Incall Services
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Since API 21, Google has been adding features to android.telecom in general, especially by implementing more members of TelecomManager and the addition of InCallService. This last one is is supposed to allow non-system, 3rd-party apps to provide and replace the functionality of the system Calls app in-call screen - the Window that pops up and allows action on EXTRA_STATE_OFFHOOK or EXTRA_STATE_RINGING broadcasts (i.e. incoming and outgoing phone calls).
Currently, only this screen has full control of ringing and active calls and associated system callbacks with fine-grained information, by means of the root-restricted MODIFY_PHONE_STATE permission and a lot of secured AOSP code not even accessible by reflection. It's notably one of the most changed pieces of code in different manufacturers' ROM flavours, together with the launcher, contacts and camera.
How do you actually develop a 3rd-party InCallService?
I won't ask answers for all of these at once, but any one answer probably associates to the other questions. This is broad but intrinsically it needs to be: there's no example on the web I've stumbled upon other than AOSP-code, and that code is based on the assumption of root-privileges, which makes it unusable for 3rd-party app development purposes.
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For your question # 1, does android.intent.action.PHONE_STATE broadcast not work ? – Sharp Edge Jan 20 '17 at 16:01
@SharpEdge you get notified of "a call" but you don't know which android.telecom.Call - developer.android.com/reference/android/telecom/Call.html With such an instance I could actually just Call#answer(int videoState) and get 2. sorted out – leRobot Jan 20 '17 at 16:03
There does not seem to be a lot of info out there - the comments in this question may help though: stackoverflow.com/q/34861910/334402. One thing to note just in case it is not clear - this API is to replace the InCallUI - i.e. the user interface to control calls. – Mick Jan 24 '17 at 10:55
@Mick yeah not a lot, thus the post. I am very aware the purpose of the API is to replace InCallUI. The thing is the API doesn't really provide the means to do so from what I have been able to discern. That question you post asks many of the same questions as I do, and this is likely gonna be closed as broad too... Dude asked like 2 days before me and is so similar I actually double checked to see if that guy was me, but he's not :P! – leRobot Jan 24 '17 at 18:02
First, the user will need to select your app as the default Phone app. Refer to Replacing default Phone app on Android 6 and 7 with InCallService for a way to do that.
You also need to define an InCallService implementation the system will bind to and notify you about the call:
There you should handle at least onCallAdded (set up listeners on Call, start your UI - activity - for the call) and onCallRemoved (remove listeners).
If the user wants to answer the call, you need to invoke the method Call#answer(int) with VideoProfile.STATE_AUDIO_ONLY for example.
Check out Call.Callback for events that can happen with a single call.
I don't know about Google, but you can check out my simplified example https://github.com/arekolek/simple-phone
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took the time to download sample, ran it on an Android Nougat device (should also work on Marshmallow), showed a popup asking to replace dialer (ACTION_CHANGE_DEFAULT_DIALER), received an outbound call, pressed accept, worked as intended. Default (Samsung) dialer didn't show – leRobot Apr 16 '18 at 15:39
@arekolek Is possible to use INCALL SERVICE (your example on Github) without replace SYSTEM UI? – pudnivec74 Jul 28 '18 at 14:50
@pudnivec74 you don't need the InCallService then – arekolek Jul 28 '18 at 15:12
@pudnivec74 Then you want the newer APIs from TelecomManager: acceptRingingCall(), endCall() and silenceRinger(). Like I said, you should've asked a separate question, because it totally does not relate to this answer. – arekolek Jul 28 '18 at 17:46
@MateenChaudhry I'd say Android does not allow this intentionally. Even if you're the selected user app to handle incoming calls, such an important thing as a ringing call should not be 100% intercepted by third-parties. Google is taking even further steps to remove such control in Android Pie, removing access to the full contact provider, SMS app replacement etc – leRobot Oct 9 '18 at 8:49
Follow the advice from the second comment of Replacing in call app. In addition you need a service that implements the InCallService interface. When a call arrives the onCallAdded(Call call) method will be called, giving you a reference to the call object.
Once you have the call object, answering it's as simple as call.answer(). I suggest that when you get the stuff above working, run a couple of test calls to get to know when the different callbacks are invoked.
Regarding tutorials, I couldn't find any when I was looking into this, but that was over a year ago...
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nice, will try a test implementation today and come back with results – leRobot Feb 16 '17 at 10:00
Hi IeRobot, did you tried InCallService, in my case service is not getting invoked for incoming and outgoing calls. – rajahsekar Jun 6 '17 at 6:20
any idea how i can reject the call using this service without letting the mobile vibrate? – Mateen Chaudhry Sep 2 '18 at 3:13
I guess Google must've read this question, because apparently on Android 8, a new permission finally allows answering calls through a 3rd party dev-facing permission.
android.permission.ANSWER_PHONE_CALLS (...) allows apps to answer incoming phone calls programmatically
No details yet though, since the documentation for API 26 hasn't been released yet. I'll make sure to update this answer when they do.
EDIT: user arekolek provided an answer that works perfectly on the original API version of this question (at the time of asking, API was 23, even though the question mentions API 21), thus he gets the tick for right answer. Refer to his answer if you want to implement an incall screen that targets minimum SDK of 23. Note you might need API-dependant code or compat library tweaks if you want it to work on more recent APIs that deprecate (or restrict) usage of the provided sample code. the github repo works as I initially intended.
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This answer is off-topic. You don't need that API if you are implementing an InCallService, you can answer calls with API 23. – arekolek Apr 15 '18 at 8:48
Feel free to improve or add an answer, I am no longer invested in this topic, so I can't make the time to improve the answer to my own question. It is of my understanding that you can only answer calls from Oreo (26) and up, not Marshmallow. See developer.android.com/reference/android/telecom/… - "added in api level 26". Also, a simple google search for "extends InCallService" shows well the state of things... – leRobot Apr 16 '18 at 9:45
My understanding is that acceptRingingCall() lets you tell Android to take the call without becoming the default Phone app. Also, as far as I know, none of the APIs used in the repo I linked to are deprecated or restricted on more recent API levels. – arekolek May 16 '18 at 22:05
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Каталог программ Android
InCall (Обратная Связь) | Расширяет возможности пользователя при входящем звонке
Причина редактирования: Full-версия
программа к сожалению не всем подходит (мне лучше всего Callback Assistant)... дело в том, (может это только у нас в стране: Германия) когда мне звонят и я сбрасываю, то у звонившего снимают (как-будто бы он проговорил со мной минуту)... естественно, когда тот сбросит, окна перезвона не появится (программа встраивается в dialer смартфона и появляется только во время звонка). Callback Assistant появляется после сброса (мной или звонящим) звонка. Но каждый должен выбирать для себя. (я перезваниваю всегда, чаще всего жду пока звонящий бросит трубку (или поднимаю, если у звонящего тоже безлимит)... у меня безлимит во все сети и и-нет)
LG Velvet 4G, Xiaomi Mi6 (Internat. MIUI 11 Stock), Xiaomi A1 (AndroidOS 9 Stock), BQ Aquaris X Pro (AndroidOS 8.1 Stock)
бесполезная программа 5 сек ждать во время входящего звонкабчтобы активировать панельб плюс еще включение автоперезвона еще 30 сек
InCall (Обратная связь) 10.apk ( 437,49 КБ )
для меня очень актуальная прога. тариф безлимит, всем перезваниваю. панель высвечивается моментально. удобна именно в моем случае, особенно за рулем! работает без задержек.
вот полная версия.
Сообщение отредактировал Желька - 18.01.13, 12:16
Samsung Galaxy S8+
Samsng Galaxy Note 8
SGW3, 41мм
Samsung Galaxy S8+
Samsng Galaxy Note 8
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А русский язык где?
Не нужный софт ( имхо )
Сообщение отредактировал ArxAngel2021 - 22.01.13, 18:47
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Зря вы так. У кого безлим и по роботе нужно много перезванивать, то самое оно.
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HTC One S,не появляется красный слайдер при входящем звонке, когда аппарат находится в спящем режиме.
Xiaomi Mi 9, Amazfit GTR,
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Mi TV L65M5-5ASP
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Новый дизайн, иконки, название программы.
Ice Cream Sandwich стиль.
Новый стиль меню входящего звонка.
4
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Отличное приложение. На sgh 5880 работает
Я не вижу кнопки ответить? это что, программа для скидывания всехзвонков.
Я бы хотел видеть одну большую кнопку ответить, чтобы одним нажатием работала, без всяких сдвигов.
В спящем режиме не работает тоже... HTC sensation, 4 андроид .
Бесполезна, после нажатия на кнопку сбрасывает звонок и ставит экран на блокирову
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На филлипсе w626 заработала. После выбора "перезвонить"
на некоторое время появляется экран блокировке, потом
идет перезвон.
Полная версия не встала - "ошибка синтаксиса" при установке
Сообщение отредактировал WillyBums - 30.09.14, 09:00
SE NEO V не работает. Жму на кнопку перезвона и ничего не происходит.
Siemens A55 > Siemens CX70 > Nokia 6300 > Orange San Francisco > Sony Ericsson Neo V > LG G2 mini > Xiaomi Redmi 3X
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P780, андроид 4.2.1 все прекрасно работает, перезванивает в течении нескольких секунд. Вручную то перенабирать неудобно, особенно если спешишь куда то, потом забываешь. А тут тыкнул на кнопку и все.
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