Iphone 即使NSString Replace中的范围正确，NSRANGE异常

我已经编写了一个代码来替换删除NSString中的子字符串…我的逻辑是使用“rangeofString”来查找每个子字符串字符的位置，然后使用“ReplaceOccurance”以空格替换子字符串字符，然后修剪空白字符。但是我在替换行中得到一个错误

*** Terminating app due to uncaught exception 'NSRangeException', reason: '-[__NSCFString replaceOccurrencesOfString:withString:options:range:]: Range or index out of bounds'
*** First throw call stack:
(
    0   CoreFoundation                      0x00007fff85614b06 __exceptionPreprocess + 198
    1   libobjc.A.dylib                     0x00007fff83c4e3f0 objc_exception_throw + 43
    2   CoreFoundation                      0x00007fff856148dc +[NSException raise:format:] + 204
    3   CoreFoundation                      0x00007fff85613520 -[__NSCFString replaceOccurrencesOfString:withString:options:range:] + 224
    4   Foundation                          0x00007fff8d433a12 -[NSString stringByReplacingOccurrencesOfString:withString:options:range:] + 170
    5   tester                              0x00000001000019a1 deleteWithSubstring + 865
    6   tester                              0x0000000100001d35 main + 133
    7   libdyld.dylib                       0x00007fff89e267e1 start + 0
    8   ???                                 0x0000000000000001 0x0 + 1
)
libc++abi.dylib: terminate called throwing an exception....

这是我的密码

NSString* deleteWithSubstring(NSString *s1,NSString *sub)
{
    long int length=[sub length],range=0;
    NSRange r;
    for(int i=0;i<length;i++)
    {
        range=[s1 rangeOfString:[NSString stringWithFormat:@"%c",[sub characterAtIndex:i]]options:NSCaseInsensitiveSearch range:NSMakeRange(range,[s1 length]-1)].location;


        r=NSMakeRange(range,[s1 length]-1);
        NSLog(@"%ld %ld",r.location,r.length);
       if(range!=NSNotFound)
       {
           s1=[s1 stringByReplacingOccurrencesOfString:[NSString stringWithFormat:@"%c",[sub characterAtIndex:i]] withString:@" " options:NSCaseInsensitiveSearch range:r];
       }
    }
    s1=[s1 stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
    return s1;
}

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

    @autoreleasepool {


        NSString *str1,*str2;
        str1=@"Hdida";
        str2=@"fHsdai";

        NSLog(@"Loc B:%@ ",,deleteWithSubstring(str2,@"ha"));


    }
    return 0;
}

NSString*deleteWithSubstring（NSString*s1，NSString*sub）
{
长整型长度=[子长度]，范围=0；
NSRange；
对于（int i=0；i请尝试以下代码

NSString* deleteWithSubstring(NSMutableString *s1,NSString *sub)
{

    NSRange r;
    for(int i = 0; i < [s1 length]; i++)
    {
        //findout the range with "sub" string
        r = [s1 rangeOfString:sub options:NSCaseInsensitiveSearch];

        if(r.location != NSNotFound)
        {
            //Delete the characters in that range
            [s1 deleteCharactersInRange:r];
        }
        else
        {
            //break the loop if sub string not found as there is no more recurrence.
            break;
        }
    }
    return s1;
}

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

    @autoreleasepool {
        //initiating str1 here
        NSMutableString* str1 = [[NSMutableString alloc] init];
        [str1 appendString:@"fHsdaihati"];

        NSLog(@"Loc B:%@ ",deleteWithSubstring(str1,@"ha"));
    }
    return 0;
}

NSString*deleteWithSubstring（NSMutableString*s1，NSString*sub）
{
NSRange；
对于（int i=0；i<[s1长度]；i++）
{
//用“sub”字符串查找范围
r=[s1 rangeOfString:子选项：NSCaseInsensitiveSearch]；
if（r.location！=NSNotFound）
{
//删除该范围内的字符
[s1 deleteCharactersRange:r]；
}
其他的
{
//如果未找到子字符串，则中断循环，因为不再重复。
打破
}
}
返回s1；
}
int main（int argc，char*argv[]）
{
@自动释放池{
//在这里启动str1
NSMutableString*str1=[[NSMutableString alloc]init]；
[str1 appendString:@“fHsdaihati”]；
NSLog（@“Loc B:%@”，删除子字符串（str1，@“ha”）；
}
返回0；
}
我已经找到了解决方案..以上解释感谢您的帮助：-）使用您当前的代码，您想做什么？只是为了消除崩溃问题？还是从str1中删除子字符串？如果我将fHsdaihati作为str1传递，我从deleteWithSubstring方法中获得“fsdihati”。这是您想要的结果吗？因为仍然存在“ha”它上的子字符串（fsdihati）
NSString* deleteWithSubstring(NSMutableString *s1,NSString *sub)
{

    NSRange r;
    for(int i = 0; i < [s1 length]; i++)
    {
        //findout the range with "sub" string
        r = [s1 rangeOfString:sub options:NSCaseInsensitiveSearch];

        if(r.location != NSNotFound)
        {
            //Delete the characters in that range
            [s1 deleteCharactersInRange:r];
        }
        else
        {
            //break the loop if sub string not found as there is no more recurrence.
            break;
        }
    }
    return s1;
}

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

    @autoreleasepool {
        //initiating str1 here
        NSMutableString* str1 = [[NSMutableString alloc] init];
        [str1 appendString:@"fHsdaihati"];

        NSLog(@"Loc B:%@ ",deleteWithSubstring(str1,@"ha"));
    }
    return 0;
}