Question

I am trying to post the data from iphone
for that use the code like this

 -(void)sendRequest

    {

        NSDate* date = [NSDate date];
        //Create the dateformatter object
        NSDateFormatter* formatter = [[[NSDateFormatter alloc] init] autorelease];
        //Set the required date format
        [formatter setDateFormat:@"yyyy-MM-dd HH:MM:SS"];
        //Get the string date
        NSString* str = [formatter stringFromDate:date];

        ; ****i am getting the  warning 'NSData' may not respond to '- autorelease]; 


        NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:request delegate:self];

        if (theConnection) {
            webData = [[NSMutableData data] retain];
            NSLog(@"%@",webData);

        }



}

And it get crash and show the -[NSConcreteMutableData setLength:]: message sent to deallocated instance 0xdde2760

this updata code

-(void)sendRequest

{

    NSDate* date = [NSDate date];
    //Create the dateformatter object
    NSDateFormatter* formatter = [[[NSDateFormatter alloc] init] autorelease];
    //Set the required date format
    [formatter setDateFormat:@"yyyy-MM-dd HH:MM:SS"];
    //Get the string date
    NSString* str = [formatter stringFromDate:date];



    if (theConnection) {
        webData = [[NSMutableData data] retain];
        NSLog(@"%@",webData);

    }

}

-(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response 
{   
    [webData setLength: 0]; 
} 

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

} 

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error 
{     
    [connection release];  
    [webData release]; 

} 

-(void)connectionDidFinishLoading:(NSURLConnection *)connection 
{      
    NSString *loginStatus = [[NSString alloc] initWithBytes: [webData mutableBytes] length:[webData length] encoding:NSUTF8StringEncoding]; 
    NSLog(@"%@",loginStatus);  
    [loginStatus release];           
    [connection release];  
    [webData release]; 
} 

Answer 1

You a having warning there because you are assigning object of class NSString to NSData, look here:

NSData *post = [NSString stringWithFormat:@"Token=%@&JourneyID=%@&JourneyName=%@&Locationname=%@&StartDate=%@&Distance=%@&ShareType=%@&LastSyncDate=%@",tokenapi,Journey_ID,Journey_Name,Location_Name,Start_Date,Dist,Share_type,str];

So first of all try to replace it with

NSString *post = [NSString stringWithFormat:@"Token=%@&JourneyID=%@&JourneyName=%@&Locationname=%@&StartDate=%@&Distance=%@&ShareType=%@&LastSyncDate=%@",tokenapi,Journey_ID,Journey_Name,Location_Name,Start_Date,Dist,Share_type,str];