全局設(shè)置導(dǎo)航欄背景色：

// 設(shè)置狀態(tài)欄顏色

[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;

// 設(shè)置全局UINavigationBar背景色

UINavigationBar*bar = [UINavigationBar ?appearance];

CGFloat ?rgb =0.1;

bar.barTintColor= [UIColor colorWithRed:rgb green:rgb blue:rgb alpha:0.9];

bar.tintColor= [UIColor whiteColor];

bar.titleTextAttributes=@{NSForegroundColorAttributeName: [UIColor whiteColor]};