SpeechSynthesisInitialize (Function)

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Operating mode
Application in the background: Specific case from Android 10

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SpeechSynthesisInitialize (Function)

In french: SynthèseVocaleInitialise

Initializes the parameters of speech synthesis for the current application. You can initialize:

Only the language used (syntax 1).
All the voice characteristics via a SpeechSynthesisVoice variable (syntax 2).

Note: Use of SpeechSynthesisInitialize is not mandatory.. The default parameters will be used if SpeechSynthesisReadText or SpeechSynthesisReadFile is called while the parameters of speech synthesis have not been specified in SpeechSynthesisInitialize.

Example

IF NOT SpeechSynthesisInitialize(NationToLanguage(Nation())) THEN
	Error("Echec de l'initialisation de la synthèse vocale.", ErrorInfo())
END

Syntax

Initializing the language only Hide the details

<Result> = SpeechSynthesisInitialize(<Language> [, <Speed>])

<Result>: Boolean

True if the initialization was performed,
False in case of failure. In this case, the ErrorOccurred variable is set to True. To get more details on the error, use ErrorInfo.

<Language>: Integer or Integer constant

Language that will be used to read the text. If the specified language is not supported by the engine for speech synthesis, the function will return False and the first available language will be used according to the following sequence:
Language of the application (default language or language defined by Nation).
Language of the device
English
Default language of engine for speech synthesis.
0 to use the current application language.
The available constants are as follows:
languageAfrikaans Afrikaans
languageAlbanian Albanian
languageArabic Arabic
languageArmenian Armenian
languageBelarusian Belorussian
languageBengali Bengali
languageBulgarian Bulgarian
languageCatalan Catalan
languageChinese Chinese
languageCroatian Croatian
languageCzech Czech
languageDanish Danish
languageDutch Dutch
languageEnglish English
languageEstonian Estonian
languageFinnish Finnish
languageFrench French
languageGeorgian Georgian
languageGerman German
languageGreek Greek
languageHebrew Hebrew
languageHindi Hindi
languageHungarian Hungarian
languageIcelandic Icelandic
languageIndonesian Indonesian
languageItalian Italian
languageJapanese Japanese
languageKorean Korean
languageLatvian Latvian
languageLithuanian Lithuanian
languageMacedonian Macedonian
languageNorwegian Norwegian
languagePolish Polish
languagePortuguese Portuguese
languagePunjabi Punjabi
languageRomanian Romanian
languageRussian Russian
languageSerbian Serbian
languageSindhi Sindhi
languageSlovak Slovakian
languageSlovenian Slovenian
languageSpanish Spanish
languageSwedish Swedish
languageThai Thai
languageTurkish Turkish
languageUkrainian Ukrainian
languageUzbek Uzbek
languageVietnamese Vietnamese

<Speed>: Optional integer

Speed for reading the text, included between 0 (very slow) and 10 (very fast). If this parameter is not specified, its value will be set to 5 (average speed).

Initializing all the voice characteristics Hide the details

<Result> = SpeechSynthesisInitialize(<Voice> [, <Speed>])

<Result>: Boolean

True if the initialization was performed,
False in case of failure. In this case, the ErrorOccurred variable is set to True. To get more details on the error, use ErrorInfo.

<Voice>: SpeechSynthesisVoice variable

Name of the SpeechSynthesisVoice variable to be used for reading the text.

<Speed>: Optional integer

Speed for reading the text, included between 0 (very slow) and 10 (very fast). If this parameter is not specified, its value will be set to 5 (average speed).

Remarks

Operating mode

If no engine for speech synthesis is installed on the device, its download will be automatically proposed.
If the language to be used for speech synthesis is not the system language, this language must be specified in Android's "Text-to-speech Engine" settings. In "Language", replace "Use system language" with the desired language.
To synthesize a character string or a text file, use SpeechSynthesisReadText and SpeechSynthesisReadFile respectively.
Speech synthesis functions are only available on devices with Android 1.6 or higher (API level 4).
A fatal error occurs if the function is used with an earlier system version.
To determine the version of Android the application is running on, use SysAndroidVersion.
Speech synthesis functions are only available on devices with iOS 7 and higher. The speech synthesis does not work on the iOS 8 emulators.

Application in the background: Specific case from Android 10

Starting with Android 10, it is no longer possible to open a window when the application is in the background.

SpeechSynthesisInitialize can open a window. If this function is used while the application is in the background, a fatal error will occur.

Tips:

It is possible to determine if the application is in the background using InBackgroundMode.
If an application needs to interact with the user while it is in the background, the solution is to display a notification (via the Notification type). The application will be brought back to the foreground when the notification is clicked, if the ActivateApplication property is set to True. You can also open a window from the procedure passed to the ActionClick property.

For more details, see Android 10: Behavior of applications in the background.

Business / UI classification: UI Code

Component: wd300android.aar