//设置导航栏的标题
self.navigationItem setTitle:@"我的标题";
//设置导航条标题属性：字体大小／字体颜色……
/*设置头的属性：setTitleTextAttributes*/
[self.navigationController.navigationBar setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:19],NSForegroundColorAttributeName:[UIColor whiteColor]}];
//初始化导航条右按钮
/*设置文字与调用方法一个UIBarButtonItem*/
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"更多成绩" style:UIBarButtonItemStylePlain target:self action:@selector(mustResults)];
//初始化导航条左按钮
/*设置一张图片 与 文字 返回一个UIBarButtonItem*/
self.navigationItem.leftBarButtonItem = [UIBarButtonItem itemWithImageName:@"compose_locatebutton_succeeded" title:@"更多成绩" target:self action:@selector(mustResults)];