Convert JSON into XML

bhavuk chawla

10 January 2017

Convert JSON into XML

If you want to convert the JSON data to XML as we see by iOS there is no by default feature to convert JSON into XML. I have created a method which will convert JSON into XML. The code is written in objective-c, if you want to use that code in swift you have created a class and put a function in that class. After that, you have to insert the .h file into the bridging header (#import “YourClass.h”). then call the method by using:-

let dict = ["yourJson" : signalName ] as [String : Any]
let xmlWriter1 = YourClass()
var xmlString = xmlWriter1.convertDictionary(toXML: dict, withStartElement: "HeaderName", isFirstElement: true)
print(xmlString!)

let dict = ["yourJson" : signalName ] as [String : Any]

let xmlWriter1 = YourClass()

var xmlString = xmlWriter1.convertDictionary(toXML: dict, withStartElement: "HeaderName", isFirstElement: true)

print(xmlString!)

Here is the code:

- (NSString*)convertDictionaryToXML:(NSDictionary*)dictionary withStartElement:(NSString*)startElement isFirstElement:(BOOL) isFirstElement
{
    NSMutableString *xml = [[NSMutableString alloc] initWithString:@""];
    NSArray *arr = [dictionary allKeys];
    if (isFirstElement)
    {
        [xml appendString:@"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"];
    }
    [xml appendString:[NSString stringWithFormat:@"<%@>\n", startElement]];
    for(int i=0; i < [arr count]; i++)
    {
        NSString *nodeName = [arr objectAtIndex:i];
        id` nodeValue = [dictionary objectForKey:nodeName];
        if([nodeValue isKindOfClass:[NSArray class]])
        {
            if([nodeValue count]>0)
            {
                for(int j=0;j<[nodeValue count];j++)
                {
                    id value = [nodeValue objectAtIndex:j];
                    if([value isKindOfClass:[NSDictionary class]])
                    {
                        [xml appendString:[self convertDictionaryToXML:value withStartElement:nodeName isFirstElement:NO]];
                    }
                }
            }
        }
        else if([nodeValue isKindOfClass:[NSDictionary class]])
        {
            [xml appendString:[self convertDictionaryToXML:nodeValue withStartElement:nodeName isFirstElement:NO]];
        }
        else
        {
//            if([nodeValue length]>0){
                [xml appendString:[NSString stringWithFormat:@"<%@>",nodeName]];
                [xml appendString:[NSString stringWithFormat:@"%@",[dictionary objectForKey:nodeName]]];
                [xml appendString:[NSString stringWithFormat:@"</%@>\n",nodeName]];
//            }
        }
    }
    [xml appendString:[NSString stringWithFormat:@"</%@>\n",startElement]];   
    NSString *finalxml=[xml stringByReplacingOccurrencesOfString:@"&" withString:@"&amp;"];  
    return finalxml;
}

- (NSString*)convertDictionaryToXML:(NSDictionary*)dictionary withStartElement:(NSString*)startElement isFirstElement:(BOOL) isFirstElement

{

NSMutableString *xml = [[NSMutableString alloc] initWithString:@""];

NSArray *arr = [dictionary allKeys];

if (isFirstElement)

{

[xml appendString:@"<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"];

}

[xml appendString:[NSString stringWithFormat:@"<%@>\n", startElement]];

for(int i=0; i < [arr count]; i++)

{

NSString *nodeName = [arr objectAtIndex:i];

id` nodeValue = [dictionary objectForKey:nodeName];

if([nodeValue isKindOfClass:[NSArray class]])

{

if([nodeValue count]>0)

{

for(int j=0;j<[nodeValue count];j++)

{

id value = [nodeValue objectAtIndex:j];

if([value isKindOfClass:[NSDictionary class]])

{

[xml appendString:[self convertDictionaryToXML:value withStartElement:nodeName isFirstElement:NO]];

}

else if([nodeValue isKindOfClass:[NSDictionary class]])

{

[xml appendString:[self convertDictionaryToXML:nodeValue withStartElement:nodeName isFirstElement:NO]];

}

else

{

// if([nodeValue length]>0){

[xml appendString:[NSString stringWithFormat:@"<%@>",nodeName]];

[xml appendString:[NSString stringWithFormat:@"%@",[dictionary objectForKey:nodeName]]];

[xml appendString:[NSString stringWithFormat:@"</%@>\n",nodeName]];

// }

}

[xml appendString:[NSString stringWithFormat:@"</%@>\n",startElement]];

NSString *finalxml=[xml stringByReplacingOccurrencesOfString:@"&" withString:@"&"];

return finalxml;

}