A basic Salesforce OAuth login process using the Salesforce iOS SDK, implemented as a single standalone view controller

SFOAuthProcess

//
//  SFAuthDemoViewController.m
//
//  Created by Tim Duckett on 19/06/2013.
//  Copyright (c) 2013 Charismatic Megafauna Ltd. All rights reserved.
//

#import "SFAuthDemoViewController.h"
#import "SFAccountManager.h"
#import "SFRestAPI.h"
#import "SFRestAPI+Blocks.h"

static NSString *const kOAuthConsumerKey = @"<your OAuth consumer key>";
//static NSString *const OAuthRedirectURI = @"https://login.salesforce.com/services/oauth2/success";
static NSString *const kOAuthRedirectURI = @"https://salesforce.com/services/oauth2/success";
static NSString *const kOAuthLoginDomain = @"salesforce.com";
static NSString *const kUserAccountIdentifier = @"user";

@interface SFAuthDemoViewController () <SFOAuthCoordinatorDelegate>

@property (nonatomic, strong) SFOAuthCoordinator *coordinator;

@end

@implementation SFAuthDemoViewController


#pragma mark -
#pragma mark View lifecycle

- (void)viewDidLoad
{
    [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.
    
    [self setupCoordinator];
    [self setupAccountManager];

}

-(void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
}

-(void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

#pragma mark -
#pragma mark SFAccountManager configuration

-(void)setupAccountManager {
    [SFAccountManager setLoginHost:kOAuthLoginDomain];
    [SFAccountManager setClientId:kOAuthConsumerKey];
    [SFAccountManager setRedirectUri:kOAuthRedirectURI];
    [SFAccountManager setCurrentAccountIdentifier:kUserAccountIdentifier];
}

- (void)setupCoordinator {

    // create a new coordinator if one doesn't already exist
    if (!self.coordinator) {
        
        NSString *appName = [[[NSBundle mainBundle] infoDictionary] objectForKey:(NSString*)kCFBundleNameKey];
        NSString *loginDomain = kOAuthLoginDomain;
        NSString *accountIdentifier = kUserAccountIdentifier;
        
        NSString *fullKeychainIdentifier = [NSString stringWithFormat:@"%@-%@-%@",appName,accountIdentifier,loginDomain];

        SFOAuthCredentials *creds = [[SFOAuthCredentials alloc] initWithIdentifier:fullKeychainIdentifier
                                                                          clientId:kOAuthConsumerKey
                                                                         encrypted:NO];

        [creds setDomain:loginDomain];
        [creds setRedirectUri:kOAuthRedirectURI];
        
        self.coordinator = [[SFOAuthCoordinator alloc] initWithCredentials:creds];
        [self.coordinator setScopes:[NSSet setWithObjects:@"web",@"api",nil]];
        [self.coordinator setDelegate:self];
        
    }

}

#pragma mark -
#pragma mark SFOAuthDelegate methods

-(void) oauthCoordinator:(SFOAuthCoordinator *)coordinator didBeginAuthenticationWithView:(UIWebView *)view {
    [[self view] addSubview:view];
    [view setFrame:CGRectMake(0,0,self.view.frame.size.width, self.view.frame.size.height)];
}

- (void)oauthCoordinatorDidAuthenticate:(SFOAuthCoordinator *)coordinator {
    [coordinator.view removeFromSuperview];
    [[SFRestAPI sharedInstance] setCoordinator:coordinator];
    [SFAccountManager sharedInstance].credentials = coordinator.credentials;
}

-(void)oauthCoordinator:(SFOAuthCoordinator *)coordinator didFailWithError:(NSError *)error authInfo:(SFOAuthInfo *)info {
    [coordinator.view removeFromSuperview];
    NSLog(@"error = %@", error);
    NSLog(@"authInfo = %@", info);
}

#pragma mark -
#pragma mark Interaction methods

- (IBAction)didTapCallApiButton:(id)sender {
    
    [[SFRestAPI sharedInstance] performSOQLQuery:@"SELECT id FROM Account" failBlock:^(NSError *error) {
        NSLog(@"Error = %@", error);
    } completeBlock:^(NSDictionary *dict) {
        NSLog(@"%@", dict);
    }];
    
}

- (IBAction)didTapLogoutButton:(id)sender {
    [self.coordinator revokeAuthentication];
}

-(IBAction)didTapLoginButton:(id)sender {
    [self.coordinator authenticate];
}

-(IBAction)didTapNextButton:(id)sender {
    AZFSecondViewController *secondViewController = [[AZFSecondViewController alloc] initWithNibName:@"AZFSecondViewController" bundle:nil];
    [self.navigationController pushViewController:secondViewController animated:YES];    
}

@end