Modified the Application module. Removed the Application class and added its methods to the exports directly.

Application/application.android.ts

@@ -7,7 +7,7 @@ require("Utils/module_merge").merge(appModule, exports);
 var callbacks = android.app.Application.ActivityLifecycleCallbacks;
 
 var initEvents = function () {
-    var androidApp = appModule.current.android;
+    var androidApp = exports.android;
     var lifecycleCallbacks = new callbacks({
         onActivityCreated: function (activity: any, bundle: any) {
             if (!androidApp.startActivity) {
@@ -87,8 +87,7 @@ var initEvents = function () {
 
 export var init = function (nativeApp: android.app.Application) {
     var app = new AndroidApplication(nativeApp);
-    appModule.current.os = appModule.TargetOS.Android;
+    exports.android = app;
-    appModule.current.android = app;
     app.init();
 }
 

Application/application.d.ts

@@ -1,67 +1,42 @@
 /**
-* Defines the available target operating systems.
+* The main entry point event. This method is expected to return an instance of the root UI for the application.
+* This will be an Activity extends for Android and a RootViewController for iOS.
 */
-export declare enum TargetOS {
+export declare function onLaunch(): any;
-    /**
-    * iOS operating system.
-    */
-    iOS,
-
-    /**
-    * Android operating system.
-    */
-    Android
-}
 
 /**
-* The abstraction of an Application object, common for each target OS.
+* This method will be called when the Application is suspended.
 */
-export declare class Application {
+export declare function onSuspend();
-    /**
-    * The target operating system of the application.
-    */
-    public os: TargetOS;
 
-    /**
+/**
-    * The main entry point event. This method is expected to return an instance of the root UI for the application.
+* This method will be called when the Application is resumed after it has been suspended.
-    * This will be an Activity extends for Android and a RootViewController for iOS.
+*/
-    */
+export declare function onResume();
-    public onLaunch: () => any;
 
-    /**
+/**
-    * This method will be called when the Application is suspended.
+* This method will be called when the Application is about to exit.
-    */
+*/
-    public onSuspend: () => any;
+export declare function onExit();
 
-    /**
+/**
-    * This method will be called when the Application is resumed after it has been suspended.
+* This method will be called when there is low memory on the target device.
-    */
+*/
-    public onResume: () => any;
+export declare function onLowMemory();
 
-    /**
+/**
-    * This method will be called when the Application is about to exit.
+* This is the Android-specific application object instance.
-    */
+* Encapsulates methods and properties specific to the Android platform.
-    public onExit: () => any;
+* Will be undefined when TargetOS is iOS.
+*/
+export declare var android: AndroidApplication;
 
-    /**
+/**
-    * This method will be called when there is low memory on the target device.
+* This is the iOS-specific application object instance.
-    */
+* Encapsulates methods and properties specific to the iOS platform.
-    public onLowMemory: () => any;
+* Will be undefined when TargetOS is Android.
-
+*/
-    /**
+export declare var ios: iOSApplication;
-    * This is the Android-specific application object instance. 
-    * Encapsulates methods and properties specific to the Android platform.
-    * Will be undefined when TargetOS is iOS.
-    */
-    public android: AndroidApplication;
-
-    /**
-    * This is the iOS-specific application object instance.
-    * Encapsulates methods and properties specific to the iOS platform.
-    * Will be undefined when TargetOS is Android.
-    */
-    public ios: iOSApplication;
-}
 
 /**
 * The abstraction of an Android-specific application object.
@@ -148,8 +123,3 @@ export declare class iOSApplication {
 * Entry point for the module. Initializes the Application singleton and hooks application lifecycle events.
 */
 export declare function init(nativeApp: any);
-
-/**
-* The current singleton instance of the application object.
-*/
-export declare var current: Application;

Application/application.ios.ts

@@ -29,8 +29,7 @@ require("Utils/module_merge").merge(appModule, exports);
 // TODO: Declarations
 export var init = function (nativeApp: any) {
     var app = new iOSApplication(nativeApp);
-    appModule.current.os = appModule.TargetOS.iOS;
+    exports.ios = app;
-    appModule.current.ios = app;
     app.init();
 }
 
@@ -55,10 +54,8 @@ class iOSApplication {
                         this.window.backgroundColor = UIKit.UIColor.whiteColor();
                         this.window.makeKeyAndVisible();
 
-                        var iosApp = appModule.current.ios;
+                        if (appModule.onLaunch) {
-
+                            this.window.rootViewController = appModule.onLaunch();
-                        if (appModule.current.onLaunch) {
-                            this.window.rootViewController = appModule.current.onLaunch();
                         } else {
                             log("Missing TK.UI.Application.current.onLaunch");
                         }
@@ -69,8 +66,8 @@ class iOSApplication {
 
                     applicationDidBecomeActive: function (application) {
                         log("applicationDidBecomeActive: " + application);
-                        if (appModule.current.onResume) {
+                        if (appModule.onResume) {
-                            appModule.current.onResume();
+                            appModule.onResume();
                         }
                     },
 
@@ -80,8 +77,8 @@ class iOSApplication {
 
                     applicationDidEnterBackground: function (application) {
                         log("applicationDidEnterBackground: " + application);
-                        if (appModule.current.onSuspend) {
+                        if (appModule.onSuspend) {
-                            appModule.current.onSuspend();
+                            appModule.onSuspend();
                         }
                     },
 
@@ -91,15 +88,15 @@ class iOSApplication {
 
                     applicationWillTerminate: function (application) {
                         log("applicationWillTerminate: " + application);
-                        if (appModule.current.onExit) {
+                        if (appModule.onExit) {
-                            appModule.current.onExit();
+                            appModule.onExit();
                         }
                     },
 
                     applicationDidReceiveMemoryWarning: function (application) {
                         log("applicationDidReceiveMemoryWarning: " + application);
-                        if (appModule.current.onLowMemory) {
+                        if (appModule.onLowMemory) {
-                            appModule.current.onLowMemory();
+                            appModule.onLowMemory();
                         }
                     }
                 }

Application/application_common.ts

@@ -1,27 +1,23 @@
 import consoleModule = require("Console/console");
 
-export enum TargetOS {
+// TODO: This is put in the global context, is this the preferred approach
-    iOS,
+console = new consoleModule.Console();
-    Android
+
+export var onLaunch = function (): any {
 }
 
-export class Application {
+export var onSuspend = function (): void {
-    public os: TargetOS;
-
-    constructor() {
-        // TODO: This is put in the global context, is this the preferred approach
-        console = new consoleModule.Console();
-    }
-
-    public onLaunch: () => any;
-    public onSuspend: () => any;
-    public onResume: () => any;
-    public onExit: () => any;
-    public onLowMemory: () => any;
-
-    // TODO: These fields are declared by the application.d.ts file and intellisense will come from there
-    public android: any;
-    public ios: any;
 }
 
-export var current = new Application();
+export var onResume = function (): void {
+}
+
+export var onExit = function (): void {
+}
+
+export var onLowMemory = function (): void {
+}
+
+export var android = undefined;
+
+export var ios = undefined;

Camera/camera.android.ts

@@ -6,7 +6,7 @@ var REQUEST_SELECT_PICTURE: number = 2;
 export class CameraManager {
     public takePicture(params: any, onSuccess: (imageData: any) => any, onError?: (error: any) => any) {
         var takePictureIntent = new android.content.Intent('android.media.action.IMAGE_CAPTURE');
-        var androidApp = appModule.current.android;
+        var androidApp = appModule.android;
 
         if (takePictureIntent.resolveActivity(androidApp.context.getPackageManager()) !== null) {
             androidApp.currentActivity.startActivityForResult(takePictureIntent, REQUEST_IMAGE_CAPTURE);
@@ -16,7 +16,7 @@ export class CameraManager {
     // options { useSavedPhotos: true }
     public pictureFromLibrary(params: any, onSuccess: (imageData: any) => any, onError?: (error: any) => any) {
         var readPictureIntent = new android.content.Intent();
-        var androidApp = appModule.current.android;
+        var androidApp = appModule.android;
 
         readPictureIntent.setType('image/*');
         readPictureIntent.setAction('android.intent.action.GET_CONTENT');

FileSystem/file_system_access.android.ts

@@ -207,13 +207,13 @@ export class FileSystemAccess {
     }
 
     public getDocumentsFolderPath(): string {
-        var context = appModule.current.android.context;
+        var context = appModule.android.context;
         var dir = context.getFilesDir();
         return dir.getAbsolutePath();
     }
 
     public getTempFolderPath(): string {
-        var context = appModule.current.android.context;
+        var context = appModule.android.context;
         var dir = context.getCacheDir();
         return dir.getAbsolutePath();
     }

Image/image.android.ts

@@ -13,7 +13,7 @@ export class Image {
     }
 
     public loadFromResource(name: string): boolean {
-        var androidApp = appModule.current.android;
+        var androidApp = appModule.android;
         var res = androidApp.context.getResources();
         if (res) {
             var identifier: number = res.getIdentifier(name, 'drawable', androidApp.packageName);

Location/location.android.ts

@@ -59,7 +59,7 @@ export class LocationManager {
     public static isEnabled(): boolean {
         var criteria = new android.location.Criteria();
         criteria.setAccuracy(1); // low ? fine ? who knows what 1 means (bug in android docs?)
-        var lm = appModule.current.android.context.getSystemService(android.content.Context.LOCATION_SERVICE);
+        var lm = appModule.android.context.getSystemService(android.content.Context.LOCATION_SERVICE);
         return (lm.getBestProvider(criteria, true) != null) ? true : false;
     }
 
@@ -80,7 +80,7 @@ export class LocationManager {
         this.minimumUpdateTime = 200;
         this.isStarted = false;
 
-        this.androidLocationManager = appModule.current.android.context.getSystemService(android.content.Context.LOCATION_SERVICE);
+        this.androidLocationManager = appModule.android.context.getSystemService(android.content.Context.LOCATION_SERVICE);
     }
 
     ////////////////////////

UserPreferences/user_preferences.android.ts

@@ -5,7 +5,7 @@ export class UserPreferences {
     private sharedPreferences: any;
 
     constructor() {
-        this.sharedPreferences = appModule.current.android.context.getSharedPreferences("prefs.db", 0);
+        this.sharedPreferences = appModule.android.context.getSharedPreferences("prefs.db", 0);
     }
 
     public containsKey(key: string): boolean {

http/http_request.android.ts

@@ -11,7 +11,7 @@ export function request(options: http.HttpRequestOptions): promises.Promise<http
 
         var isImage = options.url.match(/\.(jpeg|jpg|gif|png)$/i) != null;
 
-        var context = require("Application/application").Application.current.android.context;
+        var context = require("Application/application").android.context;
 
         if (isImage && options.method && options.method.toLowerCase() == "get") {
             var request = com.koushikdutta.ion.Ion.with(context, options.url);