iOS 字符串截取,将字符串中用括号包含的内容去除

//去除字符串中用括号括住的位置
-(NSString *)handleStringWithString:(NSString *)str{

    NSMutableString * muStr = [NSMutableString stringWithString:str];
    while (1) {
        NSRange range = [muStr rangeOfString:@"("];
        NSRange range1 = [muStr rangeOfString:@")"];
        if (range.location != NSNotFound) {
            NSInteger loc = range.location;
            NSInteger len = range1.location - range.location;
            [muStr deleteCharactersInRange:NSMakeRange(loc, len + 1)];
        }else{
            break;
        }
    }

    return muStr;
}