iOs Environment Helper

EnvironmentHelper.h

//
//  Environment.h
//
//  Inspired by http://blog.carbonfive.com/2011/06/20/managing-ios-configurations-per-environment-in-xcode-4/
//

#import <Foundation/Foundation.h>


@interface EnvironmentHelper : NSObject

- (void)initializeSharedInstance;
//- (id)init;
- (NSString *)baseUrl;
- (NSString *)facebookId;

+ (EnvironmentHelper *)sharedInstance;

@end

EnvironmentHelper.m

//
//  Environment.m
//
//  Inspired by http://blog.carbonfive.com/2011/06/20/managing-ios-configurations-per-environment-in-xcode-4/
//

#import "EnvironmentHelper.h"


// Private Methods / Variables
@interface EnvironmentHelper()
@property (nonatomic, strong) NSString *baseUrl;
@property (nonatomic, strong) NSString *facebookId;
@property (nonatomic, strong) NSDictionary *config;
@end


// Public Methods / Variables
@implementation EnvironmentHelper

// List here all the environment data
@synthesize baseUrl = _baseUrl;
@synthesize facebookId = _facebookId;
static EnvironmentHelper *sharedInstance = nil;


/*
 * Assign environment values to the class variables
 * 1. Get environment name: Debug or Release
 * 2. Get the data of the specific environment dictionary
 * 3. Assign the value of the dictionary to the class variables
 */
- (void)initializeSharedInstance
{
    NSString* configuration = [[[NSBundle mainBundle] infoDictionary] objectForKey:@"Configuration"];
    NSLog(@"configuration: %@", configuration);
    NSBundle* bundle = [NSBundle mainBundle];
    NSString* envsPListPath = [bundle pathForResource:@"Environments" ofType:@"plist"];
    NSDictionary* environments = [[NSDictionary alloc] initWithContentsOfFile:envsPListPath];
    NSDictionary* environment = [environments objectForKey:configuration];
    self.baseUrl = [environment valueForKey:@"baseUrl"];
    self.facebookId = [environment valueForKey:@"facebookId"];
}


/*
 * Create an instance of the class and return it.
 * 1. Init the class
 * 2. Initialize the environment value
 * 3. Return object
 */
#pragma mark - Lifecycle Methods
+ (EnvironmentHelper *)sharedInstance
{
    @synchronized(self) {
        if (sharedInstance == nil) {
            sharedInstance = [[self alloc] init];
            [sharedInstance initializeSharedInstance];
        }
        return sharedInstance;
    }
}

@end

TestViewController.m

//
//  TestViewController.m
//

#import "AlbatrosViewController.h"
#import "EnvironmentHelper.h"

// Private methods, variables
@interface TestViewController ()

@end


// Publics methods, variables
@implementation TestViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    EnvironmentHelper *env = [EnvironmentHelper sharedInstance];
    NSLog(@"baseUrl = %@", env.baseUrl);
}

@end