+ (NSDictionary*)getParamFromURL:(NSString*)str
{
    NSMutableDictionary *params = [[NSMutableDictionary alloc] init];
    NSString *url=str;
    NSArray *comp1 = [url componentsSeparatedByString:@"?"];
    NSString *query = [comp1 lastObject];
    NSArray *queryElements = [query componentsSeparatedByString:@"&"];
    for (NSString *element in queryElements) {
        NSArray *keyVal = [element componentsSeparatedByString:@"="];
        if (keyVal.count > 0) {
            NSString *variableKey = [keyVal objectAtIndex:0];
            NSString *value = (keyVal.count == 2) ? [keyVal lastObject] : nil;
            NSLog(@"%@ -> %@",variableKey,value);
            [params setValue:value forKey:variableKey];
        }
    }
    
    return [params copy];
}