【iOS开发-103】解决方案：iOS8.1中UIBarButtonItem的setTitleTextAttributes对Disabled颜色设置无效

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（1）情景：在iOS8.1中，我们通常会利用如下语句，设置全局的导航条按钮item的主题

UIBarButtonItem *item=[UIBarButtonItem appearance];
NSMutableDictionary *textAttrs=[NSMutableDictionary dictionary];
textAttrs[NSForegroundColorAttributeName]=[UIColor orangeColor];
[item setTitleTextAttributes:textAttrs forState:UIControlStateNormal];
[item setTitleTextAttributes:textAttrs forState:UIControlStateHighlighted];
    
NSMutableDictionary *dTextAttrs=[NSMutableDictionary dictionaryWithDictionary:textAttrs];
dTextAttrs[NSForegroundColorAttributeName]=[UIColor grayColor];
[item setTitleTextAttributes:dTextAttrs forState:UIControlStateDisabled];

-(void)setupNavBar{
    self.navigationItem.rightBarButtonItem=[[UIBarButtonItem alloc]initWithTitle:@"发送" style:UIBarButtonItemStyleDone target:self action:@selector(send)];
    self.navigationItem.rightBarButtonItem.enabled=NO;
}

将上面的设置为disabled的语句放置在viewWillAppear中。

-(void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    //如果把下面这一句写在ViewDidLoad中，disabled的item颜色没有效果
    self.navigationItem.rightBarButtonItem.enabled=NO;
}

【iOS开发-103】解决方案：iOS8.1中UIBarButtonItem的setTitleTextAttributes对Disabled颜色设置无效

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原文地址：http://blog.csdn.net/weisubao/article/details/42709349