設置App的名稱

設置App的啟動圖片

需要注意點是，App要殺掉重啟才能顯示出啟動圖片

2種方法防止圖片被渲染

vc02.tabBarItem.image = [UIImage imageNamed:@"tabBar_new_icon"];
UIImage *image = [UIImage imageNamed:@"tabBar_new_click_icon"];
image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];
vc02.tabBarItem.selectedImage = image; 

文字被渲染解決方法

vc02.tabBarItem.title = @"新帖";
NSMutableDictionary *attrs = [NSMutableDictionary dictionary];
attrs[NSForegroundColorAttributeName] = [UIColor grayColor];
[vc02.tabBarItem setTitleTextAttributes:attrs forState:UIControlStateNormal];
NSMutableDictionary *attrs1 = [NSMutableDictionary dictionary];
attrs1[NSForegroundColorAttributeName] = [UIColor blackColor];
[vc02.tabBarItem setTitleTextAttributes:attrs1 forState:UIControlStateSelected];

• 通過appearance統一設置所有UITabBarItem的文字屬性
• 后面帶有UI_APPEARANCE_SELECTOR的方法，都可以通過appearance對象來統一設置

NSMutableDictionary *dic = [NSMutableDictionary dictionary];
dic[NSForegroundColorAttributeName] = [UIColor grayColor];
    
NSMutableDictionary *selectedDic = [NSMutableDictionary dictionary];
selectedDic[NSForegroundColorAttributeName] = [UIColor darkGrayColor];
    
UITabBarItem *item = [UITabBarItem appearance];
[item setTitleTextAttributes:dic forState:UIControlStateNormal];
[item setTitleTextAttributes:selectedDic forState:UIControlStateSelected];