一,代码. - (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view, typically from a nib. NSString *string=@"123 456 789 "; NSLog(@"--string---%@",string); NSString *newStr= [string stringByReplacingOccu…

http://blog.sina.com.cn/s/blog_6f29e81f0101qwbk.html [问题描述]       今天请求服务器返回的字段中含有空格,这空格是服务器开发人员不小心往数据中多敲了,所以在客户端需要把字符串中的空格过滤掉. [问题分析] 1.使用NSString中的stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]]方法只是去掉左右两边的空格: 2.使用NSString *s…

main.m #import <Foundation/Foundation.h> #import "NSString+Trim.h" int main(int argc, const char * argv[]) { @autoreleasepool { NSString *strSource = @" Kenmu 我是啊武 "; NSLog(@"“%@”去掉前后空格后为“%@”", strSource, [NSString trim…

去除 username中的空格,table newline,nextline 代码如下: NSCharacterSet *whitespace = [NSCharacterSet  whitespaceAndNewlineCharacterSet]; NSString * string =@"liujun        \t          "; string = [string  stringByTrimmingCharactersInSet:whitespace];  注释: s…

转自:http://blog.sina.com.cn/s/blog_5421851501014xif.html 去除 username中的空格,table newline,nextline 代码如下:(三行代码) NSCharacterSet *whitespace = [NSCharacterSet  whitespaceAndNewlineCharacterSet]; NSString * username = [mUsernameField  stringValue]; username…

NSString *_string = [NSString stringWithFormat:@"123 456"]; NSRange _range = [_string rangeOfString:@" "]; if (_range.location != NSNotFound) { //有空格 }else { //没有空格 }  …

NSString *password = @"12  34"; [password stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];…

NSString *string = @" spaces in front and at the end "; NSString *trimmedString = [string stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];…

NSString *string = @" spaces in front and at the end "; NSString *trimmedString = [string stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]];…

NSCharacterSet以及它的可变版本NSMutableCharacterSet,用面向对象的方式表示一组Unicode字符,它经常与NSString及NSScanner组合起来使用,在不同的字符上做过滤,删除或者分割操作,下面是NSCharacterSet提供的类方法 Creating a Standard Character Set + alphanumericCharacterSet + capitalizedLetterCharacterSet + controlCharacter…