[iOS] 設定 UITabBar 隱藏

隱藏 - 在 [self.navigationController pushViewController:animated:] 之前設定

self.hidesBottomBarWhenPushed = YES;

顯示 - (void)viewWillDisappear:(BOOL)animated

self.hidesBottomBarWhenPushed = NO;

[iOS] 設定 UINavigationBar 透明度

打開 - (void)viewWillAppear:(BOOL)animated

self.navigationController.navigationBar.translucent = YES;

self.navigationController.navigationBar.alpha = 0.7f;

關閉 - (void)viewWillDisappear:(BOOL)animated

self.navigationController.navigationBar.translucent = NO;

self.navigationController.navigationBar.alpha = 1.0f;