Add TtsSpan for formatted time.

Talk back will read "Used for 3m" as "Used for 3 meters", but
it will read "Used for 3h 3m" correctly.

This cl add specific Ttsspan if the time only contains "minute"

Bug: 36379530
Test: Run SettingsRoboTests

Change-Id: I033575938cce24221980dddd9d66be4e18804541
diff --git a/src/com/android/settings/Utils.java b/src/com/android/settings/Utils.java
index d04ae8d..f6f980a 100644
--- a/src/com/android/settings/Utils.java
+++ b/src/com/android/settings/Utils.java
@@ -81,6 +81,8 @@
 import android.telephony.TelephonyManager;
 import android.text.Spannable;
 import android.text.SpannableString;
+import android.text.SpannableStringBuilder;
+import android.text.Spanned;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
 import android.text.style.TtsSpan;
@@ -770,8 +772,9 @@
      * @param withSeconds include seconds?
      * @return the formatted elapsed time
      */
-    public static String formatElapsedTime(Context context, double millis, boolean withSeconds) {
-        StringBuilder sb = new StringBuilder();
+    public static CharSequence formatElapsedTime(Context context, double millis,
+            boolean withSeconds) {
+        SpannableStringBuilder sb = new SpannableStringBuilder();
         int seconds = (int) Math.floor(millis / 1000);
         if (!withSeconds) {
             // Round up.
@@ -812,9 +815,15 @@
                         hours, minutes));
             } else {
                 sb.append(context.getString(R.string.battery_history_minutes_no_seconds, minutes));
+
+                // Add ttsSpan if it only have minute value, because it will be read as "meters"
+                TtsSpan ttsSpan = new TtsSpan.MeasureBuilder().setNumber(minutes)
+                        .setUnit("minute").build();
+                sb.setSpan(ttsSpan, 0, sb.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
             }
         }
-        return sb.toString();
+
+        return sb;
     }
 
     /**
@@ -1256,4 +1265,5 @@
         return (volume != null) && (volume.getType() == VolumeInfo.TYPE_PRIVATE)
                 && volume.isMountedReadable();
     }
+
 }
diff --git a/src/com/android/settings/fuelgauge/AdvancedPowerUsageDetail.java b/src/com/android/settings/fuelgauge/AdvancedPowerUsageDetail.java
index 0c798a6..e4f7e22 100644
--- a/src/com/android/settings/fuelgauge/AdvancedPowerUsageDetail.java
+++ b/src/com/android/settings/fuelgauge/AdvancedPowerUsageDetail.java
@@ -28,6 +28,7 @@
 import android.support.annotation.VisibleForTesting;
 import android.support.v14.preference.PreferenceFragment;
 import android.support.v7.preference.Preference;
+import android.text.TextUtils;
 import android.view.View;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
@@ -82,6 +83,8 @@
     ApplicationsState mState;
     @VisibleForTesting
     ApplicationsState.AppEntry mAppEntry;
+    @VisibleForTesting
+    BatteryUtils mBatteryUtils;
 
     private Preference mForegroundPreference;
     private Preference mBackgroundPreference;
@@ -136,6 +139,7 @@
                 (DevicePolicyManager) activity.getSystemService(Context.DEVICE_POLICY_SERVICE));
         mUserManager = (UserManager) activity.getSystemService(Context.USER_SERVICE);
         mPackageManager = activity.getPackageManager();
+        mBatteryUtils = BatteryUtils.getInstance(getContext());
     }
 
     @Override
diff --git a/src/com/android/settings/fuelgauge/BatteryUtils.java b/src/com/android/settings/fuelgauge/BatteryUtils.java
index 48e2421..c8af4a0 100644
--- a/src/com/android/settings/fuelgauge/BatteryUtils.java
+++ b/src/com/android/settings/fuelgauge/BatteryUtils.java
@@ -15,14 +15,13 @@
  */
 package com.android.settings.fuelgauge;
 
-import android.annotation.IntDef;
 import android.content.Context;
 import android.content.pm.PackageManager;
 import android.os.BatteryStats;
 import android.os.SystemClock;
+import android.support.annotation.IntDef;
 import android.support.annotation.Nullable;
 import android.support.annotation.VisibleForTesting;
-import android.text.format.DateUtils;
 import android.util.Log;
 
 import com.android.internal.os.BatterySipper;
@@ -64,7 +63,8 @@
         return sInstance;
     }
 
-    private BatteryUtils(Context context) {
+    @VisibleForTesting
+    BatteryUtils(Context context) {
         mPackageManager = context.getPackageManager();
         mPowerUsageFeatureProvider = FeatureFactory.getFactory(
                 context).getPowerUsageFeatureProvider(context);
diff --git a/src/com/android/settings/fuelgauge/PowerGaugePreference.java b/src/com/android/settings/fuelgauge/PowerGaugePreference.java
index bdadf4c..b124c81 100644
--- a/src/com/android/settings/fuelgauge/PowerGaugePreference.java
+++ b/src/com/android/settings/fuelgauge/PowerGaugePreference.java
@@ -79,11 +79,15 @@
         return mProgress.toString();
     }
 
-    public void setSubtitle(String subtitle) {
+    public void setSubtitle(CharSequence subtitle) {
         mProgress = subtitle;
         notifyChanged();
     }
 
+    public CharSequence getSubtitle() {
+        return mProgress;
+    }
+
     BatteryEntry getInfo() {
         return mInfo;
     }
diff --git a/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java b/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java
index b718f8f..28dfe1d 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageAdvanced.java
@@ -29,6 +29,7 @@
 import android.support.annotation.VisibleForTesting;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceGroup;
+import android.text.TextUtils;
 
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.internal.os.BatterySipper;
@@ -67,13 +68,15 @@
             UsageType.APP,
             UsageType.UNACCOUNTED,
             UsageType.OVERCOUNTED};
+
+    @VisibleForTesting
+    BatteryUtils mBatteryUtils;
     private BatteryHistoryPreference mHistPref;
     private PreferenceGroup mUsageListGroup;
     private PowerUsageFeatureProvider mPowerUsageFeatureProvider;
     private PackageManager mPackageManager;
     private UserManager mUserManager;
     private Map<Integer, PowerUsageData> mBatteryDataMap;
-    private BatteryUtils mBatteryUtils;
 
     Handler mHandler = new Handler() {
 
@@ -270,8 +273,10 @@
             return;
         }
         if (usageData.usageList.size() <= 1) {
-            usageData.summary = getString(R.string.battery_used_for,
-                    Utils.formatElapsedTime(getContext(), usageData.totalUsageTimeMs, false));
+            CharSequence timeSequence = Utils.formatElapsedTime(getContext(),
+                    usageData.totalUsageTimeMs, false);
+            usageData.summary = TextUtils.expandTemplate(getText(R.string.battery_used_for),
+                    timeSequence);
         } else {
             BatterySipper sipper = findBatterySipperWithMaxBatteryUsage(usageData.usageList);
             BatteryEntry batteryEntry = new BatteryEntry(getContext(), mHandler, mUserManager,
@@ -346,7 +351,7 @@
 
         @StringRes
         public int titleResId;
-        public String summary;
+        public CharSequence summary;
         public double percentage;
         public double totalPowerMah;
         public long totalUsageTimeMs;
diff --git a/src/com/android/settings/fuelgauge/PowerUsageSummary.java b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
index 5f12d7c..b0dacb0 100644
--- a/src/com/android/settings/fuelgauge/PowerUsageSummary.java
+++ b/src/com/android/settings/fuelgauge/PowerUsageSummary.java
@@ -415,15 +415,16 @@
         final TypedValue value = new TypedValue();
         context.getTheme().resolveAttribute(android.R.attr.colorControlNormal, value, true);
         final int colorControl = context.getColor(value.resourceId);
-        final String usedTime = context.getString(R.string.battery_used_for);
         final int dischargeAmount = USE_FAKE_DATA ? 5000
                 : stats != null ? stats.getDischargeAmount(mStatsType) : 0;
 
         final long runningTime = calculateRunningTimeBasedOnStatsType();
         updateScreenPreference();
         updateLastFullChargePreference(runningTime);
-        mAppListGroup.setTitle(getString(R.string.power_usage_list_summary,
-                Utils.formatElapsedTime(context, runningTime, false)));
+
+        final CharSequence timeSequence = Utils.formatElapsedTime(context, runningTime, false);
+        mAppListGroup.setTitle(
+                TextUtils.expandTemplate(getText(R.string.power_usage_list_summary), timeSequence));
 
         if (averagePower >= MIN_AVERAGE_POWER_THRESHOLD_MILLI_AMP || USE_FAKE_DATA) {
             final List<BatterySipper> usageList = getCoalescedUsageList(
@@ -494,7 +495,7 @@
                     sipper.usageTimeMs = mBatteryUtils.getProcessTimeMs(
                             BatteryUtils.StatusType.FOREGROUND, sipper.uidObj, mStatsType);
                 }
-                setUsageSummary(pref, usedTime, sipper.usageTimeMs);
+                setUsageSummary(pref, sipper.usageTimeMs);
                 if ((sipper.drainType != DrainType.APP
                         || sipper.uidObj.getUid() == Process.ROOT_UID)
                         && sipper.drainType != DrainType.USER) {
@@ -531,16 +532,17 @@
     void updateScreenPreference() {
         final BatterySipper sipper = findBatterySipperByType(
                 mStatsHelper.getUsageList(), DrainType.SCREEN);
-        final Context context = getContext();
         final long usageTimeMs = sipper != null ? sipper.usageTimeMs : 0;
 
-        mScreenUsagePref.setSubtitle(Utils.formatElapsedTime(context, usageTimeMs, false));
+        mScreenUsagePref.setSubtitle(Utils.formatElapsedTime(getContext(), usageTimeMs, false));
     }
 
     @VisibleForTesting
     void updateLastFullChargePreference(long timeMs) {
-        mLastFullChargePref.setSubtitle(getString(R.string.power_last_full_charge_summary,
-                Utils.formatElapsedTime(getContext(), timeMs, false)));
+        final CharSequence timeSequence = Utils.formatElapsedTime(getContext(), timeMs, false);
+        mLastFullChargePref.setSubtitle(
+                TextUtils.expandTemplate(getText(R.string.power_last_full_charge_summary),
+                        timeSequence));
     }
 
     @VisibleForTesting
@@ -580,11 +582,13 @@
     }
 
     @VisibleForTesting
-    void setUsageSummary(Preference preference, String usedTimePrefix, long usageTimeMs) {
+    void setUsageSummary(Preference preference, long usageTimeMs) {
         // Only show summary when usage time is longer than one minute
         if (usageTimeMs >= DateUtils.MINUTE_IN_MILLIS) {
-            preference.setSummary(String.format(usedTimePrefix,
-                    Utils.formatElapsedTime(getContext(), usageTimeMs, false)));
+            final CharSequence timeSequence = Utils.formatElapsedTime(getContext(), usageTimeMs,
+                    false);
+            preference.setSummary(
+                    TextUtils.expandTemplate(getText(R.string.battery_used_for), timeSequence));
         }
     }