1.設置

2.富文本

//1.修改title

NSMutableAttributedString *alertControllerStr = [[NSMutableAttributedString alloc] initWithString:@"物品詳情"];

[alertControllerStr addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, 2)]; ?／／物品2個字為紅色

[alertControllerStr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:17] range:NSMakeRange(0, 2)]; ??

[alertController setValue:alertControllerStr forKey:@"attributedTitle"];

//2.修改message

NSMutableAttributedString *alertControllerMessageStr = [[NSMutableAttributedString alloc] initWithString:@"輕便的移動電源很容易就電量耗盡，而大容量的移動電源往往都比較笨重，這樣的體驗遠遠比不上直接更換電池。"];

[alertControllerMessageStr addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(0, 10)];

[alertControllerMessageStr addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(11, 20)];

[alertControllerMessageStr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:20] range:NSMakeRange(20, 30)];

[alertController setValue:alertControllerMessageStr forKey:@"attributedMessage"];

//3.修改按鈕的顏色

[cancelAction setValue:[UIColor orangeColor] forKey:@"titleTextColor"];