UIAlertController 修改文字显示实现方法

UIAlertController修改文字显示

不废话先上完整代码

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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

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//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

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//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

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//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