Basically there is a list of customer mobile numbers I like to call and play a recorded audio message. SMS is not an option. I was shocked to see that android does not support this and there is not much help available online regarding this. Any clues of how this would be accomplished? Will I need any specific hardware and/or software for this?
Check http://vicidial.org
Unfortanly you need voip account and linux server for that
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I can not find any information anywhere on the net, not even in Google Documentation about controlling our self developed android app by voice without having to tap a GUI element previously.
We successfully implemented voice control into our app, but for the app to start listening, I have to tap a microphone icon on the GUI.
I want our app listening all the time and if I say a specific command like "Hey MyApp!" (Like Hey Google) then the app knows that it needs to listen for my command.
Is it possible?
I found this:
https://developer.android.com/training/wearables/user-input/voice
And this:
https://developer.android.com/guide/app-actions/overview
And this:
https://support.google.com/accessibility/android/answer/6151848?hl=en
But none of them explaining things in a way that I understand if it's possible or not. English is my third language and I am not a programmer, but a designer.
Our programmers are also not experienced in this field.
Thanks for answers in advance.
Is it possible?
That depends.
If you are building your own custom hardware with its own custom build of Android on it, then yes.
If not, and you literally want what you are asking ("I want our app listening all the time and if I say a specific command like "Hey MyApp!" (Like Hey Google) then the app knows that it needs to listen for my command"), then no. You cannot even have your app running all the time, let alone with the microphone active. You also would need to have your plans reviewed by qualified legal counsel, as continuously monitoring everything said on the microphone will have ramifications.
If you are planning on distributing your app via the Play Store, and you are willing to be more flexible in your requirements, you could integrate with Google Assistant, per one of the documents that you linked to. Google Assistant can then launch your app if/when needed based on an app action triggered by user speech.
My goal is to develop an Android app to record telephone call audio (incoming and outgoing calls). Not VoIP, not SIP, not anything else.
IMPORTANT: I will not create an app that relies on workarounds, rooting devices and/or hack it in any way, shape or form.
Surely enough, I also expect to sell this app on Google Play store. In other words: all by the book.
As far as I learned from the documentation (https://developer.android.com), the way to capture phone call audio is by using MediaRecorder with audioSource set to VOICE_CALL. This audio source requires permission "android.permission.CAPTURE_AUDIO_OUTPUT", which in turn is "reserved for use by system components and is not available to third-party applications.".
On the other hand, I also did my research in forums like this. Unfortunately and recpectfully, all of the "solutions" were, in fact, workarounds. Other than that I have found some people stating that the lack of API support was deliberately by design and that kind of app functionality is forbidden by Google. Though, no official references were provided to support those claims.
At this point, looks like it can't be done.
Before giving up, I would like to ask the following:
If It's really by design and forbidden to record phone calls, could you point out where, exactly, in some official documentation and/or some reliable source (like... android team, for instance) that explicitly validates those claims?
Kind regards,
Juan Soria
Is it possible to just have our Android app answer the question to only our Alexa custom skill and not have the entire default behavior of Echo? For example: I created a custom skill, say, calculate Can I make an android app which uses Alexa Voice service API to answer the questions only related to calculate and no other questions? (i.e. no default behavior like weather, music)
Why does the example on developer documentation app say "companion app"? Do I need Echo to use it? Can I not make an app which will answer questions but does not require echo?
Is it possible to get text and audio both as output using Alexa API?
I appreciate any input. Any links and references are welcome.
The benefit of Alexa is it's voice recognition abilities, and the ability to choose an appropriate intent based on a voice interaction. If the skill is written with clearly defined intents Alexa will be able to respond as you wanted. It may be that "Calculate..." might be too vague an intent for Alexa to differentiate.
Also, the useful bit is the skill you build. You define how things are calculated, and what answer to give. Unless you are trying to leverage the voice recognition and AI you might be better off going with some other technology (and if you need those things, then maybe WitAI might be more useful to you: https://wit.ai/ it's a little more roll-your-own than Alexa).
Alexa Voice Services (AVS) is available in the US, but not yet the UK or Germany until 2017 (and who know's when for other markets). AVS can be added physical devices that have a speaker and microphone, so it is possible to use Alexa without using an Echo or Echo Dot.
At it's core, the input and output of Alexa apps are JSON (so text). Alexa parses the text response and speaks the appropriate part. I'm not sure that you can route this response in some other way than having it spoken. However, in between the request and response is the Lambda function (or native device function), so in addition to generating the response to Alexa, you could dump the response somewhere else at the same time that would be available outside of Alexa.
Is it possible to just have our Android app answer the question to only our Alexa custom skill and not have the entire default behavior of Echo? For example: I created a custom skill, say, calculate Can I make an android app which uses Alexa Voice service API to answer the questions only related to calculate and no other questions? (i.e. no default behavior like weather, music)
Yes, it's possible to override the commands. First of all, create your custom skills using Amazon Skill Kit, then use android or iOS Alexa Application for
Android.
In "Settings", go to your product if echo/dot or your android/iOS application and enable your skill.
Why does the example on developer documentation app say "companion app"? Do I need Echo to use it? Can I not make an app which will answer questions but does not require echo?
The documentation context of companion app is only to use your hardware as an Alexa device. So using the Amazon login with Amazon SDK library the developer has the to authorize the user and get token from Amazon server for your hardware to communicate with the Alexa server.
Yes, you can make an android or iOS app for talking to the Alexa server. The link below is to a well-developed library for the same.
https://github.com/willblaschko/AlexaAndroid
Is it possible to get text and audio both as output using Alexa API?
No you will never get the text intepretation you will only get the response from Alexa in the form of JSON.
I would like to know the following whether possible with Android or not. I keep searching on line but no luck. I feel that may be possible with new versions of the Android. I want check with experts on Stackoverflow.
Shall I Auto answer the call and play a pre-defined Audio file? At this time, we should not use Micro phone or Speaker.
Once we Auto answer the Call, shall we play pre-defined Audio files based on the DTMF tones received from other end? Do we have Native APIs to read and the DTMF tones? - Simply, can I build a "IVR System" as an Android App? (asking too much? send me your suggestions)
Shall we record the telephony streams as Audio files? We can write a trans-coder if we have access to the streams using the native APIs.
I may be asking too much here, because am a new to android and did not find any absolute answer online.
Thanks in Advance,
- PC Varma
I am beginner in android development and felt like google documentation is not able to help me out. So if anyone knows whether it is possible to send an audio file directly to uplink in between a call? Also share how incase it is possible.
There are no Android APIs that allow you to access, read or write to the audio stream in a call. If any manufacturer provides these APIs, I am not aware of them.
The reason for this is that, at least for AOSP Android, the call part of the device is handled on a hardware level, and not much control is available to Android itself.
It is not possible via the NDK either. The only way you'd have a chance of achieving this is if you were to modify and build Android directly from source.