将NSDictionary解析为具有自定义分隔符的字符串

Question

我有一个带有一些值的NSMutableDictionary，我需要将键和值连接成一个字符串，所以

> name = Fred
> password = cakeismyfavoritefood
> email = myemailaddress@is.short

变为name=Fred&password=cakeismyfavoritefood&email=myemailaddress@is.short

我该怎么做？有没有办法将NSDictionaries加入字符串？

Answer 1

您可以轻松地枚举字典键和对象：

NSMutableString *resultString = [NSMutableString string];
for (NSString* key in [yourDictionary allKeys]){
    if ([resultString length]>0)
       [resultString appendString:@"&"];
    [resultString appendFormat:@"%@=%@", key, [yourDict objectForKey:key]];
}

Answer 2

与Turning a NSDictionary into a string using blocks?

完全相同的问题

NSMutableArray* parametersArray = [[NSMutableArray alloc] init];
[yourDictionary enumerateKeysAndObjectsUsingBlock:^(id key, id obj, BOOL *stop) {
    [parametersArray addObject:[NSString stringWithFormat:@"%@=%@", key, obj]];
}];
NSString* parameterString = [parametersArray componentsJoinedByString:@"&"];
[parametersArray release];