最近升級了iOS13系統(tǒng)摔认，之前項目使用系統(tǒng)TabBarController創(chuàng)建的項目在啟動的時候selectTitleColor 和 NormalTitleColor 有時候設置不起作用。
tabBarItem選中顏色有時為設置的顏色谎倔，有時變?yōu)橄到y(tǒng)藍色担忧；
tabBarItem未選中顏色有時為設置的顏色，有時變?yōu)橄到y(tǒng)藍色截歉；
適配如下：
if (@available(iOS 13.0, *)) {
// iOS 13以上
self.tabBar.tintColor = [UIColor F2400BRedColor];
self.tabBar.unselectedItemTintColor = [UIColor grayColor];
UITabBarItem *item = [UITabBarItem appearance];
[item setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:12]} forState:UIControlStateNormal];
[item setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:12]} forState:UIControlStateSelected];
} else {
// iOS 13以下
UITabBarItem *item = [UITabBarItem appearance];
[item setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:12], NSForegroundColorAttributeName:[UIColor grayColor]} forState:UIControlStateNormal];
[item setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:12], NSForegroundColorAttributeName:[UIColor F2400BRedColor]} forState:UIControlStateSelected];
}
查找資料過程中摇肌，發(fā)現(xiàn)還有以下設置也會起作用：
感謝博主「幻灬聽」分享
原文鏈接:請點這里
Apple將設置UITabBarItem的文字屬性的任務，交給了13中新添加的屬性UITabBarItem.standardAppearance媒役。代碼如下：
viewController.tabBarItem.title = title;
if (@available(iOS 13.0, *)) {
UITabBarAppearance *appearance = [UITabBarAppearance new];
// 設置未被選中的顏色
appearance.stackedLayoutAppearance.normal.titleTextAttributes = @{NSForegroundColorAttributeName: [UIColor whiteColor]};
// 設置被選中時的顏色
appearance.stackedLayoutAppearance.selected.titleTextAttributes = @{NSForegroundColorAttributeName: :[UIColor F2400BRedColor]};
viewController.tabBarItem.standardAppearance = appearance;
} else {
[viewController.tabBarItem setTitleTextAttributes:@{NSForegroundColorAttributeName: [UIColor grayColor]}];
}
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