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1. Overview
The definition of Application framework (and framework in general) is notoriously difficult to agree upon.For the moment we start with a Wikipedia definition:
“Application framework consists of a software framework used by software developers to implement the standard structure of an application”
Where software framework is defined like this:
“A software framework is an abstraction in which software providing generic functionality can be selectively changed by additional user-written code,thus
providing application-specific software. […] Software frameworks may include support programs, compilers, code libraries, tool sets, and application
programming interfaces (APIs) that bring together all the different components to enable development of a project or solution”
The GENIVI Reference Architecture works with two different approaches to developing applications, namely the Managed and the Native application type.
Most people associate Application Framework mostly with the solution for the Managed application category, which includes a well-defined and limited set
of application APIs and usually a constrained (“sandboxed”) execution environment.
Refer latest "Reference Architecture" document at the below link for more information on Applications FW , Native and Managed Applications, Application Life cycle
Reference Architecture (access requires Genivi Member Login)
1.1 Application Manager
The Application Manager component is a part of the Application Framework set of components, aimed at supporting Applications, "Apps", in a GENIVI setting.
An Application manager component is needed to manage the overall responsibilities of the application framework infrastructure. This includes, but is not limited to,
launching applications, restarting applications upon updates, controlling the privileges associated with the application in focus, e.g. speech context and access to audio focus, life-cycle of applications.
Below is the comparison study of API's belonging to App manager in Tizen and Apertis.
| Sl No. | Tizen Web API | Description | Tizen Native | Description | Apertis (formerly eCORE) | Description | Comments / Remarks |
|---|---|---|---|---|---|---|---|
| 1 | getCurrentApplication | Gets the Application object defining the current application | CurrentActiveApp | Property update | |||
| 2 | kill | Kills an application with the specified application context ID. | Its not exposed to application but internal to the Application manager. | Don’t see the need | |||
| 3 | launch | Launches an application with the given application ID. | LaunchNewApp () | Launch an application from any other application | |||
| 4 | launchAppControl | Launches an application with the specified application control. | OpenURI() | This method is used to launch an application which handles the MIME type of the arguments. | |||
| 5 | findAppControl | Finds application information can be launched with the given application control. | AppLaunchDatabase | Takes the MIME type or URI and returns the list of apps that are capable of handling this type | |||
| 6 | getAppsContext | Gets a list of application contexts for applications that are currently running on a device. | Its not exposed to application but internal to the Application manager. | Don’t see the need | |||
| 7 | getAppContext | Gets the application context for the specified application context ID. | app_manager_get _app_context | Gets the application context for the given ID of the application. | Its not exposed to application but internal to the Application manager. | Don’t see the need | |
| 8 | getAppsInfo | Gets the list of installed application's information on a device. | Its not exposed to application but internal to the Application manager. | A complete list of apps is not provided | |||
| 9 | getAppInfo | Gets application information for a specified application ID. | GetApplicationInfo | Returns manifest info to the calling process | |||
| 10 | getAppSharedURI | Gets URI of read-only shared directory of application for a specified application ID. | Not yet implemented | ||||
| 11 | getAppMetaData | Gets application meta data array for a specified application ID. | Not clear if this is different from GetAppInfo | ||||
| 12 | addAppInfoEventListener | Adds a listener for receiving any notification for changes in the list of the installed applications on a device. | Not implemented yet | ||||
| 13 | removeAppInfoEvent Listener | Removes the listener to stop receiving notifications for changes on the list of installed applications on a device. | Not implemented yet | ||||
| 14 | GetGlobalSearchApps | Global search is distributed over all apps. This API gives a list of apps that are supporting global search | |||||
| 15 | RegisterMyApp | All applications register to application manager | |||||
| 16 | SetUninstalledApplication | AppStore :Set the application manifest name which isuninstalled. | |||||
| 17 | InsertNewEntry | AppStore :Launcher displays categories of applications and the list of applications in each category. | |||||
| 18 | SetInstalledApplication Manifest | AppStore :Set the manifest file of the installed application. | |||||
| 20 | |||||||
| 21 | "signal: AppLaunchDatabase Update " | This signal indicates an update of the database | |||||
| 24 | app_manager_foreach _app_context | Retrieves all application contexts of running applications. | |||||
| 25 | app_manager_foreach _app_info | Retrieves all installed applications information. | |||||
| 26 | int app_manager_get _app_id | Gets the ID of the application for the given process ID. | |||||
| 27 | app_manager_get_ external_shared_ data_path | Gets the absolute path to the shared data directory of the application specified with an application ID. | |||||
| 28 | app_manager_get_ shared_ resource_path | ||||||
| 29 | int app_manager_is _running | Checks whether the application with the given package name is running. | |||||
| 30 | int app_manager_ resume_app | Resumes the application. | |||||
| 31 | Many API's wrt Application context | https://developer.tizen.org /dev-guide/2.3.0 /org.tizen.mobile.native .apireference /group_CAPIAPP_ CONTEXT__MODULE.html | |||||
| 32 | Many Api's wrt Application information | https://developer.tizen.org /dev-guide/2.3.0 /org.tizen.mobile. native.apireference /group_CAPI_APP _INFO_MODULE.html |
1.2 App Manifest
Manifest contains App meta data. some of the information will help to determine is this App compatible/installable on a particular device.
It contains App info, permission, license, dependencies, services that are mandatory for the proper operation of the App, mime types , version and so on.
App manifest comparative study of Tizen and Apertis.
| Sl No | Apertis (formerly eCORE) | Description | Tizen | Description | Comments / Remarks |
|---|---|---|---|---|---|
| 1 | app-name | Audio-Player' | ui-application appid | ||
| 2 | working-directory | /usr/Applications/AudioPlayer/' | |||
| 3 | exec-path | /usr/Applications/AudioPlayer/bin/ mrs_audio_player' | ui-application exec | Application executable file path. | |
| 4 | background-state | killed' | |||
| 5 | exec-type | application' | ui-application | service app/ui app | |
| 6 | category | M U S I C' | ui-application | ||
| 7 | category-icon | /icon_music_AC.png' | ui-application | ||
| 8 | application-entry-names | 'A R T I S T S','A L B U M S','S O N G S' | |||
| 9 | application-entry-icons | 'file:///usr/Applications/Launcher/share/icon _music_artists_AC.png','file:///usr/ Applications/Launcher/share/icon_ music_albums_AC.png','file:///usr/ Applications/Launcher/share/icon _music_songs_AC.png' | |||
| 10 | tile-thumbnails | '### UNKNOWN ###','### UNKNOWN ###','### UNKNOWN ###' | |||
| 11 | exec-args | ('app-name','Audio-Player'), ('menu-entry','A R T I S T S'),('url',' ') | |||
| 12 | env-key-value-pair | 'key1','value1' | metadata | ||
| 13 | mime-type | [] | app-control | mime type | |
| 14 | mime-list | [] | |||
| 15 | audio-channel-name | mrs_audio_service' | |||
| 16 | audio-resource-owner | Audio-Agent-Service' | |||
| 17 | audio-resource-type | music' | |||
| 18 | datacontrol access | ||||
| 19 | account | account provider, icon , lang, capability, | |||
| 20 | Previleges | ||||
| 21 | Feature | ||||
| 22 | ui-application | ||||
| 23 | multiple | ||||
| 24 | nodisplay | ||||
| 25 | taskmanager | ||||
| 26 | type | ||||
| 27 | auto-restart | ||||
| 28 | on-boot |
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