The following diagram shows the flow of control for interacting with a spelling checker service:įigure 3. However, you may want to interact directly with a spelling checker service in other cases as well. ItĪlso defines subtypes for the spelling checker in this case, the subtypes define locales thatĪccess the spell checker service from a clientĪpplications that use TextView views automatically benefit from spellĬhecking, because TextView automatically uses a spelling checker. The metadata specifies the activity that the spelling checker uses for controlling settings. The metadata file spellchecker.xml contains the following XML: The service's definition also specifies the spellchecker.xml metadataįile, which is described in the next section. Notice that components that want to use the service must request the permissionīIND_TEXT_SERVICE to ensure that only the system binds to Settings, as shown in the following snippet: The manifest file defines the application, the service, and the activity for controlling In addition to code, you need to provide the appropriate manifest file and a metadata file for SpellCheckerService.Session take care of this A spelling checker may be called simultaneously by different threads running onĭifferent cores. Note: You must implement all aspects of spell checking as asynchronous and Spell Checker Client sample app to learn more about implementing this class. OnGetSuggestionsMultiple(), which handles batches of word suggestion requests. OnGetSuggestions(), which handles a word suggestion request, or Handles requests to cancel spell checking, Suggestions for the sentences passed to it. SpellCheckerService.Session object based onĭoes the actual spell checking. Within this class, you must implement the The spelling checker and receive suggestions. Spell Checker Service sample app to learn more about implementing this class.Īn implementation of SpellCheckerService.SessionĪn object that the spelling checker service provides to clients, to let them pass text to Subclass, you must implement the following method: Service class and the spelling checker framework interface. The SpellCheckerService implements both the The spelling checker service, and add the appropriate elements to your manifest file.ĭefine the service and session object with the following classes: You must also add an XML metadata file that describes You can also add to your app an optional activity thatĬontrols settings. To use the spelling checker framework in your app, add a spelling checker service component including If necessary, yourĪpp can shut down the spelling checker service at any time. Spelling checker session from the service, then use the session to get suggestions for text.Īs a client terminates its operation, it closes its spelling checker session. Clients in your app, such as activities or individual UI elements, request a To initiate spell checking, your app starts its implementation of the spelling checker The following diagram shows the lifecycle of the spelling checker service:įigure 1. The session object returns spelling suggestions generated by the spelling checker. Generates a spelling checker session object. To use the framework in your app, you create a special type of Android service that Text Service APIs offered by the Android platform. The Android platform offers a spelling checker framework that lets you implementĪnd access spell checking in your application.
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