iOS设置图片名称、启动图片、防止TabBar图片和文字渲染

设置App的名称

设置App的启动图片

需要注意点是，App要杀掉重启才能显示出启动图片

2种方法防止图片被渲染

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

文字被渲染解决方法

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];

• 通过appearance统一设置所有UITabBarItem的文字属性
• 后面带有UI_APPEARANCE_SELECTOR的方法，都可以通过appearance对象来统一设置

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];