[iOS]拾遗补阙

来源：cnblogs　　作者：EverNight　　时间：2018/11/25 19:54:17　　对本文有异议

一、AFNetworking POST字符串

修改位置AFURLRequestSerialization

修改前

NSString * AFQueryStringFromParameters(NSDictionary *parameters) {
    NSMutableArray *mutablePairs = [NSMutableArray array];
    for (AFQueryStringPair *pair in AFQueryStringPairsFromDictionary(parameters)) {
        [mutablePairs addObject:[pair URLEncodedStringValue]];
    }
    return [mutablePairs componentsJoinedByString:@"&"];
}

修改后

NSString * AFQueryStringFromParameters(NSDictionary *parameters) {
    if ([parameters isKindOfClass:[NSString class]])
        return (NSString *)parameters;
    
    NSMutableArray *mutablePairs = [NSMutableArray array];
    for (AFQueryStringPair *pair in AFQueryStringPairsFromDictionary(parameters)) {
        [mutablePairs addObject:[pair URLEncodedStringValue]];
    }
    return [mutablePairs componentsJoinedByString:@"&"];
}

二、查找一个字符串中的多个相同子字符串

NSString *str = @"14 28 62 24 3 46 99 73 10 51 0 95 34 58 50 33 56 23 97 82 83 8 94 1 17 7 19 96 9 54";
NSString *searchString = @"1";
NSRange searchRange = NSMakeRange(0, [str length]);
NSRange range;
while ((range = [str rangeOfString:searchString options:0 range:searchRange]).location != NSNotFound)
{
    NSLog(@"%@",NSStringFromRange(range));
    
    searchRange = NSMakeRange(NSMaxRange(range), [str length] - NSMaxRange(range));
}