如何在导航栏上更改UIBarButtonItem的字体颜色/文本颜色

Question

我按照下面的方式在导航栏中添加了一个条形按钮

UIBarButtonItem *cancel = [[UIBarButtonItem alloc] initWithTitle:@"CANCEL" style:UIBarButtonItemStyleBordered target:self action:@selector(goToPreviousView)];
    self.navigationItem.leftBarButtonItem = cancel;

现在我想在RED Color中显示Text"CANCEL".

我的意思是我需要更改条形按钮项目上的文本,而不是按钮的色调颜色.

怎么做？

Answer 1

看一下这个 :-

  UIBarButtonItem *cancel = [[UIBarButtonItem alloc] initWithTitle:@"Title" style:UIBarButtonItemStyleBordered target:nil action:nil];
[cancel setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIColor redColor],  UITextAttributeTextColor,nil] forState:UIControlStateNormal];

Answer 2

只是一个带有现代Obj-C语法的iOS7更新:

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

Answer 3

UITextAttributeTextColor //Is deprecated on iOS 7. 

此代码用于从外观代理更改文本颜色.

[[UIBarButtonItem appearance] setTintColor:[UIColor redColor]];

Answer 4

另一种方法是: -

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
[button setBackgroundImage:[UIImage imageNamed:@"delete.png"] forState:UIControlStateNormal];
[button setTitle:@"Delete" forState:UIControlStateNormal];
 button.titleLabel.font = [UIFont fontWithName:@"Helvetica-Bold" size:12.0f];
[button.layer setCornerRadius:4.0f];
[button.layer setMasksToBounds:YES];
[button.layer setBorderWidth:1.0f];
[button.layer setBorderColor: [[UIColor grayColor] CGColor]];
button.frame=CGRectMake(0.0, 100.0, 60.0, 30.0);
[button addTarget:self action:@selector(batchDelete)  forControlEvents:UIControlEventTouchUpInside];

UIBarButtonItem* deleteItem = [[UIBarButtonItem alloc] initWithCustomView:button];

Answer 5

这是更新的swift 4.0版本代码：

let reset = UIBarButtonItem(title: "Reset All", style: .plain , target: self, action: #selector(self.resetButtonClicked(_ :) ))
reset.setTitleTextAttributes([NSAttributedStringKey.foregroundColor: UIColor.red], for: .normal)