(Objective-C) Google Sheets - Update (Set Values in a Range)

Sets values in a range of a spreadsheet. This example will demonstrate by first getting a range, then changing some values in the JSON, and then HTTPS PUT the changes back to the Google Sheet.

Note: This example requires Chilkat v9.5.0.76 or greater.

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

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// This example uses a previously obtained access token having permission for the 
// Google Sheets scope.

// In this example, Get Google Sheets OAuth2 Access Token, the access
// token was saved to a JSON file.  This example fetches the access token from the file..
CkoJsonObject *jsonToken = [[CkoJsonObject alloc] init];
BOOL success = [jsonToken LoadFile: @"qa_data/tokens/googleSheets.json"];
if ([jsonToken HasMember: @"access_token"] == NO) {
    NSLog(@"%@",@"No access token found.");
    return;
}

CkoHttp *http = [[CkoHttp alloc] init];
http.AuthToken = [jsonToken StringOf: @"access_token"];

// First get the cells in the range A1:B5
[http SetUrlVar: @"range" value: @"Sheet1!A1:B5"];
[http SetUrlVar: @"spreadsheetId" value: @"1_SO2L-Y6nCayNpNppJLF0r9yHB2UnaCleGCKeE4O0SA"];
NSString *jsonResponse = [http QuickGetStr: @"https://sheets.googleapis.com/v4/spreadsheets/{$spreadsheetId}/values/{$range}"];
if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

NSLog(@"%@",jsonResponse);

CkoJsonObject *json = [[CkoJsonObject alloc] init];
json.EmitCompact = NO;
[json Load: jsonResponse];

// A sample response is shown below.

// {
//   "range": "Sheet1!A1:B5",
//   "majorDimension": "ROWS",
//   "values": [
//     [
//       "Item",
//       "Cost"
//     ],
//     [
//       "Wheel",
//       "$20.50"
//     ],
//     [
//       "Door",
//       "$15"
//     ],
//     [
//       "Engine",
//       "$100"
//     ],
//     [
//       "Totals",
//       "$135.50"
//     ]
//   ]
// }

// We're going to change the cost of the Engine to $120, and the Totals to $155.50

json.I = [NSNumber numberWithInt:3];
json.J = [NSNumber numberWithInt:1];
[json UpdateString: @"values[i][j]" value: @"$120"];
json.I = [NSNumber numberWithInt:4];
[json UpdateString: @"values[i][j]" value: @"$155.50"];

// Show the updated JSON.
NSLog(@"%@",[json Emit]);

// --------------------------------------------------------
// Note: This example requires Chilkat v9.5.0.76 or greater.
// --------------------------------------------------------

// Update the Google Sheet using a PUT request.
json.EmitCompact = YES;
NSString *urlToUpdate = @"https://sheets.googleapis.com/v4/spreadsheets/{$spreadsheetId}/values/{$range}?valueInputOption=USER_ENTERED";
NSString *xyz = [http QuickGetStr: urlToUpdate];
CkoHttpResponse *resp = [http PText: @"PUT" url: urlToUpdate textData: [json Emit] charset: @"utf-8" contentType: @"application/json" md5: NO gzip: NO];
if (http.LastMethodSuccess != YES) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

// Examine the response..
NSLog(@"%@%d",@"response status code = ",[resp.StatusCode intValue]);
NSLog(@"%@",@"response body:");
NSLog(@"%@",resp.BodyStr);

// A sample response body:

// {
//   "spreadsheetId": "1_SO2L-Y6nCayNpNppJLF0r9yHB2UnaCleGCKeE4O0SA",
//   "updatedRange": "Sheet1!A1:B5",
//   "updatedRows": 5,
//   "updatedColumns": 2,
//   "updatedCells": 10
// }