Set RTT capability on the emergency PhoneAccount
When a device doesn't have a SIM inserted, Telephony registers a special
PhoneAccount with Telecom for making emergency calls. This changes sets
the RTT capability on that emergency PhoneAccount under certain
circumstances, letting the phone dial an emergency RTT call even without
a SIM.
In order for a device to support this functionality, they should set the
config_support_simless_emergency_rtt config to true in their device
overlay.
Fixes: 147078534
Test: manual
Change-Id: Idab399e99f4a25396003329e6d03048d8767ba7b
diff --git a/res/values/config.xml b/res/values/config.xml
index d4e4c79..423236d 100644
--- a/res/values/config.xml
+++ b/res/values/config.xml
@@ -257,6 +257,16 @@
audio stream which the remote party will be able to hear. -->
<bool name="config_support_telephony_audio_device">false</bool>
+ <!-- Whether the device supports dialing emergency RTT calls when there's no SIM card installed
+ -->
+ <bool name="config_support_simless_emergency_rtt">false</bool>
+
+ <!-- Array of countries that support sim-less emergency RTT calls. Values should be
+ ISO3166 country codes in lowercase. -->
+ <string-array name="config_simless_emergency_rtt_supported_countries">
+ <item>us</item>
+ </string-array>
+
<string-array translatable="false" name="config_volte_provision_error_on_publish_response">
<item>403 not authorized for presence</item>
</string-array>
diff --git a/src/com/android/services/telephony/TelecomAccountRegistry.java b/src/com/android/services/telephony/TelecomAccountRegistry.java
index 2dbf0b1..b4b7405 100644
--- a/src/com/android/services/telephony/TelecomAccountRegistry.java
+++ b/src/com/android/services/telephony/TelecomAccountRegistry.java
@@ -55,6 +55,7 @@
import android.text.TextUtils;
import com.android.ims.ImsManager;
+import com.android.internal.telephony.LocaleTracker;
import com.android.internal.telephony.Phone;
import com.android.internal.telephony.PhoneFactory;
import com.android.internal.telephony.SubscriptionController;
@@ -67,6 +68,7 @@
import java.util.LinkedList;
import java.util.List;
import java.util.Optional;
+import java.util.function.Predicate;
/**
* Owns all data we have registered with Telecom including handling dynamic addition and
@@ -773,6 +775,34 @@
* device.
*/
private boolean isRttCurrentlySupported() {
+ // First check the emergency case -- if it's supported and turned on,
+ // we want to present RTT as available on the emergency-only phone account
+ if (mIsEmergency) {
+ // First check whether the device supports it
+ boolean devicesSupportsRtt =
+ mContext.getResources().getBoolean(R.bool.config_support_rtt);
+ boolean deviceSupportsEmergencyRtt = mContext.getResources().getBoolean(
+ R.bool.config_support_simless_emergency_rtt);
+ if (!(deviceSupportsEmergencyRtt && devicesSupportsRtt)) {
+ Log.i(this, "isRttCurrentlySupported -- emergency acct and no device support");
+ return false;
+ }
+ // Next check whether we're in or near a country that supports it
+ String country =
+ mPhone.getServiceStateTracker().getLocaleTracker()
+ .getCurrentCountry().toLowerCase();
+ String[] supportedCountries = mContext.getResources().getStringArray(
+ R.array.config_simless_emergency_rtt_supported_countries);
+ if (supportedCountries == null || Arrays.stream(supportedCountries).noneMatch(
+ Predicate.isEqual(country))) {
+ Log.i(this, "isRttCurrentlySupported -- emergency acct and"
+ + " not supported in this country: " + country);
+ return false;
+ }
+
+ return true;
+ }
+
boolean hasVoiceAvailability = isImsVoiceAvailable();
boolean isRttSupported = PhoneGlobals.getInstance().phoneMgr
@@ -783,6 +813,12 @@
== ImsRegistrationImplBase.REGISTRATION_TECH_IWLAN;
boolean shouldDisableBecauseRoamingOffWfc = isRoaming && !isOnWfc;
+ Log.i(this, "isRttCurrentlySupported -- regular acct,"
+ + " hasVoiceAvailability: " + hasVoiceAvailability + "\n"
+ + " isRttSupported: " + isRttSupported + "\n"
+ + " isRoaming: " + isRoaming + "\n"
+ + " isOnWfc: " + isOnWfc + "\n");
+
return hasVoiceAvailability && isRttSupported && !shouldDisableBecauseRoamingOffWfc;
}
@@ -1198,8 +1234,9 @@
//We also need to listen for locale changes
//(e.g. system language changed -> SIM card name changed)
- mContext.registerReceiver(mLocaleChangeReceiver,
- new IntentFilter(Intent.ACTION_LOCALE_CHANGED));
+ IntentFilter localeChangeFilter = new IntentFilter(Intent.ACTION_LOCALE_CHANGED);
+ localeChangeFilter.addAction(TelephonyManager.ACTION_NETWORK_COUNTRY_CHANGED);
+ mContext.registerReceiver(mLocaleChangeReceiver, localeChangeFilter);
// Listen to the RTT system setting so that we update it when the user flips it.
ContentObserver rttUiSettingObserver = new ContentObserver(