Created Multi-SIM notifications.

+ On Multi-SIM devices a notificaiton will pop up when a SIM card is
added, removed, or replaced.
+ The notification informs the user there has been a change in SIMs and
they can tap the notification to go SIM Card Settings.

Bug: 18293625

Change-Id: Iad1e5e0cf469e7bdfc43b2c18dd0586d042bb784

AndroidManifest.xml

@@ -66,6 +66,7 @@
     <uses-permission android:name="android.permission.SET_TIME" />
     <uses-permission android:name="android.permission.ACCESS_NOTIFICATIONS" />
     <uses-permission android:name="android.permission.REBOOT" />
+    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
     <uses-permission android:name="android.permission.MANAGE_DEVICE_ADMINS" />
     <uses-permission android:name="android.permission.READ_SEARCH_INDEXABLES" />
     <uses-permission android:name="android.permission.OEM_UNLOCK_STATE" />
@@ -1988,6 +1989,12 @@
             </intent-filter>
         </receiver>
 
+        <receiver android:name=".sim.SimBootReceiver">
+            <intent-filter>
+                <action android:name="android.intent.action.BOOT_COMPLETED"></action>
+            </intent-filter>
+        </receiver>
+
         <provider
             android:name="android.support.v4.content.FileProvider"
             android:authorities="com.android.settings.files"

res/values/colors.xml

@@ -72,4 +72,6 @@
     <color name="switch_accent_color">#ff7fcac3</color>
 
     <color name="wifi_divider">#ffe0e0e0</color>
+    <color name="sim_noitification">@*android:color/material_deep_teal_500</color>
+
 </resources>

res/values/strings.xml

@@ -5548,6 +5548,10 @@
     <string name="preferred_network_offload_popup">Disabling Network Name Broadcast will prevent automatic connection to hidden networks.</string>
     <!-- Summary text describing signal strength to the user.  [CHAR LIMIT=60] -->
     <string name="sim_signal_strength"><xliff:g id="dbm">%1$d</xliff:g> dBm <xliff:g id="asu">%2$d</xliff:g> asu</string>
+    <!-- Title for SIM card notification.  [CHAR LIMIT=40] -->
+    <string name="sim_notification_title">SIM cards changed.</string>
+    <!-- Message under title informing the user to touch to go to SIM Cards in Settings.  [CHAR LIMIT=40] -->
+    <string name="sim_notification_summary">Touch to set up</string>
 
     <!-- This is a divider in the SIM cards preferences that is the header of various settings where the user chooses which SIM to use for phone calls, data, and SMS messages [CHAR LIMIT=50] -->
     <string name="sim_pref_divider">Preferred SIM for</string>

src/com/android/settings/sim/SimBootReceiver.java

@@ -0,0 +1,142 @@
+/*
+ * Copyright (C) 2014 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.sim;
+
+import com.android.settings.R;
+import com.android.settings.Settings.SimSettingsActivity;
+
+import java.util.List;
+
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.content.SharedPreferences.Editor;
+import android.content.res.Resources;
+import android.support.v4.app.NotificationCompat;
+import android.telephony.SubscriptionInfo;
+import android.telephony.SubscriptionListener;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+import android.util.Log;
+
+import com.android.settings.Utils;
+
+public class SimBootReceiver extends BroadcastReceiver {
+    private static final int SLOT_EMPTY = -1;
+    private static final int NOTIFICATION_ID = 1;
+    private static final String SHARED_PREFERENCES_NAME = "sim_state";
+    private static final String SLOT_PREFIX = "sim_slot_";
+
+    private SharedPreferences mSharedPreferences = null;
+    private TelephonyManager mTelephonyManager;
+    private Context mContext;
+
+    @Override
+    public void onReceive(Context context, Intent intent) {
+        mTelephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
+        mContext = context;
+        mSharedPreferences = mContext.getSharedPreferences(SHARED_PREFERENCES_NAME,
+                Context.MODE_PRIVATE);
+
+        SubscriptionManager.register(mContext, mSubscriptionListener,
+                SubscriptionListener.LISTEN_SUBSCRIPTION_INFO_LIST_CHANGED);
+    }
+
+    private void detectChangeAndNotify() {
+        final int numSlots = mTelephonyManager.getSimCount();
+
+        // Do not create notifications on single SIM devices.
+        if (numSlots < 2) {
+            return;
+        }
+
+        // We wait until SubscriptionManager returns a valid list of Subscription informations
+        // by checking if the list is empty.
+        // This is not completely correct, but works for most cases.
+        // See Bug: 18377252
+        if (SubscriptionManager.getActiveSubscriptionInfoList().size() < 1) {
+            return;
+        }
+
+        for (int i = 0; i < numSlots; i++) {
+            final SubscriptionInfo sir = Utils.findRecordBySlotId(i);
+            final String key = SLOT_PREFIX+i;
+            final int lastSubId = getLastSubId(key);
+
+            if (sir != null) {
+                final int currentSubId = sir.getSubscriptionId();
+                if (lastSubId != currentSubId) {
+                    createNotification(mContext);
+                    setLastSubId(key, currentSubId);
+                }
+            } else if (lastSubId != SLOT_EMPTY) {
+                createNotification(mContext);
+                setLastSubId(key, SLOT_EMPTY);
+            }
+        }
+    }
+
+    private int getLastSubId(String strSlotId) {
+        return mSharedPreferences.getInt(strSlotId, SLOT_EMPTY);
+    }
+
+    private void setLastSubId(String strSlotId, int value) {
+        Editor editor = mSharedPreferences.edit();
+        editor.putInt(strSlotId, value);
+        editor.commit();
+    }
+
+    private void createNotification(Context context){
+        final Resources resources = context.getResources();
+
+        NotificationCompat.Builder builder =
+                new NotificationCompat.Builder(context)
+                .setSmallIcon(R.drawable.ic_sim_card_alert_white_48dp)
+                .setColor(resources.getColor(R.color.sim_noitification))
+                .setContentTitle(resources.getString(R.string.sim_notification_title))
+                .setContentText(resources.getString(R.string.sim_notification_summary));
+        Intent resultIntent = new Intent(context, SimSettingsActivity.class);
+        resultIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        PendingIntent resultPendingIntent =
+                PendingIntent.getActivity(
+                context,
+                0,
+                resultIntent,
+                PendingIntent.FLAG_CANCEL_CURRENT
+                );
+        builder.setContentIntent(resultPendingIntent);
+        NotificationManager notificationManager =
+                    (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+        notificationManager.notify(NOTIFICATION_ID, builder.build());
+    }
+
+    public static void cancelNotification(Context context) {
+        NotificationManager notificationManager =
+                    (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
+        notificationManager.cancel(NOTIFICATION_ID);
+    }
+
+    private final SubscriptionListener mSubscriptionListener = new SubscriptionListener() {
+        @Override
+        public void onSubscriptionInfoChanged() {
+            detectChangeAndNotify();
+        }
+    };
+}

src/com/android/settings/sim/SimSettings.java

@@ -131,6 +131,8 @@ public class SimSettings extends RestrictedSettingsFragment implements Indexable
 
         createPreferences();
         updateAllOptions();
+
+        SimBootReceiver.cancelNotification(getActivity());
     }
 
     private void createPreferences() {
@@ -583,5 +585,4 @@ public class SimSettings extends RestrictedSettingsFragment implements Indexable
                     return result;
                 }
             };
-
 }