电话号码的 UITextField [英] UITextField for Phone Number

问题描述

我想知道如何格式化我用于电话号码的文本字段(例如 iPhone 上的添加新联系人"页面.当我输入新手机时，例如 1236890987，它会对其进行格式化如 [phone].)我已经将键盘设置为数字键盘.

I was wondering how I can format the textField that I'm using for a phone number (ie like the "Add New Contact" page on the iPhone. When I enter in a new mobile phone, ex. 1236890987 it formats it as [phone].) I already have the keyboard set as the number pad.

推荐答案

这是我的解决方案.. 效果很好！实时格式化电话号码.注意:这适用于 10 位电话号码.目前它会自动将其格式化为 (xxx) xxx-xxxx .. 调整到您心中的喜悦.

Here is my solution.. works great! Formats the phone number in realtime. Note: This is for 10 digit phone numbers. And currently it auto formats it like (xxx) xxx-xxxx.. tweak to your hearts delight.

首先在您的 shouldChangeCharactersInRange 中，您希望收集电话文本字段的整个字符串并将其传递给验证/格式化函数.

First in your shouldChangeCharactersInRange you want to gather the whole string for the phone text field and pass it to the validation/formatting function.

- (BOOL)textField:(UITextField *)textField shouldChangeCharactersInRange:(NSRange)range replacementString:(NSString *)string {
NSString* totalString = [NSString stringWithFormat:@"%@%@",textField.text,string];

// if it's the phone number textfield format it.
if(textField.tag==102 ) {
    if (range.length == 1) {
        // Delete button was hit.. so tell the method to delete the last char.
        textField.text = [self formatPhoneNumber:totalString deleteLastChar:YES];
    } else {
        textField.text = [self formatPhoneNumber:totalString deleteLastChar:NO ];
    }
    return false;
}

return YES; 
}

这里是电话号码的格式.正则表达式可能会被清理一下.但是我已经测试了这段代码一段时间并且似乎通过了所有铃声.请注意，我们还使用此功能删除电话号码中的号码.在这里工作更容易一些，因为我们已经去除了所有其他非数字.

And here is where the phone number is formatted. The regex could probably be cleaned up a bit. But I have tested this code for a while and seems to pass all bells. Notice we also use this function to delete a number in the phone number. Works a little easier here because we already stripped out all the other non digits.

 -(NSString*) formatPhoneNumber:(NSString*) simpleNumber deleteLastChar:(BOOL)deleteLastChar {
if(simpleNumber.length==0) return @"";
// use regex to remove non-digits(including spaces) so we are left with just the numbers 
NSError *error = NULL;
 NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"[\s-\(\)]" options:NSRegularExpressionCaseInsensitive error:&error];
 simpleNumber = [regex stringByReplacingMatchesInString:simpleNumber options:0 range:NSMakeRange(0, [simpleNumber length]) withTemplate:@""];

// check if the number is to long
if(simpleNumber.length>10) {
    // remove last extra chars.
    simpleNumber = [simpleNumber substringToIndex:10];
}

if(deleteLastChar) {
    // should we delete the last digit?
    simpleNumber = [simpleNumber substringToIndex:[simpleNumber length] - 1];
}

// 123 456 7890
// format the number.. if it's less then 7 digits.. then use this regex.
if(simpleNumber.length<7)
simpleNumber = [simpleNumber stringByReplacingOccurrencesOfString:@"(\d{3})(\d+)"
                                                           withString:@"($1) $2"
                                                              options:NSRegularExpressionSearch
                                                                range:NSMakeRange(0, [simpleNumber length])];

else   // else do this one..
    simpleNumber = [simpleNumber stringByReplacingOccurrencesOfString:@"(\d{3})(\d{3})(\d+)"
                                                           withString:@"($1) $2-$3"
                                                              options:NSRegularExpressionSearch
                                                                range:NSMakeRange(0, [simpleNumber length])];
return simpleNumber;
}

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