Create a helper lib for emergency numbers.
This util class manages getting/setting default emergency numbers,
shared by settings, EmergencyInfo and other clients.
The logic is copied from Personal Safety app - http://shortn/_Z7qtV6RpJG
Bug: 172609395
Test: manual
Change-Id: I9062d84f49556d2b7e7866c43d64dac55d48f4f4
diff --git a/packages/SettingsLib/EmergencyNumber/Android.bp b/packages/SettingsLib/EmergencyNumber/Android.bp
new file mode 100644
index 0000000..3c41f78
--- /dev/null
+++ b/packages/SettingsLib/EmergencyNumber/Android.bp
@@ -0,0 +1,10 @@
+android_library {
+ name: "SettingsLibEmergencyNumber",
+
+ srcs: ["src/**/*.java"],
+ static_libs: [
+ "androidx.annotation_annotation",
+ ],
+ sdk_version: "system_current",
+ min_sdk_version: "21",
+}
diff --git a/packages/SettingsLib/EmergencyNumber/AndroidManifest.xml b/packages/SettingsLib/EmergencyNumber/AndroidManifest.xml
new file mode 100644
index 0000000..b877fc4
--- /dev/null
+++ b/packages/SettingsLib/EmergencyNumber/AndroidManifest.xml
@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+ ~ Copyright (C) 2019 The Android Open Source Project
+ ~
+ ~ Licensed under the Apache License, Version 2.0 (the "License");
+ ~ you may not use this file except in compliance with the License.
+ ~ You may obtain a copy of the License at
+ ~
+ ~ http://www.apache.org/licenses/LICENSE-2.0
+ ~
+ ~ Unless required by applicable law or agreed to in writing, software
+ ~ distributed under the License is distributed on an "AS IS" BASIS,
+ ~ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ ~ See the License for the specific language governing permissions and
+ ~ limitations under the License
+ -->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="com.android.settingslib.emergencynumber">
+
+ <uses-sdk android:minSdkVersion="21" />
+
+</manifest>
diff --git a/packages/SettingsLib/EmergencyNumber/src/com/android/settingslib/emergencynumber/EmergencyNumberUtils.java b/packages/SettingsLib/EmergencyNumber/src/com/android/settingslib/emergencynumber/EmergencyNumberUtils.java
new file mode 100644
index 0000000..12d21ca
--- /dev/null
+++ b/packages/SettingsLib/EmergencyNumber/src/com/android/settingslib/emergencynumber/EmergencyNumberUtils.java
@@ -0,0 +1,133 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.settingslib.emergencynumber;
+
+import static android.telephony.emergency.EmergencyNumber.EMERGENCY_NUMBER_SOURCE_DATABASE;
+import static android.telephony.emergency.EmergencyNumber.EMERGENCY_SERVICE_CATEGORY_POLICE;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.provider.Settings;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+import android.telephony.emergency.EmergencyNumber;
+import android.text.TextUtils;
+import android.util.ArrayMap;
+import android.util.Log;
+
+import androidx.annotation.VisibleForTesting;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Util class to help manage emergency numbers
+ */
+public class EmergencyNumberUtils {
+ private static final String TAG = "EmergencyNumberUtils";
+ private static final String EMERGENCY_GESTURE_CALL_NUMBER = "emergency_gesture_call_number";
+ @VisibleForTesting
+ static final String FALL_BACK_NUMBER = "112";
+
+ private final Context mContext;
+ private final TelephonyManager mTelephonyManager;
+
+
+ public EmergencyNumberUtils(Context context) {
+ mContext = context;
+ if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_TELEPHONY)) {
+ mTelephonyManager = context.getSystemService(TelephonyManager.class);
+ } else {
+ mTelephonyManager = null;
+ }
+ }
+
+ /**
+ * Returns the most appropriate number for police.
+ */
+ public String getDefaultPoliceNumber() {
+ if (mTelephonyManager == null) {
+ return FALL_BACK_NUMBER;
+ }
+ final List<EmergencyNumber> promotedPoliceNumber = getPromotedEmergencyNumbers(
+ EMERGENCY_SERVICE_CATEGORY_POLICE);
+ if (promotedPoliceNumber == null || promotedPoliceNumber.isEmpty()) {
+ return FALL_BACK_NUMBER;
+ }
+ return promotedPoliceNumber.get(0).getNumber();
+ }
+
+ /**
+ * Returns the number chosen by user. If user has not provided any number, use default ({@link
+ * #getDefaultPoliceNumber()}).
+ */
+ public String getPoliceNumber() {
+ final String userProvidedNumber = Settings.Secure.getString(mContext.getContentResolver(),
+ EMERGENCY_GESTURE_CALL_NUMBER);
+ return TextUtils.isEmpty(userProvidedNumber)
+ ? getDefaultPoliceNumber() : userProvidedNumber;
+ }
+
+ private List<EmergencyNumber> getPromotedEmergencyNumbers(int categories) {
+ Map<Integer, List<EmergencyNumber>> allLists = mTelephonyManager.getEmergencyNumberList(
+ categories);
+ if (allLists == null || allLists.isEmpty()) {
+ Log.w(TAG, "Unable to retrieve emergency number lists!");
+ return new ArrayList<>();
+ }
+ Map<Integer, List<EmergencyNumber>> promotedEmergencyNumberLists = new ArrayMap<>();
+ for (Map.Entry<Integer, List<EmergencyNumber>> entry : allLists.entrySet()) {
+ if (entry.getKey() == null || entry.getValue() == null) {
+ continue;
+ }
+ List<EmergencyNumber> emergencyNumberList = entry.getValue();
+ Log.d(TAG, "Emergency numbers for subscription id " + entry.getKey());
+
+ // The list of promoted emergency numbers which will be visible on shortcut view.
+ List<EmergencyNumber> promotedList = new ArrayList<>();
+ // A temporary list for non-prioritized emergency numbers.
+ List<EmergencyNumber> tempList = new ArrayList<>();
+
+ for (EmergencyNumber emergencyNumber : emergencyNumberList) {
+ // Emergency numbers in DATABASE are prioritized since they were well-categorized.
+ boolean isFromPrioritizedSource =
+ emergencyNumber.getEmergencyNumberSources().contains(
+ EMERGENCY_NUMBER_SOURCE_DATABASE);
+
+ Log.d(TAG, String.format("Number %s, isFromPrioritizedSource %b",
+ emergencyNumber, isFromPrioritizedSource));
+ if (isFromPrioritizedSource) {
+ promotedList.add(emergencyNumber);
+ } else {
+ tempList.add(emergencyNumber);
+ }
+ }
+ // Puts numbers in temp list after prioritized numbers.
+ promotedList.addAll(tempList);
+
+ if (!promotedList.isEmpty()) {
+ promotedEmergencyNumberLists.put(entry.getKey(), promotedList);
+ }
+ }
+
+ if (promotedEmergencyNumberLists.isEmpty()) {
+ Log.w(TAG, "No promoted emergency number found!");
+ }
+ return promotedEmergencyNumberLists.get(SubscriptionManager.getDefaultSubscriptionId());
+ }
+}