UIAlertController 修改文字显示

UIAlertController修改文字显示

不废话先上完整代码

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"提示" message:@"提示内容" preferredStyle:UIAlertControllerStyleAlert];
    //修改标题
    NSMutableAttributedString *attrTitle = [[NSMutableAttributedString alloc] initWithString:@"提示"];
    [attrTitle addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:20] range:NSMakeRange(0, [[attrTitle string] length])];
    [attrTitle addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, [[attrTitle string] length])];
    [alertController setValue: attrTitle forKey:@"attributedTitle"];
    //修改message
    NSMutableAttributedString * attrMessage = [[NSMutableAttributedString alloc] initWithString:@"提示内容"];
    [attrMessage addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(0, [[attrMessage string] length])];
    [attrMessage addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15] range:NSMakeRange(0, [[attrMessage string] length])];
    [alertController setValue: attrMessage forKey:@"attributedMessage"];
    //修改按钮的颜色，同上可以使用同样的方法修改内容，样式
    UIAlertAction *defaultAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil];
    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];
    [defaultAction setValue:[UIColor orangeColor] forKey:@"_titleTextColor"];
    [cancelAction setValue:[UIColor blueColor] forKey:@"_titleTextColor"];

    [alertController addAction:defaultAction];
    [alertController addAction:cancelAction];
    [self presentViewController:alertController animated:YES completion:nil];

修改标题属性

key: attributedTitle

//修改标题的内容，字号，颜色。使用的key值是“attributedTitle"
    NSMutableAttributedString *attr = [[NSMutableAttributedString alloc] initWithString:@"标题"];
    [attr addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:50] range:NSMakeRange(0, [[attr string] length])];
    [attr addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] range:NSMakeRange(0, [[hogan string] length])];
    [alertController setValue:hogan forKey:@"attributedTitle"];

修改内容属性

key: attributedMessage

//修改message
    NSMutableAttributedString * attrMessage = [[NSMutableAttributedString alloc] initWithString:@"提示内容"];
    [attrMessage addAttribute:NSForegroundColorAttributeName value:[UIColor greenColor] range:NSMakeRange(0, [[attrMessage string] length])];
    [attrMessage addAttribute:NSFontAttributeName value:[UIFont systemFontOfSize:15] range:NSMakeRange(0, [[attrMessage string] length])];
    [alertController setValue: attrMessage forKey:@"attributedMessage"];

标题AlertAction按钮字体颜色

key: _titleTextColor或者titleTextColor

 //修改按钮的颜色，同上可以使用同样的方法修改内容，样式
    UIAlertAction *defaultAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:nil];
    UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:nil];

    [defaultAction setValue:[UIColor blackColor] forKey:@"_titleTextColor"];
    [cancelAction setValue:[UIColor blackColor] forKey:@"_titleTextColor"];

    [alertController addAction:defaultAction];
    [alertController addAction:cancelAction];

效果图