ios - 更改 NavigationController 中 UIButton 的颜色

Question

我设置了 NavigationBar 的标题并更改了它的颜色，使用以下代码成功:

self.navigationController.navigationBar.barTintColor = [UIColor blackColor];
    self.title = @"SHARE";
    [self.navigationController.navigationBar setTitleTextAttributes:
     @{NSForegroundColorAttributeName:[UIColor whiteColor]}];
    self.edgesForExtendedLayout =UIRectEdgeNone;

如您所见，条形颜色为黑色，标题颜色为白色。现在我想在 ir 的右边添加一个按钮。按钮已成功添加，但未更改颜色。

UIButton *forwdButton = [[UIButton alloc] init];
    forwdButton.titleLabel.text = @"Send";
    [forwdButton.titleLabel setTintColor:[UIColor whiteColor]];
    [forwdButton setShowsTouchWhenHighlighted:TRUE];
    [forwdButton addTarget:self action:@selector(someMethod) forControlEvents:UIControlEventTouchDown];
    UIBarButtonItem *barFrwdItem = [[UIBarButtonItem alloc] initWithCustomView:forwdButton];
    self.navigationItem.hidesBackButton = TRUE;

    self.navigationItem.rightBarButtonItem = barFrwdItem;

在这段代码中，我在这些行中遇到了问题:

forwdButton.titleLabel.text = @"Send";
        [forwdButton.titleLabel setTintColor:[UIColor whiteColor]];

它仍然显示一个黑色按钮。它没有改变它的颜色。
我已尝试执行以下操作:

[barFrwdItem setTintColor:[UIColor whiteColor]]; //Which is the UIBarButtonItem

还有

[forwdButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal]; // which is the UIButton

Answer 1

您以错误的方式添加按钮。请像这样添加正确的按钮。

UIBarButtonItem *chkmanuaaly = [[UIBarButtonItem alloc]initWithTitle:@"Send" style:UIBarButtonItemStylePlain target:self action:@selector(someMethod)];
self.navigationItem.rightBarButtonItem=chkmanuaaly;

然后添加这一行来改变颜色

[chkmanuaaly setTitleTextAttributes:
          [NSDictionary dictionaryWithObjectsAndKeys: 
               [UIColor whiteColor], UITextAttributeTextColor,nil] 
                                    forState:UIControlStateNormal];
[UINavigationBar appearance].tintColor = [UIColor whiteColor];