Question

更新已回答。我是。

目前我UISegmentedControl的文字颜色有问题;它需要在UIControlStateSelected的第一次加载时更改。代码有效，但只是有条件的。当您在导航栏上使用分段控件访问页面，点击后退按钮，然后再次访问该页面时，它可以正常工作。我假设这里有继承问题。让我解释..

分段控件的位置位于导航栏的顶部。

包含SegmentedControl的ViewController的继承： TabBarViewController（使用AppDelegate管理） - ＆gt;导航控制器 - ＆gt; ViewController（'inviteSegBar'所在的位置）

以下是AppDelegate.m中的代码：

[[UINavigationBar appearance] setBarTintColor:[UIColor colorWithHexString:@"#669900"]];//this one sets it green.
[[UINavigationBar appearance] setBackgroundColor:[UIColor whiteColor]];

以下是VC的viewDidLoad:代码，其中包含'inviteSegBar'，问题为UISegmentedControl：

- (void)viewDidLoad
{
    [super viewDidLoad];

    //CUSTOM APPEARANCE <below>
    self.navigationController.navigationBar.barTintColor = [UIColor whiteColor];
    self.navigationController.navigationBar.tintColor = [UIColor colorWithHexString:@"#669900"];

    inviteSegBar.tintColor = [UIColor colorWithHexString:@"#333333"];

    [[UISegmentedControl appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor colorWithHexString:@"#669900"]} forState:UIControlStateSelected];
}

就像我说的最后一行有效，但只有当你重新访问页面时。为什么会这样？

PS 这是同样的问题，我已经在列出任何答案之前尝试过此代码。

Answer 1

找到答案：简单地移动

[[UISegmentedControl appearance] setTitleTextAttributes:@{NSForegroundColorAttributeName : [UIColor colorWithHexString:@"#669900"]} forState:UIControlStateSelected];

到您的AppDelegate.m文件

Answer 2

使用

UIColor *whitecolor = [UIColor whiteColor];
NSDictionary *attributes = [NSDictionary dictionaryWithObjects:@[whitecolor] forKeys:@[UITextAttributeTextColor]];
[yourSegment setTitleTextAttributes:attributes
                                         forState:UIControlStateNormal];

UIColor *grayColor = [UIColor darkGrayColor];
NSDictionary *attributes = [NSDictionary dictionaryWithObjects:@[grayColor] forKeys:@[UITextAttributeTextColor]];
[yourSegment setTitleTextAttributes:attributes
                                         forState:UIControlStateSelected];

<强>更新

UIColor *whitecolor = [UIColor whiteColor];
    NSDictionary *attributes = [NSDictionary dictionaryWithObjects:@[whitecolor] forKeys:@[NSForegroundColorAttributeName]];
    [yourSegment setTitleTextAttributes:attributes
                                             forState:UIControlStateNormal];

    UIColor *grayColor = [UIColor darkGrayColor];
    NSDictionary *attributes = [NSDictionary dictionaryWithObjects:@[grayColor] forKeys:@[NSForegroundColorAttributeName]];
    [yourSegment setTitleTextAttributes:attributes
                                             forState:UIControlStateSelected];

Answer 3

此代码允许您在分段控件中为标签设置一些文本属性：

NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:
                            [UIColor blackColor], UITextAttributeTextColor,
                            nil];
[_segmentedControl setTitleTextAttributes:attributes forState:UIControlStateSelected];

Apple文档中允许的更多属性：link

Answer 4

这可能会对您有所帮助：

UIAppearance代理设置标题文本属性但保留tintColor用于边框。

[[UISegmentedControl appearance] setTitleTextAttributes:@{ 
NSForegroundColorAttributeName : [UIColor redColor] 
} forState:UIControlStateNormal];

Answer 5

对于更改UISegmentedControl外观，例如插入到viewDidLoad函数中此代码：

// color selected text ---> red
[[UISegmentedControl appearance] setTitleTextAttributes:@{ NSForegroundColorAttributeName : [UIColor redColor] } forState:UIControlStateSelected];

// color disabled text ---> blue
[[UISegmentedControl appearance] setTitleTextAttributes:@{ NSForegroundColorAttributeName : [UIColor blueColor] } forState:UIControlStateNormal];

// color tint segmented control ---> black
[[UISegmentedControl appearance] setTintColor:[UIColor greenColor]];

UISegmentedControl仅在重新访问ViewController时更改文本颜色

5 个答案: