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Detect calls in 3rd party apps, allow speech while ringing
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Use audio mode to detect calls in third party apps.

API 31+ (Android 12+):
- Listen for audio mode changes instead of phone state changes
  for interrupting speech in progress.
- Don't use phone state at all, removing READ_PHONE_STATE permission.

API < 31:
- Use PhoneStateListener instead of receiver.
- To differentiate ringing from in-call, use phone state
  instead of TelecomManager.isInCall. Regression: 870b1a3
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@pilot51
pilot51 committed Dec 2, 2024
1 parent 9ff7a2f commit fc3913f
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Showing 2 changed files with 80 additions and 28 deletions.
2 changes: 1 addition & 1 deletion app/src/main/AndroidManifest.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -19,7 +19,7 @@
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.VIBRATE" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" android:maxSdkVersion="30" />
<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES"
tools:ignore="QueryAllPackagesPermission" />
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106 changes: 79 additions & 27 deletions app/src/main/java/com/pilot51/voicenotify/Service.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,6 @@
package com.pilot51.voicenotify

import android.Manifest
import android.annotation.SuppressLint
import android.app.Notification
import android.bluetooth.BluetoothDevice
import android.content.BroadcastReceiver
Expand All @@ -28,6 +27,7 @@ import android.media.AudioAttributes
import android.media.AudioDeviceInfo
import android.media.AudioFocusRequest
import android.media.AudioManager
import android.media.AudioManager.OnModeChangedListener
import android.os.Build
import android.os.Bundle
import android.os.IBinder
Expand All @@ -37,7 +37,7 @@ import android.service.notification.StatusBarNotification
import android.speech.tts.TextToSpeech
import android.speech.tts.TextToSpeech.OnInitListener
import android.speech.tts.UtteranceProgressListener
import android.telecom.TelecomManager
import android.telephony.PhoneStateListener
import android.telephony.TelephonyManager
import android.util.Log
import android.view.Display
Expand Down Expand Up @@ -70,6 +70,7 @@ import kotlinx.coroutines.flow.first
import kotlinx.coroutines.flow.firstOrNull
import kotlinx.coroutines.launch
import java.util.*
import java.util.concurrent.Executors

class Service : NotificationListenerService() {
private val appContext by ::applicationContext
Expand All @@ -78,7 +79,7 @@ class Service : NotificationListenerService() {
private var tts: TextToSpeech? = null
private var shouldRequestFocus = false
private lateinit var audioMan: AudioManager
private lateinit var telephony: TelephonyManager
private lateinit var telephonyMan: TelephonyManager
private val stateReceiver = DeviceStateReceiver()
private var repeater: RepeatTimer? = null
private val shake by lazy { Shake(appContext) }
Expand All @@ -89,6 +90,20 @@ class Service : NotificationListenerService() {
.setLegacyStreamType(AudioManager.STREAM_MUSIC).build())
.build()
} else null
private val phoneStateListener by lazy {
@Suppress("DEPRECATION")
object : PhoneStateListener() {
@Deprecated("Deprecated in Java")
override fun onCallStateChanged(state: Int, phoneNumber: String?) {
if (isPhoneStateInCall(state)) processIgnoreForQueue()
}
}
}
private val audioModeListener by lazy {
OnModeChangedListener { mode ->
if (isAudioModeInCall(mode)) processIgnoreForQueue()
}
}

/**
* this is used to determine if we are the first, middle, or last thing to be spoken at the moment, for enabling/disabling shake and audio focus request
Expand Down Expand Up @@ -363,12 +378,7 @@ class Service : NotificationListenerService() {
&& !(settings.speakSilentOn ?: DEFAULT_SPEAK_SILENT_ON)) {
ignoreReasons.add(IgnoreReason.SILENT)
}
val telecomMan = getSystemService(TELECOM_SERVICE) as TelecomManager
@SuppressLint("MissingPermission")
val isInCall = if (isPermissionGranted(Manifest.permission.READ_PHONE_STATE)) {
telecomMan.isInCall
} else false
if (isInCall) {
if (isAudioModeInCall() || (usePhoneState && isPhoneStateInCall())) {
ignoreReasons.add(IgnoreReason.CALL)
}
if (!isScreenOn() && !(settings.speakScreenOff ?: DEFAULT_SPEAK_SCREEN_OFF)) {
Expand Down Expand Up @@ -413,13 +423,21 @@ class Service : NotificationListenerService() {
override fun onBind(intent: Intent): IBinder? {
if (isRunning.value) return super.onBind(intent)
audioMan = getSystemService(AUDIO_SERVICE) as AudioManager
telephony = getSystemService(TELEPHONY_SERVICE) as TelephonyManager
val filter = IntentFilter(Intent.ACTION_HEADSET_PLUG)
filter.addAction(BluetoothDevice.ACTION_ACL_CONNECTED)
filter.addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED)
filter.addAction(Intent.ACTION_SCREEN_ON)
filter.addAction(Intent.ACTION_SCREEN_OFF)
filter.addAction(TelephonyManager.ACTION_PHONE_STATE_CHANGED)
if (usePhoneState) {
telephonyMan = getSystemService(TELEPHONY_SERVICE) as TelephonyManager
@Suppress("DEPRECATION")
telephonyMan.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE)
} else {
audioMan.addOnModeChangedListener(Executors.newSingleThreadExecutor(), audioModeListener)
}
val filter = IntentFilter().apply {
addAction(Intent.ACTION_HEADSET_PLUG)
addAction(BluetoothDevice.ACTION_ACL_CONNECTED)
addAction(BluetoothDevice.ACTION_ACL_CONNECTED)
addAction(BluetoothDevice.ACTION_ACL_DISCONNECTED)
addAction(Intent.ACTION_SCREEN_ON)
addAction(Intent.ACTION_SCREEN_OFF)
}
registerReceiver(stateReceiver, filter)
shake.onShake = {
Log.i(TAG, "TTS silenced by shake")
Expand All @@ -438,6 +456,12 @@ class Service : NotificationListenerService() {
override fun onUnbind(intent: Intent): Boolean {
if (isRunning.value) {
shutdownTts()
if (usePhoneState) {
@Suppress("DEPRECATION")
telephonyMan.listen(phoneStateListener, PhoneStateListener.LISTEN_NONE)
} else {
audioMan.removeOnModeChangedListener(audioModeListener)
}
unregisterReceiver(stateReceiver)
setInitialized(false)
}
Expand Down Expand Up @@ -484,6 +508,29 @@ class Service : NotificationListenerService() {
}
}

/**
* @param mode The audio mode to check. Defaults to `mode` from [audioMan].
* @return `true` if [mode] is in call or in communication.
*/
private fun isAudioModeInCall(mode: Int = audioMan.mode) = mode.isAny(
AudioManager.MODE_IN_CALL,
AudioManager.MODE_IN_COMMUNICATION
) || (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU && mode.isAny(
AudioManager.MODE_CALL_REDIRECT,
AudioManager.MODE_COMMUNICATION_REDIRECT
))

/**
* @param state The phone state to check.
* Defaults to `callState` from [telephonyMan] if `READ_PHONE_STATE` permission is granted, otherwise -1.
* @return `true` if [state] is off-hook, `false` if not or if permission is denied for default value.
*/
private fun isPhoneStateInCall(
state: Int = if (isPermissionGranted(Manifest.permission.READ_PHONE_STATE)) {
@Suppress("DEPRECATION") telephonyMan.callState
} else -1
) = state == TelephonyManager.CALL_STATE_OFFHOOK

private inner class DeviceStateReceiver : BroadcastReceiver() {
override fun onReceive(context: Context, intent: Intent) {
val action = intent.action
Expand All @@ -503,20 +550,24 @@ class Service : NotificationListenerService() {
}
}
if (interruptIfIgnored) {
tts?.run {
synchronized(ttsQueue) {
for (info in ttsQueue.values) {
val ignoreReasons = ignore(info.settings)
if (ignoreReasons.isNotEmpty()) {
Log.i(TAG, "Notification from ${info.app?.label} silenced/ignored" +
" for reason(s): ${ignoreReasons.joinToString()}")
info.ignoreReasons.addAll(ignoreReasons)
}
}
processIgnoreForQueue()
}
}
}

private fun processIgnoreForQueue() {
tts?.run {
synchronized(ttsQueue) {
for (info in ttsQueue.values) {
val ignoreReasons = ignore(info.settings)
if (ignoreReasons.isNotEmpty()) {
Log.i(TAG, "Notification from ${info.app?.label} silenced/ignored" +
" for reason(s): ${ignoreReasons.joinToString()}")
info.ignoreReasons.addAll(ignoreReasons)
}
stop()
}
}
stop()
}
}

Expand All @@ -529,6 +580,7 @@ class Service : NotificationListenerService() {

companion object {
private val TAG = Service::class.simpleName
private val usePhoneState = Build.VERSION.SDK_INT < Build.VERSION_CODES.S
private val isInitialized = MutableStateFlow(false)
val isRunning: StateFlow<Boolean> = isInitialized
var isSuspended = MutableStateFlow(false)
Expand Down

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