HRV Status (#3953)

Co-authored-by: a0z <a0z@tutamail.com>
Co-committed-by: a0z <a0z@tutamail.com>

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/GBApplication.java

@@ -122,7 +122,7 @@ public class GBApplication extends Application {
     private static SharedPreferences sharedPrefs;
     private static final String PREFS_VERSION = "shared_preferences_version";
     //if preferences have to be migrated, increment the following and add the migration logic in migratePrefs below; see http://stackoverflow.com/questions/16397848/how-can-i-migrate-android-preferences-with-a-new-version
-    private static final int CURRENT_PREFS_VERSION = 30;
+    private static final int CURRENT_PREFS_VERSION = 31;
 
     private static final LimitedQueue<Integer, String> mIDSenderLookup = new LimitedQueue<>(16);
     private static GBPrefs prefs;
@@ -1483,6 +1483,36 @@ public class GBApplication extends Application {
             }
         }
 
+        if (oldVersion < 31) {
+            // Add the new HRV Status tab to all devices
+            try (DBHandler db = acquireDB()) {
+                final DaoSession daoSession = db.getDaoSession();
+                final List<Device> activeDevices = DBHelper.getActiveDevices(daoSession);
+
+                for (final Device dbDevice : activeDevices) {
+                    final SharedPreferences deviceSharedPrefs = GBApplication.getDeviceSpecificSharedPrefs(dbDevice.getIdentifier());
+
+                    final String chartsTabsValue = deviceSharedPrefs.getString("charts_tabs", null);
+                    if (chartsTabsValue == null) {
+                        continue;
+                    }
+
+                    final String newPrefValue;
+                    if (!StringUtils.isBlank(chartsTabsValue)) {
+                        newPrefValue = chartsTabsValue + ",hrvstatus";
+                    } else {
+                        newPrefValue = "hrvstatus";
+                    }
+
+                    final SharedPreferences.Editor deviceSharedPrefsEdit = deviceSharedPrefs.edit();
+                    deviceSharedPrefsEdit.putString("charts_tabs", newPrefValue);
+                    deviceSharedPrefsEdit.apply();
+                }
+            } catch (Exception e) {
+                Log.w(TAG, "error acquiring DB lock");
+            }
+        }
+
         editor.putString(PREFS_VERSION, Integer.toString(CURRENT_PREFS_VERSION));
         editor.apply();
     }

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/charts/ActivityChartsActivity.java

@@ -111,6 +111,9 @@ public class ActivityChartsActivity extends AbstractChartsActivity {
         if(!coordinator.supportsCyclingData()) {
             tabList.remove("cycling");
         }
+        if (!coordinator.supportsHrvMeasurement()) {
+            tabList.remove("hrvstatus");
+        }
         return tabList;
     }
 
@@ -140,6 +143,8 @@ public class ActivityChartsActivity extends AbstractChartsActivity {
                     return new SleepChartFragment();
                 case "sleepweek":
                     return new WeekSleepChartFragment();
+                case "hrvstatus":
+                    return new HRVStatusFragment();
                 case "stress":
                     return new StressChartFragment();
                 case "pai":
@@ -192,6 +197,8 @@ public class ActivityChartsActivity extends AbstractChartsActivity {
                     return getString(R.string.sleepchart_your_sleep);
                 case "sleepweek":
                     return getSleepTitle();
+                case "hrvstatus":
+                    return getString(R.string.pref_header_hrv_status);
                 case "stress":
                     return getString(R.string.menuitem_stress);
                 case "pai":

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/activities/charts/HRVStatusFragment.java

@@ -0,0 +1,367 @@
+/*  Copyright (C) 2017-2024 Andreas Shimokawa, Daniele Gobbetti, José Rebelo
+
+    This file is part of Gadgetbridge.
+
+    Gadgetbridge is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published
+    by the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    Gadgetbridge is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>. */
+package nodomain.freeyourgadget.gadgetbridge.activities.charts;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import com.github.mikephil.charting.charts.Chart;
+import com.github.mikephil.charting.charts.LineChart;
+import com.github.mikephil.charting.components.LegendEntry;
+import com.github.mikephil.charting.components.XAxis;
+import com.github.mikephil.charting.components.YAxis;
+import com.github.mikephil.charting.data.Entry;
+import com.github.mikephil.charting.data.LineData;
+import com.github.mikephil.charting.data.LineDataSet;
+import com.github.mikephil.charting.formatter.ValueFormatter;
+import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+
+import nodomain.freeyourgadget.gadgetbridge.GBApplication;
+import nodomain.freeyourgadget.gadgetbridge.R;
+import nodomain.freeyourgadget.gadgetbridge.database.DBHandler;
+import nodomain.freeyourgadget.gadgetbridge.devices.DeviceCoordinator;
+import nodomain.freeyourgadget.gadgetbridge.devices.TimeSampleProvider;
+import nodomain.freeyourgadget.gadgetbridge.impl.GBDevice;
+import nodomain.freeyourgadget.gadgetbridge.model.HrvSummarySample;
+import nodomain.freeyourgadget.gadgetbridge.model.HrvValueSample;
+
+
+public class HRVStatusFragment extends AbstractChartFragment<HRVStatusFragment.HRVStatusWeeklyData> {
+    protected static final Logger LOG = LoggerFactory.getLogger(HRVStatusFragment.class);
+    protected final int TOTAL_DAYS = 7;
+
+    private LineChart mWeeklyHRVStatusChart;
+    private TextView mHRVStatusSevenDaysAvg;
+    private TextView mHRVStatusSevenDaysAvgStatus; // Balanced, Unbalanced, Low
+    private TextView mHRVStatusLastNight;
+    private TextView mHRVStatusLastNight5MinHighest;
+    private TextView mHRVStatusDayAvg;
+    private TextView mHRVStatusBaseline;
+    private TextView mDateView;
+    protected int CHART_TEXT_COLOR;
+    protected int LEGEND_TEXT_COLOR;
+    protected int TEXT_COLOR;
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        View rootView = inflater.inflate(R.layout.fragment_hrv_status, container, false);
+
+        mWeeklyHRVStatusChart = rootView.findViewById(R.id.hrv_weekly_line_chart);
+        mHRVStatusLastNight = rootView.findViewById(R.id.hrv_status_last_night);
+        mHRVStatusSevenDaysAvg = rootView.findViewById(R.id.hrv_status_seven_days_avg);
+        mHRVStatusSevenDaysAvgStatus = rootView.findViewById(R.id.hrv_status_seven_days_avg_rate);
+        mHRVStatusLastNight5MinHighest = rootView.findViewById(R.id.hrv_status_last_night_highest_5);
+        mHRVStatusDayAvg = rootView.findViewById(R.id.hrv_status_day_avg);
+        mHRVStatusBaseline = rootView.findViewById(R.id.hrv_status_baseline);
+        mDateView = rootView.findViewById(R.id.hrv_status_date_view);
+
+        setupLineChart();
+        refresh();
+
+        return rootView;
+    }
+
+    @Override
+    public String getTitle() {
+        return getString(R.string.pref_header_hrv_status);
+    }
+
+    @Override
+    protected void init() {
+        TEXT_COLOR = GBApplication.getTextColor(getContext());
+        LEGEND_TEXT_COLOR = GBApplication.getTextColor(getContext());
+        CHART_TEXT_COLOR = GBApplication.getSecondaryTextColor(getContext());
+    }
+
+    @Override
+    protected HRVStatusWeeklyData refreshInBackground(ChartsHost chartsHost, DBHandler db, GBDevice device) {
+        Calendar day = Calendar.getInstance();
+        Date tsEnd = getChartsHost().getEndDate();
+        day.setTime(tsEnd);
+        String formattedDate = new SimpleDateFormat("E, MMM dd").format(tsEnd);
+        mDateView.setText(formattedDate);
+        List<HRVStatusDayData> weeklyData = getWeeklyData(db, day, device);
+        return new HRVStatusWeeklyData(weeklyData);
+    }
+
+    @Override
+    protected void renderCharts() {
+        mWeeklyHRVStatusChart.invalidate();
+    }
+
+    protected LineDataSet createDataSet(final List<Entry> values) {
+        final LineDataSet lineDataSet = new LineDataSet(values, getString(R.string.hrv_status_day_avg));
+        lineDataSet.setColor(getResources().getColor(R.color.hrv_status_char_line_color));
+        lineDataSet.setDrawCircles(false);
+        lineDataSet.setLineWidth(2f);
+        lineDataSet.setFillAlpha(255);
+        lineDataSet.setCircleRadius(5f);
+        lineDataSet.setDrawCircles(true);
+        lineDataSet.setDrawCircleHole(true);
+        lineDataSet.setCircleColor(getResources().getColor(R.color.hrv_status_char_line_color));
+        lineDataSet.setAxisDependency(YAxis.AxisDependency.LEFT);
+        lineDataSet.setDrawValues(true);
+        lineDataSet.setValueTextSize(10f);
+        lineDataSet.setValueTextColor(CHART_TEXT_COLOR);
+        lineDataSet.setValueFormatter(new ValueFormatter() {
+            @Override
+            public String getFormattedValue(float value) {
+                return String.format(Locale.ROOT, "%d", (int) value);
+            }
+        });
+        return lineDataSet;
+    }
+
+    @Override
+    protected void updateChartsnUIThread(HRVStatusWeeklyData weeklyData) {
+        mWeeklyHRVStatusChart.setData(null); // workaround for https://github.com/PhilJay/MPAndroidChart/issues/2317
+        List<Entry> lineEntries = new ArrayList<>();
+        final List<ILineDataSet> lineDataSets = new ArrayList<>();
+        weeklyData.getDaysData().forEach((HRVStatusDayData day) -> {
+            if (day.status.getNum() > 0) {
+                lineEntries.add(new Entry(day.i, day.dayAvg));
+            } else {
+                if (!lineEntries.isEmpty()) {
+                    lineDataSets.add(createDataSet(lineEntries));
+                    lineEntries.clear();
+                }
+            }
+        });
+        if (!lineEntries.isEmpty()) {
+            lineDataSets.add(createDataSet(lineEntries));
+        }
+
+        List<LegendEntry> legendEntries = new ArrayList<>(1);
+        LegendEntry activityEntry = new LegendEntry();
+        activityEntry.label = getString(R.string.hrv_status_day_avg_legend);
+        activityEntry.formColor = getResources().getColor(R.color.hrv_status_char_line_color);
+        legendEntries.add(activityEntry);
+        mWeeklyHRVStatusChart.getLegend().setTextColor(LEGEND_TEXT_COLOR);
+        mWeeklyHRVStatusChart.getLegend().setCustom(legendEntries);
+
+        final LineData lineData = new LineData(lineDataSets);
+        mWeeklyHRVStatusChart.setData(lineData);
+
+        final XAxis x = mWeeklyHRVStatusChart.getXAxis();
+        x.setValueFormatter(getHRVStatusChartDayValueFormatter(weeklyData));
+
+        HRVStatusDayData today = weeklyData.getCurrentDay();
+        mHRVStatusSevenDaysAvg.setText(today.weeklyAvg > 0 ? getString(R.string.hrv_status_unit, today.weeklyAvg) : "-");
+        mHRVStatusLastNight.setText(today.lastNight > 0 ? getString(R.string.hrv_status_unit, today.lastNight) : "-");
+        mHRVStatusLastNight5MinHighest.setText(today.lastNight5MinHigh > 0 ? getString(R.string.hrv_status_unit, today.lastNight5MinHigh) : "-");
+        mHRVStatusDayAvg.setText(today.dayAvg > 0 ? getString(R.string.hrv_status_unit, today.dayAvg) : "-");
+        mHRVStatusBaseline.setText(today.baseLineBalancedLower > 0 && today.baseLineBalancedUpper > 0 ? getString(R.string.hrv_status_baseline, today.baseLineBalancedLower, today.baseLineBalancedUpper) : "-");
+        switch (today.status.getNum()) {
+            case 0:
+                mHRVStatusSevenDaysAvgStatus.setText("-");
+                mHRVStatusSevenDaysAvgStatus.setTextColor(TEXT_COLOR);
+                break;
+            case 1:
+                mHRVStatusSevenDaysAvgStatus.setText(getString(R.string.hrv_status_poor));
+                mHRVStatusSevenDaysAvgStatus.setTextColor(getResources().getColor(R.color.hrv_status_poor));
+                break;
+            case 2:
+                mHRVStatusSevenDaysAvgStatus.setText(getString(R.string.hrv_status_low));
+                mHRVStatusSevenDaysAvgStatus.setTextColor(getResources().getColor(R.color.hrv_status_low));
+                break;
+            case 3:
+                mHRVStatusSevenDaysAvgStatus.setText(getString(R.string.hrv_status_unbalanced));
+                mHRVStatusSevenDaysAvgStatus.setTextColor(getResources().getColor(R.color.hrv_status_unbalanced));
+                break;
+            case 4:
+                mHRVStatusSevenDaysAvgStatus.setText(getString(R.string.hrv_status_balanced));
+                mHRVStatusSevenDaysAvgStatus.setTextColor(getResources().getColor(R.color.hrv_status_balanced));
+                break;
+        }
+    }
+
+    private List<HRVStatusDayData> getWeeklyData(DBHandler db, Calendar day, GBDevice device) {
+        day = (Calendar) day.clone(); // do not modify the caller's argument
+        day.add(Calendar.DATE, -TOTAL_DAYS);
+
+        List<HRVStatusDayData> weeklyData = new ArrayList<>();
+        for (int counter = 0; counter < TOTAL_DAYS; counter++) {
+            int startTs = (int) (day.getTimeInMillis() / 1000);
+            int endTs = startTs + 24 * 60 * 60 - 1;
+            day.add(Calendar.DATE, 1);
+            List<? extends HrvSummarySample> summarySamples = getSamples(db, device, startTs, endTs);
+            List<? extends HrvValueSample> valueSamples = getHrvValueSamples(db, device, startTs, endTs);
+
+            int avgHRV = (int) valueSamples.stream().mapToInt(v -> {return v.getValue();}).average().orElse(0);
+            if (!summarySamples.isEmpty()) {
+                int finalCounter = counter;
+                Calendar finalDay = (Calendar) day.clone();
+                summarySamples.forEach(sample -> {
+                    weeklyData.add(new HRVStatusDayData(
+                            finalDay,
+                            finalCounter,
+                            sample.getTimestamp(),
+                            avgHRV, sample.getWeeklyAverage(),
+                            sample.getLastNightAverage(),
+                            sample.getLastNight5MinHigh(),
+                            sample.getBaselineBalancedLower(),
+                            sample.getBaselineBalancedUpper(),
+                            sample.getStatus()
+                    ));
+                });
+            } else {
+                HRVStatusDayData d = new HRVStatusDayData(
+                        (Calendar) day.clone(),
+                        counter,
+                        0,
+                        avgHRV,
+                        0,
+                        0,
+                        0,
+                        0,
+                        0,
+                        HrvSummarySample.Status.NONE
+                );
+                weeklyData.add(d);
+            }
+        }
+        return weeklyData;
+    }
+
+    private List<? extends HrvSummarySample> getSamples(final DBHandler db, final GBDevice device, int tsFrom, int tsTo) {
+        final DeviceCoordinator coordinator = device.getDeviceCoordinator();
+        final TimeSampleProvider<? extends HrvSummarySample> sampleProvider = coordinator.getHrvSummarySampleProvider(device, db.getDaoSession());
+        return sampleProvider.getAllSamples(tsFrom * 1000L, tsTo * 1000L);
+    }
+
+    public List<? extends HrvValueSample> getHrvValueSamples(final DBHandler db, final GBDevice device, int tsFrom, int tsTo) {
+        final DeviceCoordinator coordinator = device.getDeviceCoordinator();
+        final TimeSampleProvider<? extends HrvValueSample> sampleProvider = coordinator.getHrvValueSampleProvider(device, db.getDaoSession());
+        return sampleProvider.getAllSamples(tsFrom * 1000L, tsTo * 1000L);
+    }
+
+    private void setupLineChart() {
+        mWeeklyHRVStatusChart.getDescription().setEnabled(false);
+        mWeeklyHRVStatusChart.setTouchEnabled(false);
+        mWeeklyHRVStatusChart.setPinchZoom(false);
+        mWeeklyHRVStatusChart.setDoubleTapToZoomEnabled(false);
+
+
+        final XAxis xAxisBottom = mWeeklyHRVStatusChart.getXAxis();
+        xAxisBottom.setPosition(XAxis.XAxisPosition.BOTTOM);
+        xAxisBottom.setDrawLabels(true);
+        xAxisBottom.setDrawGridLines(false);
+        xAxisBottom.setEnabled(true);
+        xAxisBottom.setDrawLimitLinesBehindData(true);
+        xAxisBottom.setAxisMaximum(6 + 0.5f);
+        xAxisBottom.setAxisMinimum(0 - 0.5f);
+        xAxisBottom.setTextColor(CHART_TEXT_COLOR);
+
+        final YAxis yAxisLeft = mWeeklyHRVStatusChart.getAxisLeft();
+        yAxisLeft.setDrawGridLines(true);
+        yAxisLeft.setAxisMaximum(120);
+        yAxisLeft.setAxisMinimum(0);
+        yAxisLeft.setDrawTopYLabelEntry(false);
+        yAxisLeft.setEnabled(true);
+        yAxisLeft.setTextColor(CHART_TEXT_COLOR);
+
+        final YAxis yAxisRight = mWeeklyHRVStatusChart.getAxisRight();
+        yAxisRight.setEnabled(true);
+        yAxisRight.setDrawLabels(false);
+        yAxisRight.setDrawGridLines(false);
+        yAxisRight.setDrawAxisLine(true);
+    }
+
+    ValueFormatter getHRVStatusChartDayValueFormatter(HRVStatusWeeklyData weeklyData) {
+        return new ValueFormatter() {
+            @Override
+            public String getFormattedValue(float value) {
+                return formatHRVStatusChartValue((long) value, weeklyData);
+            }
+        };
+    }
+
+    protected String formatHRVStatusChartValue(long value, HRVStatusWeeklyData weeklyData) {
+        HRVStatusDayData day = weeklyData.getDay((int) value);
+        SimpleDateFormat formatLetterDay = new SimpleDateFormat("EEEEE", Locale.getDefault());
+        return formatLetterDay.format(new Date(day.day.getTimeInMillis()));
+    }
+
+    protected void setupLegend(Chart chart) {}
+
+    protected static class HRVStatusWeeklyData extends ChartsData {
+        private final List<HRVStatusDayData> data;
+
+        public HRVStatusWeeklyData(final List<HRVStatusDayData> chartsData) {
+            this.data = chartsData;
+        }
+
+        public HRVStatusDayData getDay(int i) {
+            return this.data.get(i);
+        }
+
+        public HRVStatusDayData getCurrentDay() {
+            return this.data.get(this.data.size() - 1);
+        }
+
+        public List<HRVStatusDayData> getDaysData() {
+            return data;
+        }
+    }
+
+    protected static class HRVStatusDayData {
+        public Integer i;
+        public long timestamp;
+        public Integer weeklyAvg;
+        public Integer lastNight;
+        public Integer lastNight5MinHigh;
+        public Integer dayAvg;
+        public Integer baseLineBalancedLower;
+        public Integer baseLineBalancedUpper;
+        public HrvSummarySample.Status status;
+        public Calendar day;
+
+        public HRVStatusDayData(Calendar day,
+                                int i, long timestamp,
+                                Integer dayAvg,
+                                Integer weeklyAvg,
+                                Integer lastNight,
+                                Integer lastNight5MinHigh,
+                                Integer baseLineBalancedLower,
+                                Integer baseLineBalancedUpper,
+                                HrvSummarySample.Status status) {
+            this.lastNight = lastNight;
+            this.weeklyAvg = weeklyAvg;
+            this.lastNight5MinHigh = lastNight5MinHigh;
+            this.i = i;
+            this.timestamp = timestamp;
+            this.status = status;
+            this.day = day;
+            this.dayAvg = dayAvg;
+            this.baseLineBalancedLower = baseLineBalancedLower;
+            this.baseLineBalancedUpper = baseLineBalancedUpper;
+        }
+    }
+}

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/devices/huami/amazfitactive/AmazfitActiveCoordinator.java

@@ -79,4 +79,5 @@ public class AmazfitActiveCoordinator extends ZeppOsCoordinator {
     public boolean supportsBluetoothPhoneCalls(final GBDevice device) {
         return true;
     }
+
 }

app/src/main/res/layout/fragment_hrv_status.xml

@@ -0,0 +1,263 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context="nodomain.freeyourgadget.gadgetbridge.activities.HRVStatus$PlaceholderFragment">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <TextView
+            android:id="@+id/hrv_status_date_view"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center"
+            android:textSize="20sp"
+            android:layout_marginTop="15dp"
+            />
+
+        <TableLayout
+            android:layout_width="fill_parent"
+            android:layout_height="fill_parent"
+            android:layout_marginTop="5dp"
+            android:layout_marginBottom="30dp"
+            android:layout_weight="3"
+            android:shrinkColumns="*"
+            android:stretchColumns="*">
+
+            <TableRow
+                android:id="@+id/tableRow1"
+                android:layout_width="fill_parent"
+                android:layout_height="wrap_content"
+                android:weightSum="2">
+
+
+                <LinearLayout
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:orientation="vertical"
+                    android:paddingLeft="20dip"
+                    android:paddingTop="20dip"
+                    android:paddingRight="20dip">
+
+                    <View
+                        android:layout_width="fill_parent"
+                        android:layout_height="5px"
+                        android:background="@color/value_line_color" />
+
+                    <TextView
+                        android:id="@+id/hrv_status_seven_days_avg"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="left"
+                        android:layout_marginTop="20dip"
+                        android:text="-"
+                        android:textSize="20sp" />
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="left"
+                        android:text="@string/hrv_status_seven_days_avg"
+                        android:textSize="12sp" />
+                </LinearLayout>
+
+
+                <LinearLayout
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:orientation="vertical"
+                    android:paddingLeft="20dip"
+                    android:paddingTop="20dip"
+                    android:paddingRight="20dip">
+
+                    <View
+                        android:layout_width="fill_parent"
+                        android:layout_height="5px"
+                        android:background="@color/value_line_color" />
+
+                    <TextView
+                        android:id="@+id/hrv_status_seven_days_avg_rate"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="left"
+                        android:layout_marginTop="20dip"
+                        android:text="-"
+                        android:textSize="20sp" />
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="left"
+                        android:text="@string/hrv_status_seven_days_avg_status"
+                        android:textSize="12sp" />
+                </LinearLayout>
+            </TableRow>
+
+            <TableRow
+                android:id="@+id/tableRow3"
+                android:layout_width="fill_parent"
+                android:layout_height="wrap_content"
+                android:weightSum="2">
+
+                <LinearLayout
+                    android:id="@+id/hrv_status_day_avg_wrapper"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:gravity="center"
+                    android:orientation="vertical"
+                    android:paddingLeft="20dip"
+                    android:paddingTop="20dip"
+                    android:paddingRight="20dip">
+
+                    <View
+                        android:layout_width="fill_parent"
+                        android:layout_height="5px"
+                        android:background="@color/value_line_color" />
+
+                    <TextView
+                        android:id="@+id/hrv_status_day_avg"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="start"
+                        android:layout_marginTop="20dip"
+                        android:text="-"
+                        android:textSize="20sp" />
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="start"
+                        android:text="@string/hrv_status_day_avg"
+                        android:textSize="12sp" />
+                </LinearLayout>
+
+                <LinearLayout
+                    android:id="@+id/hrv_status_baseline_wrapper"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:gravity="center"
+                    android:orientation="vertical"
+                    android:paddingLeft="20dip"
+                    android:paddingTop="20dip"
+                    android:paddingRight="20dip">
+
+                    <View
+                        android:layout_width="fill_parent"
+                        android:layout_height="5px"
+                        android:background="@color/value_line_color" />
+
+                    <TextView
+                        android:id="@+id/hrv_status_baseline"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="start"
+                        android:layout_marginTop="20dip"
+                        android:text="-"
+                        android:textSize="20sp" />
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="start"
+                        android:text="@string/hrv_status_baseline_label"
+                        android:textSize="12sp" />
+                </LinearLayout>
+
+            </TableRow>
+
+            <TableRow
+                android:id="@+id/tableRow2"
+                android:layout_width="fill_parent"
+                android:layout_height="wrap_content"
+                android:weightSum="2">
+
+                <LinearLayout
+                    android:id="@+id/sleep_chart_legend_rem_time_wrapper"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:gravity="center"
+                    android:orientation="vertical"
+                    android:paddingLeft="20dip"
+                    android:paddingTop="20dip"
+                    android:paddingRight="20dip">
+
+                    <View
+                        android:layout_width="fill_parent"
+                        android:layout_height="5px"
+                        android:background="@color/value_line_color" />
+
+                    <TextView
+                        android:id="@+id/hrv_status_last_night"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="start"
+                        android:layout_marginTop="20dip"
+                        android:text="-"
+                        android:textSize="20sp" />
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="start"
+                        android:text="@string/hrv_status_last_night"
+                        android:textSize="12sp" />
+                </LinearLayout>
+
+                <LinearLayout
+                    android:id="@+id/hrv_status_last_night_highest_5_wrapper"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_weight="1"
+                    android:gravity="center"
+                    android:orientation="vertical"
+                    android:paddingLeft="20dip"
+                    android:paddingTop="20dip"
+                    android:paddingRight="20dip">
+
+                    <View
+                        android:layout_width="fill_parent"
+                        android:layout_height="5px"
+                        android:background="@color/value_line_color" />
+
+                    <TextView
+                        android:id="@+id/hrv_status_last_night_highest_5"
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="start"
+                        android:layout_marginTop="20dip"
+                        android:text="-"
+                        android:textSize="20sp" />
+
+                    <TextView
+                        android:layout_width="wrap_content"
+                        android:layout_height="wrap_content"
+                        android:layout_gravity="start"
+                        android:text="@string/hrv_status_last_night_highest_5"
+                        android:textSize="12sp" />
+                </LinearLayout>
+            </TableRow>
+
+        </TableLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="250sp">
+
+            <com.github.mikephil.charting.charts.LineChart
+                android:id="@+id/hrv_weekly_line_chart"
+                android:layout_width="fill_parent"
+                android:layout_height="fill_parent"
+                android:layout_weight="2" />
+        </LinearLayout>
+
+    </LinearLayout>
+
+</RelativeLayout>

app/src/main/res/values/arrays.xml

@@ -3011,6 +3011,7 @@
         <item>@string/sleepchart_your_sleep</item>
         <item>@string/weeksleepchart_sleep_a_week_or_month</item>
         <item>@string/weekstepschart_steps_a_week_or_month</item>
+        <item>@string/pref_header_hrv_status</item>
         <item>@string/menuitem_stress</item>
         <item>@string/menuitem_pai</item>
         <item>@string/stats_title</item>
@@ -3025,6 +3026,7 @@
         <item>@string/p_sleep</item>
         <item>@string/p_sleep_week</item>
         <item>@string/p_steps_week</item>
+        <item>@string/p_hrv_status</item>
         <item>@string/p_stress</item>
         <item>@string/p_pai</item>
         <item>@string/p_speed_zones</item>
@@ -3039,6 +3041,7 @@
         <item>@string/p_activity_list</item>
         <item>@string/p_sleep</item>
         <item>@string/p_sleep_week</item>
+        <item>@string/p_hrv_status</item>
         <item>@string/p_steps_week</item>
         <item>@string/p_stress</item>
         <item>@string/p_pai</item>

app/src/main/res/values/colors.xml

@@ -43,6 +43,14 @@
     <color name="chart_stress_moderate" type="color">#ffab40</color>
     <color name="chart_stress_high" type="color">#8B0000</color>
 
+    <color name="hrv_status_balanced" type="color">#0c8a03</color>
+    <color name="hrv_status_unbalanced" type="color">#fc9d03</color>
+    <color name="hrv_status_low" type="color">#fc5203</color>
+    <color name="hrv_status_poor" type="color">#be03fc</color>
+    <color name="hrv_status_char_line_color" type="color">#d12a2a</color>
+
+    <color name="value_line_color" type="color">#858585</color>
+
     <color name="alternate_row_background_light">#FFEDEDED</color>
     <color name="alternate_row_background_dark">#545254</color>
 

app/src/main/res/values/strings.xml

@@ -842,6 +842,7 @@
     <string name="prefs_charts_tabs">Charts tabs</string>
     <string name="prefs_charts_tabs_summary">Visible chart tabs</string>
     <string name="sleepchart_your_sleep">Sleep</string>
+    <string name="hrv_status">HRV Status</string>
     <string name="weeksleepchart_sleep_a_week">Sleep per week</string>
     <string name="weeksleepchart_today_sleep_description">Sleep today, target: %1$s</string>
     <string name="weekstepschart_steps_a_week">Steps per week</string>
@@ -1438,6 +1439,20 @@
     <string name="activity_summary_detail_editing_gpx_track">Editing linked GPX track</string>
     <string name="activity_summary_today">Today</string>
     <string name="activity_summary_yesterday">Yesterday</string>
+    <string name="hrv_status_day_avg">DAY AVG</string>
+    <string name="hrv_status_day_avg_legend">DAY AVG(MS)</string>
+    <string name="hrv_status_seven_days_avg">7 DAY AVG</string>
+    <string name="hrv_status_seven_days_avg_status">STATUS</string>
+    <string name="hrv_status_balanced">Balanced</string>
+    <string name="hrv_status_unbalanced">Unbalanced</string>
+    <string name="hrv_status_low">Low</string>
+    <string name="hrv_status_poor">Poor</string>
+    <string name="hrv_status_last_night">LAST NIGHT</string>
+    <string name="hrv_status_last_night_highest_5">LST N HIGHEST 5-MIN AVG</string>
+    <string name="hrv_status_seven_days_avg_long">7 DAY AVERAGE</string>
+    <string name="hrv_status_unit">%1$d ms</string>
+    <string name="hrv_status_baseline">%1$d-%2$d ms</string>
+    <string name="hrv_status_baseline_label">BASELINE</string>
     <string name="activity_type_biking">Biking</string>
     <string name="activity_type_treadmill">Treadmill</string>
     <string name="activity_type_exercise">Exercise</string>
@@ -2298,6 +2313,7 @@
     <string name="pref_header_heartrate_alerts">Heart rate alerts</string>
     <string name="pref_header_stress">Stress</string>
     <string name="pref_header_spo2">Blood Oxygen</string>
+    <string name="pref_header_hrv_status">HRV Status</string>
     <string name="pref_header_sony_ambient_sound_control">Ambient Sound Control</string>
     <string name="pref_header_sony_sound_control">Sound Control</string>
     <string name="pref_header_sony_device_info">Device Information</string>

app/src/main/res/values/values.xml

@@ -105,6 +105,7 @@
     <item name="p_stress" type="string">stress</item>
     <item name="p_pai" type="string">pai</item>
     <item name="p_speed_zones" type="string">speedzones</item>
+    <item name="p_hrv_status" type="string">hrvstatus</item>
     <item name="p_live_stats" type="string">livestats</item>
     <item name="p_spo2" type="string">spo2</item>
     <item name="p_temperature" type="string">temperature</item>