UIAlertController* alert = [UIAlertController alertControllerWithTitle:title ?message:message ?preferredStyle:UIAlertControllerStyleAlert];
NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
//設置內容的對齊方式
??paragraphStyle.alignment = NSTextAlignmentLeft;
//設置內容的行間距
??paragraphStyle.lineSpacing=5.0;
NSDictionary * attributes = @{NSFontAttributeName : [UIFont systemFontOfSize:13.0], NSParagraphStyleAttributeName : paragraphStyle};
?NSMutableAttributedString *attributedTitle = [[NSMutableAttributedString alloc] initWithString:message];
//設置內容的字體顏色
? [attributedTitle ?addAttribute:NSForegroundColorAttributeName value:[UIColor redColor] ? range:NSMakeRange(0, message.length)];
? ?[attributedTitle ?addAttributes:attributesrange:NSMakeRange(0, message.length)];
? ?[alert setValue:attributedTitle ?forKey:@"attributedMessage"];
參考以下兩個鏈接：
http://www.reibang.com/p/51949eec2e9c
https://blog.csdn.net/qq_33608748/article/details/77572442
