Error Handling

You can handle generic error situations in your application.

The Tizen API is mandatory for Tizen Mobile, Wearable, and TV profiles, which means that it is supported on all mobile, wearable, and TV devices. All mandatory APIs are supported on the Tizen emulators.

The main error handling features of the Tizen API include:

  • Exception handling

    You can enable the Tizen APIs to throw errors synchronously with the WebAPIException interface (in mobile, wearable, and TV applications), or return errors in the error event handlers of asynchronous methods with the WebAPIError interface (in mobile, wearable, and TV applications).

    Note
    Do not use the code attribute of the WebAPIException interface to distinguish errors, because the code of the exception object is set to 0 for new error types that are not defined in DOMException.

  • Generic event handling

    You can handle the results of asynchronous operations with generic events. The operations can implemented using the SuccessCallback (in mobile, wearable, and TV applications) and ErrorCallback (in mobile, wearable, and TV applications) event handlers of the Tizen API.

Using the Generic Event Handlers

Learning how to use generic, predefined event handlers allows you handle application operations and errors efficiently:

  1. The generic onSuccess() event handler of the SuccessCallBack interface (in mobile, wearable, and TV applications) can be used with methods that do not require a return value when successful.

    In this example, the event handler is used to stop a running application with the kill() method of the Application interface (in mobile, wearable, and TV applications).

    function onSuccess() {
    console.log('Application terminated successfully');
}

tizen.application.kill(ctxIDToKill, onSuccess);

  2. The generic onError() event handler of the ErrorCallBack interface (in mobile, wearable, and TV applications) can be used with methods that only require an error as an input parameter in the error callback.

    In this example, the event handler is used to handle possible errors with the getCalendars() method of the CalendarManager interface (in mobile and wearable applications).

    function errorCallback(error) {
    console.log('The following error occurred: ' + error.name);
}

tizen.calendar.getCalendars('EVENT', calendarListCallback, errorCallback);
  • Dependencies
    • Tizen 2.4 and Higher for Mobile
    • Tizen 2.3.1 and Higher for Wearable
    • Tizen 3.0 and Higher for TV
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