//        self.navigationController.navigationBar.tintColor = nil;
//        self.navigationController.navigationBar.translucent = NO;
    }
}

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