Don't hide 1% battery usage apps but show percentage "-" instead.

Bug b/242252864 will be fixed at the same time.

screen_record: https://drive.google.com/open?id=1ycEuazqQZzNWGO8E2Fh3GdgyTEd2Z9s0&authuser=0&resourcekey=0-x9BJJE6932jIv9fFoecjeQ&usp=drive_link

Bug: 262187603
Bug: 242252864
Fix: 262187603
Fix: 242252864
Test: manual
Change-Id: Id1a8b5291d66a38fb86f168d3115ae566e6ec079

src/com/android/settings/fuelgauge/batteryusage/DataProcessor.java

@@ -83,8 +83,6 @@ public final class DataProcessor {
     private static final BatteryHistEntry EMPTY_BATTERY_HIST_ENTRY =
             new BatteryHistEntry(new ContentValues());
 
-    @VisibleForTesting
-    static final double PERCENTAGE_OF_TOTAL_THRESHOLD = 1f;
     @VisibleForTesting
     static final int SELECTED_INDEX_ALL = BatteryChartViewModel.SELECTED_INDEX_ALL;
     @VisibleForTesting
@@ -441,7 +439,7 @@ public final class DataProcessor {
         insertAllUsageDiffData(resultMap);
         // Compute the apps number before purge. Must put before purgeLowPercentageAndFakeData.
         final int countOfAppBeforePurge = getCountOfApps(resultMap);
-        purgeLowPercentageAndFakeData(context, resultMap);
+        purgeFakeAndHiddenPackages(context, resultMap);
         // Compute the apps number after purge. Must put after purgeLowPercentageAndFakeData.
         final int countOfAppAfterPurge = getCountOfApps(resultMap);
         if (!isUsageMapValid(resultMap, hourlyBatteryLevelsPerDay)) {
@@ -536,7 +534,7 @@ public final class DataProcessor {
 
         // Compute the apps number before purge. Must put before purgeLowPercentageAndFakeData.
         final int countOfAppBeforePurge = getCountOfApps(resultMap);
-        purgeLowPercentageAndFakeData(context, resultMap);
+        purgeFakeAndHiddenPackages(context, resultMap);
         // Compute the apps number after purge. Must put after purgeLowPercentageAndFakeData.
         final int countOfAppAfterPurge = getCountOfApps(resultMap);
 
@@ -1122,7 +1120,7 @@ public final class DataProcessor {
     }
 
     // Removes low percentage data and fake usage data, which will be zero value.
-    private static void purgeLowPercentageAndFakeData(
+    private static void purgeFakeAndHiddenPackages(
             final Context context,
             final Map<Integer, Map<Integer, BatteryDiffData>> resultMap) {
         final Set<CharSequence> backgroundUsageTimeHideList =
@@ -1139,17 +1137,17 @@ public final class DataProcessor {
                 if (diffEntryLists == null) {
                     return;
                 }
-                purgeLowPercentageAndFakeData(
+                purgeFakeAndHiddenPackages(
                         diffEntryLists.getAppDiffEntryList(), backgroundUsageTimeHideList,
                         notAllowShowEntryPackages);
-                purgeLowPercentageAndFakeData(
+                purgeFakeAndHiddenPackages(
                         diffEntryLists.getSystemDiffEntryList(), backgroundUsageTimeHideList,
                         notAllowShowEntryPackages);
             });
         });
     }
 
-    private static void purgeLowPercentageAndFakeData(
+    private static void purgeFakeAndHiddenPackages(
             final List<BatteryDiffEntry> entries,
             final Set<CharSequence> backgroundUsageTimeHideList,
             final CharSequence[] notAllowShowEntryPackages) {
@@ -1157,8 +1155,7 @@ public final class DataProcessor {
         while (iterator.hasNext()) {
             final BatteryDiffEntry entry = iterator.next();
             final String packageName = entry.getPackageName();
-            if (entry.getPercentOfTotal() < PERCENTAGE_OF_TOTAL_THRESHOLD
-                    || ConvertUtils.FAKE_PACKAGE_NAME.equals(packageName)
+            if (ConvertUtils.FAKE_PACKAGE_NAME.equals(packageName)
                     || contains(packageName, notAllowShowEntryPackages)) {
                 iterator.remove();
             }

src/com/android/settings/fuelgauge/batteryusage/PowerGaugePreference.java

@@ -36,6 +36,8 @@ import com.android.settingslib.widget.AppPreference;
  */
 public class PowerGaugePreference extends AppPreference {
 
+    private static final double PERCENTAGE_TO_SHOW_THRESHOLD = 1f;
+
     private BatteryEntry mInfo;
     private BatteryDiffEntry mBatteryDiffEntry;
     private CharSequence mContentDescription;
@@ -75,7 +77,8 @@ public class PowerGaugePreference extends AppPreference {
 
     /** Sets the percent of total. */
     public void setPercent(double percentOfTotal) {
-        mProgress = Utils.formatPercentage(percentOfTotal, true);
+        mProgress = percentOfTotal < PERCENTAGE_TO_SHOW_THRESHOLD
+                ? "-" : Utils.formatPercentage(percentOfTotal, true);
         notifyChanged();
     }
 

tests/robotests/src/com/android/settings/fuelgauge/batteryusage/PowerGaugePreferenceTest.java

@@ -104,4 +104,18 @@ public class PowerGaugePreferenceTest {
         assertThat(mPreferenceViewHolder.findViewById(android.R.id.title).getContentDescription())
                 .isEqualTo(CONTENT_DESCRIPTION);
     }
+
+    @Test
+    public void setPercent_greaterThanThreshold_showNumber() {
+        mPowerGaugePreference.setPercent(99.5);
+
+        assertThat(mPowerGaugePreference.getPercent()).isEqualTo("100%");
+    }
+
+    @Test
+    public void setPercent_lessThanThreshold_showBar() {
+        mPowerGaugePreference.setPercent(0.95);
+
+        assertThat(mPowerGaugePreference.getPercent()).isEqualTo("-");
+    }
 }