How to find Access token and Secret Key for Tumblr API in iOS

Hello everyone, I was working  one of iOS app in which need to upload some content on tumblr. However believe me it was not usually and easy task, which  we do some like in facebook and twitter. First we need to find Tumblr Access token and secret key using OAuth Library. I have tried couple of resources, however none of them was working correctly, Finally after lots of hard work, i found out one solution for getting values. So i decided to share with every developer so others can also take benefit of it.  Below are the steps which you need to follow. This a three step  tutorial, On Part 1 you will find the access token and secret key, On Part Second you will find user details like number of blogs and On Part Three posting images on tumblr api.

Right now please enjoy the part one, i will update rest of the part very soon.

1) Fire up XCode -> File -> NewProject -> SingleView Application, Give the app name and click on save

2) Drag and drop OAuthConsumer Folder into project

3) Create a new subclass of NSObject, i have named my class TumblrConnect and save the files into you project. Once you save, it will create two files TumblrConnect.h and TumblrConnect.m

4) Click on TumblrConnect.h and add the following lines of code

#import “OAConsumer.h”

#import “OAToken.h”

#import “OAMutableURLRequest.h”

#import “OADataFetcher.h”

static NSString* kMyApplicationConsumerKey = @””;   // ADD YOUR TUMBLR CONSUMER KEY

static NSString* kMyApplicationConsumerSecret = @””; // ADD YOUR TUMBLR CONSUMER SECRET KEY

@interface TumblrConnect : NSObject <UIWebViewDelegate> {

    OAConsumer* consumer;

    OAToken* requestToken;

    OAToken* accessToken;

}

-(void)connectTumblr;  

5) Now click on TumblrConnect.m and add the following lines of code

-(void)connectTumblr {

    consumer = [[OAConsumer alloc] initWithKey:kMyApplicationConsumerKey secret:kMyApplicationConsumerSecret];

    NSURL* requestTokenUrl = [NSURL URLWithString:@”http://www.tumblr.com/oauth/request_token”%5D;

    OAMutableURLRequest* requestTokenRequest = [[[OAMutableURLRequest alloc] initWithURL:requestTokenUrl

                                                                                consumer:consumer

                                                                                   token:nil

                                                                                   realm:nil

                                                                       signatureProvider:nil] autorelease];

    OARequestParameter* callbackParam = [[[OARequestParameter alloc] initWithName:@”oauth_callback” value:@”tumblr://authorized”] autorelease];

    [requestTokenRequest setHTTPMethod:@”POST”];

    [requestTokenRequest setParameters:[NSArray arrayWithObject:callbackParam]];

    OADataFetcher* dataFetcher = [[[OADataFetcher alloc] init] autorelease];

    [dataFetcher fetchDataWithRequest:requestTokenRequest

                             delegate:self

                    didFinishSelector:@selector(didReceiveRequestToken:data:)

                      didFailSelector:@selector(didFailOAuth:error:)];

}

– (void)didReceiveRequestToken:(OAServiceTicket*)ticket data:(NSData*)data {

    NSString* httpBody = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease];

    requestToken = [[OAToken alloc] initWithHTTPResponseBody:httpBody];

    NSURL* authorizeUrl = [NSURL URLWithString:@”https://www.tumblr.com/oauth/authorize”%5D;

    OAMutableURLRequest* authorizeRequest = [[[OAMutableURLRequest alloc] initWithURL:authorizeUrl

                                                                             consumer:nil

                                                                                token:nil

                                                                                realm:nil

                                                                    signatureProvider:nil] autorelease];

    NSString* oauthToken = requestToken.key;

    OARequestParameter* oauthTokenParam = [[[OARequestParameter alloc] initWithName:@”oauth_token” value:oauthToken] autorelease];

    [authorizeRequest setParameters:[NSArray arrayWithObject:oauthTokenParam]];

    UIWebView* webView = [[UIWebView alloc] initWithFrame:[UIScreen mainScreen].bounds];

    webView.scalesPageToFit = YES;

    [[[UIApplication sharedApplication] keyWindow] addSubview:webView];

    [webView release];

    webView.delegate = self;

    [webView loadRequest:authorizeRequest];

}

– (void)didReceiveAccessToken:(OAServiceTicket*)ticket data:(NSData*)data {

    AppDelegate *delegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];

    NSString* httpBody = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease];

    accessToken = [[OAToken alloc] initWithHTTPResponseBody:httpBody];

    NSString *OAuthKey = accessToken.key;    // HERE YOU WILL GET ACCESS TOKEN

    NSString *OAuthSecret = accessToken.secret;  //HERE  YOU WILL GET SECRET TOKEN

}

– (void)didFailOAuth:(OAServiceTicket*)ticket error:(NSError*)error {

    // ERROR!

}

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

#pragma mark UIWebViewDelegate

– (BOOL)webView:(UIWebView*)webView shouldStartLoadWithRequest:(NSURLRequest*)request navigationType:(UIWebViewNavigationType)navigationType {

    if ([[[request URL] scheme] isEqualToString:@”tumblr”]) {

        // Extract oauth_verifier from URL query

        NSString* verifier = nil;

        NSArray* urlParams = [[[request URL] query] componentsSeparatedByString:@”&”];

        for (NSString* param in urlParams) {

            NSArray* keyValue = [param componentsSeparatedByString:@”=”];

            NSString* key = [keyValue objectAtIndex:0];

            if ([key isEqualToString:@”oauth_verifier”]) {

                verifier = [keyValue objectAtIndex:1];

                break;

            }

        }

        if (verifier) {

            NSURL* accessTokenUrl = [NSURL URLWithString:@”https://www.tumblr.com/oauth/access_token”%5D;

            OAMutableURLRequest* accessTokenRequest = [[[OAMutableURLRequest alloc] initWithURL:accessTokenUrl

                                                                                       consumer:consumer

                                                                                          token:requestToken

                                                                                          realm:nil

                                                                              signatureProvider:nil] autorelease];

            OARequestParameter* verifierParam = [[[OARequestParameter alloc] initWithName:@”oauth_verifier” value:verifier] autorelease];

            [accessTokenRequest setHTTPMethod:@”POST”];

            [accessTokenRequest setParameters:[NSArray arrayWithObject:verifierParam]];

            OADataFetcher* dataFetcher = [[[OADataFetcher alloc] init] autorelease];

            [dataFetcher fetchDataWithRequest:accessTokenRequest

                                     delegate:self

                            didFinishSelector:@selector(didReceiveAccessToken:data:)

                              didFailSelector:@selector(didFailOAuth:error:)];

        } else {

            // ERROR!

        }

        [webView removeFromSuperview]

        return NO;

    }

    return YES;

}

 – (void)webView:(UIWebView*)webView didFailLoadWithError:(NSError*)error {

    // ERROR!

}

6) Now we just need to call the above function, so click on ViewController.m file and please add the following lines of code in ViewDidLoad method

    TumblrConnect *tumConect = [[TumblrConnect alloc] init];

    [tumConect connectTumblr];

Thats the only thing we need to do and you will get the values, you can use that values for posting  images or text in Tumblr. If there is any issue please let me know, Feedback are always welcome. I will also share the source code very soon.

Cheers, Hope you will enjoy  this.