技巧-搜索与替换字符串

搜索与替换字符串

    NSString *myString = @"one two three four five six seven";

    NSRange searchRange = [myString rangeOfString:@"five"];

    if (searchRange.location != NSNotFound)

        // 搜索指定字符的确切位置及长度 searchRange.location, searchRange.length

        NSLog(@"Range location:%d, length:%d", searchRange.location, searchRange.length);

    // 替换指定字符串，也可替换空格，逗号等

    NSLog(@"替换后：%@", [myString stringByReplacingCharactersInRange:searchRange

                                                   withString:@"New string"]);

    // 替换所有匹配项

    NSString *replaced = [myString stringByReplacingOccurrencesOfString:@" " withString:@"*"];

    NSLog(@"%@", replaced);

2013-05-17 10:59:41.817 base 5-14[597:c07] Range location:19, length:4

2013-05-17 10:59:41.817 base 5-14[597:c07] 替换后：one two three four New string six seven

2013-05-17 10:59:41.818 base 5-14[597:c07] one*two*three*four*five*six*seven