converting nsMutablestring to nsdata in ios

Question

I'm new to the iOS development I'm trying to convert the append in NSdata but I'm unable to do that conversion I have tried some codes. In my Nsmutable String I have a url link which have the video I'm passing the string form json so now I want to append with the NSdata to display that video url

this is code for the NSmutablesring which pass the url link

-(void)setDataSource:(vedios *)inVideosObj
{

    self.titile.text = inVideosObj.title;

    url =[NSURL URLWithString:inVideosObj.video];
    NSURLRequest *request =[NSURLRequest requestWithURL:url];
    connection =[[NSURLConnection alloc] initWithRequest:request delegate:self];
    self.responseData = [[NSMutableString alloc]init];

}

NSMutablestring appeand coding:

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data;
{

    NSData *mydata =[self.responseData dataUsingEncoding:NSUTF16StringEncoding];

    [self.responseData appendString:data];



}

Answer 1

You are initialising responseData as a NSMutableString. Initialise it as a NSMutableData

@property (nonatomic, weak) NSMutableData * responseData;

now in

-(void)setDataSource:(vedios *)inVideosObj
{
    //Your work
    self.responseData = [NSMutableData alloc] init];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data;
{
    [self.responseData appendData: data];

}

then convert this self.responseData to NSString if you want..

NSString * responseString = [NSString alloc] initWithData: self.responseData encoding: NSUTF16StringEncoding]

Enjoy..!!

Answer 2

NSString to NSData

NSString* strResult = @"yourstring";
NSData* dataResult = [strResult dataUsingEncoding:NSUTF8StringEncoding];

NSData to NSMutableString

NSMutableString *jsonStr = [[NSMutableString alloc] initWithData:response encoding:NSUTF8StringEncoding];

NSLog(@"%@",jsonStr);