从电话簿中提取的联系号码中删除空格 [英] Remove white space from contact number fetched from phone book

问题描述

我知道这是一个非常基本的问题，但我现在陷入困境。

I know its a very basic question, but I am stuck at this point.

我从电话簿中取出联系电话号码并将它们放在一个阵列中。

I am fetching contact numbers from phonebook and having them in an array.

然后从NSString中的数组中取一个特定的一个

And then fetching a particular one from array in NSString

我试图从数字中删除空格，但实际上并没有下面的代码：

And I am trying to remove white space from the number, but it is not actually with the below written codes:

NSString *num = @"[phone]";

num = [num stringByReplacingOccurrencesOfString:@" " withString:@"0"];

**OR**

num = [num stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];

请告诉我要删除此空间需要做什么。

Please let me know what I need to do to remove this space.

谢谢

编辑

NSString *num = [contactNumbers objectAtIndex:i];
        num = [num stringByReplacingOccurrencesOfString:@"-" withString:@""];
        num = [num stringByReplacingOccurrencesOfString:@" " withString:@""];
        num = [num substringFromIndex:[num length]-10];

推荐答案

完成诀窍：

NSString * strippedNumber = [num stringByReplacingOccurrencesOfString:@"[^0-9]" withString:@"" options:NSRegularExpressionSearch range:NSMakeRange(0, [number length])];

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