Phone number in about phone v2

- Introduce preference controller to manage phone number
 - Add new strings for multi sim devices

Bug: 36458278
Test: make RunSettingsRoboTests -j40
Change-Id: Ibf5dc65ba67969b6eeb095b8d202ef8a5faf16ca

src/com/android/settings/deviceinfo/PhoneNumberPreferenceController.java

@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2017 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.settings.deviceinfo;
+
+import android.content.Context;
+import android.support.annotation.VisibleForTesting;
+import android.support.v7.preference.Preference;
+import android.support.v7.preference.PreferenceScreen;
+import android.telephony.SubscriptionInfo;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
+
+import com.android.settings.R;
+import com.android.settingslib.DeviceInfoUtils;
+import com.android.settingslib.core.AbstractPreferenceController;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class PhoneNumberPreferenceController extends AbstractPreferenceController {
+
+    private final static String KEY_PHONE_NUMBER = "phone_number";
+
+    private final TelephonyManager mTelephonyManager;
+    private final SubscriptionManager mSubscriptionManager;
+    private final List<Preference> mPreferenceList = new ArrayList<>();
+
+    public PhoneNumberPreferenceController(Context context) {
+        super(context);
+        mTelephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+        mSubscriptionManager = (SubscriptionManager) context.getSystemService(
+                Context.TELEPHONY_SUBSCRIPTION_SERVICE);
+    }
+
+    @Override
+    public String getPreferenceKey() {
+        return KEY_PHONE_NUMBER;
+    }
+
+    @Override
+    public boolean isAvailable() {
+        return true;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        final Preference preference = screen.findPreference(getPreferenceKey());
+        mPreferenceList.add(preference);
+
+        final int phonePreferenceOrder = preference.getOrder();
+        // Add additional preferences for each sim in the device
+        for (int simSlotNumber = 1; simSlotNumber < mTelephonyManager.getPhoneCount();
+                simSlotNumber++) {
+            final Preference multiSimPreference = createNewPreference(screen.getContext());
+            multiSimPreference.setOrder(phonePreferenceOrder + simSlotNumber);
+            multiSimPreference.setKey(KEY_PHONE_NUMBER + simSlotNumber);
+            screen.addPreference(multiSimPreference);
+            mPreferenceList.add(multiSimPreference);
+        }
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        for (int simSlotNumber = 0; simSlotNumber < mPreferenceList.size(); simSlotNumber++) {
+            final Preference simStatusPreference = mPreferenceList.get(simSlotNumber);
+            simStatusPreference.setTitle(getPreferenceTitle(simSlotNumber));
+            simStatusPreference.setSummary(getPhoneNumber(simSlotNumber));
+        }
+    }
+
+    private CharSequence getPhoneNumber(int simSlot) {
+        final SubscriptionInfo subscriptionInfo = getSubscriptionInfo(simSlot);
+        if (subscriptionInfo == null) {
+            return mContext.getString(R.string.device_info_default);
+        }
+
+        return getFormattedPhoneNumber(subscriptionInfo);
+    }
+
+    private CharSequence getPreferenceTitle(int simSlot) {
+        return mTelephonyManager.getPhoneCount() > 1 ? mContext.getString(
+                R.string.status_number_sim_slot, simSlot + 1) : mContext.getString(
+                R.string.status_number);
+    }
+
+    @VisibleForTesting
+    SubscriptionInfo getSubscriptionInfo(int simSlot) {
+        final List<SubscriptionInfo> subscriptionInfoList =
+                mSubscriptionManager.getActiveSubscriptionInfoList();
+        if (subscriptionInfoList != null) {
+            for (SubscriptionInfo info : subscriptionInfoList) {
+                if (info.getSimSlotIndex() == simSlot) {
+                    return info;
+                }
+            }
+        }
+        return null;
+    }
+
+    @VisibleForTesting
+    CharSequence getFormattedPhoneNumber(SubscriptionInfo subscriptionInfo) {
+        final String phoneNumber = DeviceInfoUtils.getFormattedPhoneNumber(mContext,
+                subscriptionInfo);
+        return TextUtils.isEmpty(phoneNumber) ? mContext.getString(R.string.device_info_default)
+                : phoneNumber;
+    }
+
+    @VisibleForTesting
+    Preference createNewPreference(Context context) {
+        return new Preference(context);
+    }
+}