Objective-C

Upload String to Dropbox

See more Dropbox Examples

Uploads a string to a file on Dropbox. This example can upload content up to 150MB, assuming a 150MB string fits in memory for your app. Larger files must be uploaded with an upload session (upload_session/start). Objective-C

#import <CkoRest.h>
#import <NSString.h>
#import <CkoJsonObject.h>
#import <CkoDateTime.h>
#import <CkoDtObj.h>

BOOL success = NO;

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

//  A Dropbox access token should have been previously obtained.
//  Dropbox access tokens do not expire.
//  See Dropbox Access Token.

CkoRest *rest = [[CkoRest alloc] init];

//  Connect to Dropbox
success = [rest Connect: @"content.dropboxapi.com" port: [NSNumber numberWithInt: 443] tls: YES autoReconnect: YES];
if (success == NO) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

//  Add request headers.
[rest AddHeader: @"Content-Type" value: @"application/octet-stream"];
[rest AddHeader: @"Authorization" value: @"Bearer DROPBOX_ACCESS_TOKEN"];

//  The upload "parameters" contained in JSON passed in an HTTP request header.
//  This is the JSON to be added in this example:
//  { 
//     "path": "/jack.txt",
//     "mode": "add",
//     "autorename": true,
//     "mute": false
//  }

//  This will be the content of the file created in Dropbox.
NSString *content = @"All work and no play makes Jack a dull boy";

CkoJsonObject *json = [[CkoJsonObject alloc] init];
[json AppendString: @"path" value: @"/jack.txt"];
[json AppendString: @"mode" value: @"add"];
[json AppendBool: @"autorename" value: YES];
[json AppendBool: @"mute" value: NO];
[rest AddHeader: @"Dropbox-API-Arg" value: [json Emit]];

//  Do the upload.  The URL is https://content.dropboxapi.com/2/files/upload.
//  We already connected to content.dropboxapi.com using TLS (i.e. HTTPS),
//  so now we only need to specify the path "/2/files/upload".

NSString *responseStr = [rest FullRequestString: @"POST" uriPath: @"/2/files/upload" bodyText: content];
if (rest.LastMethodSuccess == NO) {
    NSLog(@"%@",rest.LastErrorText);
    return;
}

//  When successful, Dropbox responds with a 200 response code.
if ([rest.ResponseStatusCode intValue] != 200) {
    //  Examine the request/response to see what happened.
    NSLog(@"%@%d",@"response status code = ",[rest.ResponseStatusCode intValue]);
    NSLog(@"%@%@",@"response status text = ",rest.ResponseStatusText);
    NSLog(@"%@%@",@"response header: ",rest.ResponseHeader);
    NSLog(@"%@%@",@"response body (if any): ",responseStr);
    NSLog(@"%@",@"---");
    NSLog(@"%@%@",@"LastRequestStartLine: ",rest.LastRequestStartLine);
    NSLog(@"%@%@",@"LastRequestHeader: ",rest.LastRequestHeader);
    return;
}

NSLog(@"%@%@",@"LastRequestHeader: ",rest.LastRequestHeader);

//  The response is JSON.
CkoJsonObject *jsonResp = [[CkoJsonObject alloc] init];
jsonResp.EmitCompact = NO;
[jsonResp Load: responseStr];

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

//  Returns JSON that looks like this:
//  { 
//   "name": "jack.txt",
//   "path_lower": "/jack.txt",
//   "path_display": "/jack.txt",
//   "id": "id:yqx4-tE_NKAAAAAAAAAAAQ",
//   "client_modified": "2016-06-02T20:42:11Z",
//   "server_modified": "2016-06-02T20:42:11Z",
//   "rev": "8482db15f",
//   "size": 42
//  }

//  Sample code to get data from the JSON response:
int size = [[jsonResp IntOf: @"size"] intValue];
NSLog(@"%@%d",@"size = ",size);

NSString *rev = [jsonResp StringOf: @"rev"];
NSLog(@"%@%@",@"rev = ",rev);

NSString *clientModified = [jsonResp StringOf: @"client_modified"];
CkoDateTime *ckdt = [[CkoDateTime alloc] init];
[ckdt SetFromTimestamp: clientModified];
BOOL bLocalTime = YES;
CkoDtObj *dt = [[CkoDtObj alloc] init];
[ckdt ToDtObj: bLocalTime dtObj: dt];

NSLog(@"%d%@%d%@%d%@%d%@%d",[dt.Day intValue],@"/",[dt.Month intValue],@"/",[dt.Year intValue],@" ",[dt.Hour intValue],@":",[dt.Minute intValue]);