SnipsPlatformClient crashes on android without TTS package installed

[lhucinequr]

Here is the relevant stacktrace
11:32:02.832 10831-10831/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: pro.i_surveillance.comfort_life_poc, PID: 10831
java.lang.RuntimeException: Unable to start activity ComponentInfo{pro.i_surveillance.comfort_life_poc/pro.i_surveillance.comfort_life_poc.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.speech.tts.TextToSpeech.setOnUtteranceProgressListener(android.speech.tts.UtteranceProgressListener)' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2946)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3046)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1688)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6809)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.speech.tts.TextToSpeech.setOnUtteranceProgressListener(android.speech.tts.UtteranceProgressListener)' on a null object reference
at ai.snips.platform.TtsHandler.registerTtsUtteranceProgressListener(TtsHandler.kt:21)
at ai.snips.platform.TtsHandler.access$registerTtsUtteranceProgressListener(TtsHandler.kt:11)
at ai.snips.platform.TtsHandler$tts$1.onInit(TtsHandler.kt:14)
at android.speech.tts.TextToSpeech.dispatchOnInit(TextToSpeech.java:824)
at android.speech.tts.TextToSpeech.initTts(TextToSpeech.java:802)
at android.speech.tts.TextToSpeech.(TextToSpeech.java:733)
at android.speech.tts.TextToSpeech.(TextToSpeech.java:712)
at android.speech.tts.TextToSpeech.(TextToSpeech.java:696)
at ai.snips.platform.TtsHandler.(TtsHandler.kt:13)
at ai.snips.platform.SnipsPlatformClient.connect(SnipsPlatformClient.kt:173)

[thanksmister]

I would suggest testing that the user has TTS installed on the device before trying to initiate Snips as it's a requirement for the Android Snips SDK. The demo doesn't check, so it will crash, but if you were building your own application, then you could add the logic.