修改rightBarButtonItem字体颜色

从各方寻到下面方法：

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UIBarButtonItem*rightitem = [[UIBarButtonItemalloc] initWithTitle:@"确定"style:(UIBarButtonItemStyleDone) target:selfaction:@selector(moreConfig:)];

self.navigationItem.rightBarButtonItem = rightitem;[self.navigationItem.rightBarButtonItem setTintColor:[UIColorredColor]];

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但是我尝试并没有成功，尝试下面的方式成功实现想要的效果：

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UIBarButtonItem *rightitem = [[UIBarButtonItem alloc]initWithTitle:@"确定"style:(UIBarButtonItemStyleDone)target:selfaction:@selector(moreConfig:)];

NSDictionary *dic =[NSDictionarydictionaryWithObject:DRGBCOLOR(44,163,255,1)forKey:NSForegroundColorAttributeName];[rightitemsetTitleTextAttributes:dicforState:UIControlStateNormal];

self.navigationItem.rightBarButtonItem = rightitem;

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