I need to send an NSArray
to the server in the JSON
array format. How can I convert it to JSON
. This is a sample of my NSArray
that I have to pass.
array([0] => array('latitude'=>'10.010490',
'longitude'=>'76.360779',
'altitude'=>'30.833334',
'timestamp'=>'11:17:23',
'speed'=>'0.00',
'distance'=>'0.00');
[1] => array('latitude'=>'10.010688',
'longitude'=>'76.361378',
'altitude'=>'28.546305',
'timestamp'=>'11:19:26',
'speed'=>'1.614',
'distance'=>'198.525711')
)`
and the required format is like this
[
{ "latitude":"10.010490",
"longitude":"76.360779",
"altitude":"30.833334",
"timestamp":"11:17:23",
"speed":"0.00",
"distance":"0.00"
},
{
"latitude":"10.010688",
"longitude":"76.361378",
"altitude":"28.546305",
"timestamp":"11:19:26",
"speed":"1.614",
"distance":"198.525711"
}
]
Any one have solution? Thanks in advance.
NSDictionary *firstJsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
@"10.010490", @"latitude",
@"76.360779", @"longitude",
@"30.833334", @"altitude",
@"11:17:23", @"timestamp",
@"0.00", @"speed",
@"0.00", @"distance",
nil];
NSDictionary *secondJsonDictionary = [NSDictionary dictionaryWithObjectsAndKeys:
@"10.010490", @"latitude",
@"76.360779", @"longitude",
@"30.833334", @"altitude",
@"11:17:23", @"timestamp",
@"0.00", @"speed",
@"0.00", @"distance",
nil];
NSMutableArray * arr = [[NSMutableArray alloc] init];
[arr addObject:firstJsonDictionary];
[arr addObject:secondJsonDictionary];
NSData *jsonData2 = [NSJSONSerialization dataWithJSONObject:arr options:NSJSONWritingPrettyPrinted error:&error];
NSString *jsonString = [[NSString alloc] initWithData:jsonData2 encoding:NSUTF8StringEncoding];
NSLog(@"jsonData as string:\n%@", jsonString);
The simplest and best approach !!!
To convert NSArray or NSMutableArray into jsonString you can first convert it into NSData and then further convert that into a NSString. Use this code
NSData* data = [ NSJSONSerialization dataWithJSONObject:yourArray options:NSJSONWritingPrettyPrinted error:nil ];
NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
It helped me and hope it helps you as well. All the best.
I would recommend the SBJson-Framework.
Converting an NSMutableArray
is as simple as NSString *jsonString = [yourArray JSONRepresentation];
Edit: Jack Farnandish is right u have to transform it into a NSDictionary before you can convert it to Json. In my example the NSMutableArray has to contain the Dictionary. The Array is only needed to create the square brackets at the beginning and the end of the string.
You can use the build in JSON functions of iOS or use an external lib e.g. JSONKit to convert your data to JSON
First You must change you structure into NSDictionary
class and NSArray
containing NSDictionary
objects, then try JSONKit in iOS 5 serialization works better than standard NSJSONSerialization
.
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