IOS-43-导航栏标题navigationItem.title不能改变颜色的两种解决方法

两种方法只是形式不一样而已，但是第一种适合在导航栏特别多，而且只需要在被统一继承的基类里面设置即可：

1.在本类或者所继承的基类重写此方法：

- (void)setTitle:(NSString *)title；

见代码：

// 重写set title方法
- (void)setTitle:(NSString *)title {

UILabel *titleLabel         = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 44)];
titleLabel.text             = title;
titleLabel.font             = [UIFont boldSystemFontOfSize:20.f];
titleLabel.textAlignment    = NSTextAlignmentCenter;
titleLabel.textColor        = [UIColor whiteColor];
self.navigationItem.titleView = titleLabel;

}

2.第二种就是直接在viewWillAppear:(BOOL)animated方法

见代码：

-(void)viewWillAppear:(BOOL)animated{
[super viewWillAppear:animated];

UILabel *titleLab = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 100, 30)];
titleLabel.text             = @"换肤";
titleLabel.font             = [UIFont boldSystemFontOfSize:20.f];
titleLabel.textAlignment    = NSTextAlignmentCenter;
titleLabel.textColor        = [UIColor whiteColor];
self.navigationItem.titleView = titleLab;
}