NSString

最新推荐文章于 2024-10-09 21:25:21 发布

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最新推荐文章于 2024-10-09 21:25:21 发布

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原文链接：http://www.cnblogs.com/chenjunbiao/archive/2011/05/04/2036195.html

本文介绍了使用NSString进行字符串处理的方法，包括字符串的拆分、拼接、类型转换及可变字符串的使用。通过实例展示了如何将C字符串转换为NSString以及反之。

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1. 折分字符串操作：

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[])
{

    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    //将一个句子分解为单独的单词 
    NSString *string1 = @"my name is bill";
    NSArray *words = [string1 componentsSeparatedByCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
    NSLog(@"Word array: %@", words);
    
    //把一个NSString追加到另一个NSString
    NSString *str1 = @"第一个字符串 ";
    NSString *str2 = @"第二个字符串。";
    NSString *result = [str1 stringByAppendingFormat:str2];
    NSLog(@"result: %@", result);

    [pool drain];
    return 0;
}

2. C字符串和NSString之间的转换

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[])
{

    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    //C字符串和NSString之间的转换
    char* cString = "Hello bill.";
    NSString *nsString = [NSString stringWithUTF8String:cString];
    NSLog(@"%@\r\n",nsString);
    
    char* cString2 = [nsString UTF8String];
    printf(cString2);
    printf("\r\n");

    [pool drain];
    return 0;
}

3.可变字符串

#import <Foundation/Foundation.h>

int main (int argc, const char * argv[])
{

    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    NSMutableString *mutableString = [NSMutableString stringWithString:@"可变字符串:"];
    
    [mutableString insertString:@"NSMutableString" atIndex:[mutableString length]];
    
    NSLog(@"%@", mutableString);

    [pool drain];
    return 0;
}

转载于:https://www.cnblogs.com/chenjunbiao/archive/2011/05/04/2036195.html