html导航栏的颜色怎么改变 我怎样才能改变导航栏的背景颜色

尝试将对象设置为navigationBar的子视图。

设置色调颜色

UINavigationController *theNavigationController = [[UINavigationController alloc] initWithRootViewController: aFeedControler];

theNavigationController.navigationBar.tintColor = [UIColor blackColor];在viewControllers中添加segmentedControl作为子视图，如下所示：

UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:

[NSArray arrayWithObjects:[UIImage imageNamed:@"segment_check.png"],

[UIImage imageNamed:@"segment_search.png"],

[UIImage imageNamed:@"segment_tools.png"], nil]];

CGRect frame = CGRectMake(0,0, 200,40);

segmentedControl.frame = frame;

[segmentedControl addTarget:self action:@selector(segmentAction:) forControlEvents:UIControlEventValueChanged];

segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;

segmentedControl.selectedSegmentIndex = 1;

self.navigationItem.titleView = segmentedControl;对于按钮，您应该尝试创建UIButtons而不是UIBarButtonsItems，并将它们添加为子视图。如果您创建UIBarButtonsItems并像这样添加它们self.navigationItem.rightBarButtonItem = tempButton;你会得到你看到的效果。

如果你把它们添加为子视图你不应该有你提到的问题..希望它有所帮助。