Objective-C

Finnhub API - Get Stock Quote

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Demonstrates how to get a stock quote from the Finnhub API. Objective-C

#import <NSString.h>
#import <CkoHttp.h>
#import <CkoHttpRequest.h>
#import <CkoHttpResponse.h>
#import <CkoJsonObject.h>

BOOL success = NO;

// Replace with your actual Finnhub API key.
NSString *apiKey = @"YOUR_FINNHUB_API_KEY";
NSString *symbol = @"AAPL";

CkoHttp *http = [[CkoHttp alloc] init];

// This is the URL without params.
NSString *urlWithoutParams = @"https://finnhub.io/api/v1/quote";

CkoHttpRequest *req = [[CkoHttpRequest alloc] init];

// Add params that will be sent in the URL.
[req AddParam: @"symbol" value: symbol];
[req AddParam: @"token" value: apiKey];

req.HttpVerb = @"GET";

// Send the request to get the JSON response.
CkoHttpResponse *resp = [[CkoHttpResponse alloc] init];
success = [http HttpReq: urlWithoutParams request: req response: resp];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[resp GetBodyJson: json];

int statusCode = [resp.StatusCode intValue];
NSLog(@"%@%d",@"response status code: ",statusCode);

json.EmitCompact = NO;
NSLog(@"%@",[json Emit]);

// Sample result:

// {
//   "c": 248.8,
//   "d": -4.09,
//   "dp": -1.6173,
//   "h": 255.493,
//   "l": 248.07,
//   "o": 253.9,
//   "pc": 252.89,
//   "t": 1774641600
// }

if (statusCode == 200) {
    // Add the symbol to the top of the result.
    [json AddStringAt: [NSNumber numberWithInt: 0] name: @"symbol" value: symbol];

    // Rename members for clarification.
    [json Rename: @"c" newName: @"currentPrice"];
    [json Rename: @"d" newName: @"change"];
    [json Rename: @"dp" newName: @"percentChange"];
    [json Rename: @"h" newName: @"high"];
    [json Rename: @"l" newName: @"low"];
    [json Rename: @"o" newName: @"open"];
    [json Rename: @"pc" newName: @"prevClose"];
    [json Rename: @"t" newName: @"unixTime"];

    NSLog(@"%@",[json Emit]);

}
else {
    NSLog(@"%@",@"Failed");
}