去掉获得通讯录号码中的空格 NO-BREAK SPACE

转载于 2014-10-17 15:33:00 发布 · 996 阅读

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原文链接：http://www.cnblogs.com/ios8023/p/4031286.html

文章标签：

#javascript #c# #ViewUI

本文介绍如何使用Objective-C语言处理字符串，包括去除字符串首尾和内部的空格。通过实例演示，读者可以掌握字符串修剪的常用方法。

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1. To trim white space in front and end.

NSString *pickerString = @" 10 mins ";

pickerString = [pickerString stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];

NSLog(@"pickerString after : %@",pickerString);

2. To trim white space in between NSString.

NSString *theString = @"    Hello      this  is a   long       string!   ";

NSCharacterSet *whitespaces = [NSCharacterSet whitespaceCharacterSet];
NSPredicate *noEmptyStrings = [NSPredicate predicateWithFormat:@"SELF != ''"];

NSArray *parts = [theString componentsSeparatedByCharactersInSet:whitespaces];
NSArray *filteredArray = [parts filteredArrayUsingPredicate:noEmptyStrings];
theString = [filteredArray componentsJoinedByString:@" "];

转载于:https://www.cnblogs.com/ios8023/p/4031286.html