getLanguages method return empty array

[davidgalarza]

🐛 Bug Report

Hi I was seeing this error for a long time on my sentry logs, when I reported it a time ago it was marked as related to another issue where was specified that issue happened when there aren't any tts engine installed on the device, but I was able to reproduce it my device and it had installed tts engine.

Reproduction steps

Here is my code

@override
void initState() {
    flutterTts.getLanguages.then((l) {
          this.langCodeSpeech = l.firstWhere((code) {
            return code.toString().startsWith(widget.courseLangCode);
          });
    });
}

This code is located on the init state of an screen I was trying my app on my personal phone opening the screen doing some actions and opening it again, it was working like a charm, but after some time it start to fail with the following exception.

D/TTS     (11483): getLanguages: Attempt to invoke interface method 'java.util.Iterator java.util.Set.iterator()' on a null object reference

I don't know If it is related to the time that I was using the app or it simple randomly happens, but when I restart my app it start to work again.

Device: Huawei P20 lite

Configuration

Version: 1.2.6

Platform:

• [ ] :iphone: iOS
• [ x] :robot: Android

[davidgalarza]

Any update? I had a lot of reports about that from my app users

[dlutton]

@davidgalarza is it only with the Huawei P20 lite device? There seems to be other reported issues related to Huawei devices. Do you have any additional logs?

[davidgalarza]

My device is Huawei 20 lite and I can confirm that it happened to me sometime, is not really common but it happens. The plugin is working great but sometimes I don't know why on my phone if start to fail.

The log when the plugin start to fail:

W/TextToSpeech(22296): getAvailableLanguages failed: not bound to TTS engine
D/TTS     (22296): getLanguages: Attempt to invoke interface method 'java.util.Iterator java.util.Set.iterator()' on a null object reference.
LANGS: [] // print of the returned Languages

When the plugin is working correctly the available languages on my phone are

LANGS: [ko-KR, mr-IN, ru-RU, zh-TW, hu-HU, th-TH, ur-PK, nb-NO, da-DK, tr-TR, et-EE, bs, sw, pt-PT, vi-VN, en-US, sv-SE, ar, su-ID, bn-BD, gu-IN, kn-IN, el-GR, hi-IN, fi-FI, km-KH, bn-IN, fr-FR, uk-UA, en-AU, nl-NL, fr-CA, sr, pt-BR, ml-IN, si-LK, de-DE, ku, cs-CZ, pl-PL, sk-SK, fil-PH, it-IT, ne-NP, hr, en-NG, zh-CN, es-ES, cy, ta-IN, ja-JP, sq, yue-HK, en-IN, es-US, jv-ID, la, id-ID, te-IN, ro-RO, ca, en-GB]

When I restart my app it start to works again.

Here are some statistic of this error reported by Sentry

Brand

Android version

Device models

Sorry I don't have more logs by now.