系统导航栏隐藏和改变颜色

改变系统导航栏的字体颜色

[[UITabBarItemappearance] setTitleTextAttributes:[NSDictionarydictionaryWithObjectsAndKeys:[UIColorcolorWithRed:79%256/255.0green:168%256/255.0blue:21%256/255.0alpha:1],NSForegroundColorAttributeName,nil] forState:UIControlStateSelected];

让系统的导航栏隐藏

-(BOOL) prefersStatusBarHidden

{

    return YES;

}

系统的导航栏变色

-(UIStatusBarStyle)preferredStatusBarStyle{

    returnUIStatusBarStyleLightContent;

}