Partial merge of the HR history graphs by @AroonPro - still need to add averaging option and then make the x scale user selectable - it is 3 hours at the moment

app/src/main/AndroidManifest.xml

@@ -2,7 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:versionCode="128"
-    android:versionName="4.2.1j">
+    android:versionName="4.2.1k">
     <!-- android:allowBackup="false" -->
     <uses-permission android:name="android.permission.BLUETOOTH" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

app/src/main/java/uk/org/openseizuredetector/FragmentHrAlg.java

@@ -1,5 +1,6 @@
 package uk.org.openseizuredetector;
 
+import android.graphics.Color;
 import android.os.Bundle;
 import android.util.Log;
 import android.view.LayoutInflater;
@@ -7,8 +8,39 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
 
+import androidx.appcompat.widget.SwitchCompat;
+
+import com.github.mikephil.charting.charts.LineChart;
+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.utils.ColorTemplate;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.Objects;
+
+
 public class FragmentHrAlg extends FragmentOsdBaseClass {
     String TAG = "FragmentOsdAlg";
+
+    LineChart lineChart;
+    LineData lineData;
+    LineDataSet lineDataSet;
+    List<Entry> hrHistory = new ArrayList<>();
+    List<Entry> hrAverages = new ArrayList<>();
+    List<String> hrHistoryStrings = new ArrayList<>();
+    List<String> hrAveragesStrings = new ArrayList<>();
+    private List<Entry> listToDisplay;
+    private List<String> listToDisplayStrings;
+
+    private TextView tvAvgAHr;
+    private TextView tvHr;
+    private TextView tv;
+    private TextView tvCurrent;
+    private SwitchCompat switchAverages;
+
     public FragmentHrAlg() {
         // Required empty public constructor
     }
@@ -17,6 +49,16 @@ public class FragmentHrAlg extends FragmentOsdBaseClass {
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        lineDataSet = new LineDataSet(new ArrayList<Entry>(),"Heart rate history" );
+        lineDataSet.setColors(ColorTemplate.JOYFUL_COLORS);
+        lineDataSet.setValueTextColor(Color.BLACK);
+        lineDataSet.setValueTextSize(18f);
+        lineDataSet.setDrawValues(false);
+        //lineDataSetAverage = new LineDataSet(new ArrayList<Entry>(),"Heart rate history" );
+        //lineDataSetAverage.setColors(ColorTemplate.JOYFUL_COLORS);
+        //lineDataSetAverage.setValueTextColor(Color.BLACK);
+        //lineDataSetAverage.setValueTextSize(18f);
+
     }
 
     @Override
@@ -28,16 +70,66 @@ public class FragmentHrAlg extends FragmentOsdBaseClass {
 
     @Override
     protected void updateUi() {
-        Log.d(TAG,"updateUi()");
+        Log.d(TAG, "updateUi()");
-        TextView tv;
+        tv = (TextView) mRootView.findViewById(R.id.fragment_hr_alg_tv1);
-        tv = (TextView)mRootView.findViewById(R.id.fragment_hr_alg_tv1);
+        tvHr = (TextView) mRootView.findViewById(R.id.current_hr_tv);
+        tvAvgAHr = (TextView) mRootView.findViewById(R.id.adaptive_avg_hr_tv);
         if (mConnection.mBound) {
             tv.setText("Bound to Server");
+
+            tvCurrent = mRootView.findViewById(R.id.textView2);
+            if (Objects.nonNull(tvCurrent)) {
+                if (Objects.nonNull(tvHr))
+                    tvHr.setText( String.valueOf((short)mConnection.mSdServer.mSdData.mHR));
+                if (Objects.nonNull(tvAvgAHr))
+                    tvAvgAHr.setText( String.valueOf((short)mConnection.mSdServer.mSdData
+                            .mAdaptiveHrAverage));
+                tvCurrent.setText(new StringBuilder()
+                        .append(mConnection.mSdServer.mSdData.mAdaptiveHrAverage)
+                        .append("\nResult of checks: Adaptive Hr Alarm Standing: ")
+                        .append(mConnection.mSdServer.mSdData.mAdaptiveHrAlarmStanding)
+                        .append("\nAverage Hr Alarm Standing: ")
+                        .append(mConnection.mSdServer.mSdData.mAdaptiveHrAlarmStanding)
+                        .toString());
+
+                switchAverages = mRootView.findViewById(R.id.hr_average_switch);
+
+                if (Objects.nonNull(mConnection.mSdServer.mSdDataSource.mSdAlgHr)) {
+                    Log.v(TAG,"mSdAlgHr si not null");
+                    CircBuf hrHist = mConnection.mSdServer.mSdDataSource.mSdAlgHr.getHrHistBuff();
+                    int nHistArr = hrHist.getNumVals();
+                    double hrHistArr[] = hrHist.getVals();   // This gives us a simple vector of hr values to plot.
+                    if (Objects.nonNull(hrHist) && nHistArr > 0) {
+                        Log.v(TAG, "hrHist.getNumVals="+nHistArr);
+                        lineDataSet.clear();
+                        String xVals[] = new String[nHistArr];
+                        for (int i = 0; i<nHistArr; i++) {
+                            Log.d(TAG,"i="+i+", HR="+hrHistArr[i]);
+                            xVals[i] = String.valueOf(i);
+                            lineDataSet.addEntry(new Entry((float)hrHistArr[i], i));
+                        }
+                        Log.d(TAG,"xVals="+ Arrays.toString(xVals)+ ", lneDataSet="+lineDataSet.toSimpleString());
+                        LineData hrHistLineData = new LineData(xVals, lineDataSet);
+
+                        lineChart = mRootView.findViewById(R.id.lineChart);
+                        lineChart.setData(hrHistLineData);
+
+                        lineChart.getData().notifyDataChanged();
+                        lineChart.notifyDataSetChanged();
+                        lineChart.refreshDrawableState();
+                        lineChart.invalidate();
+                        //if (mConnection.mBound){
+                        //    lineChart.postInvalidate();
+                        //}
+                    }
+
+                }
             } else {
                 tv.setText("****NOT BOUND TO SERVER***");
                 return;
             }
 
 
+        }
     }
 }

app/src/main/java/uk/org/openseizuredetector/SdAlgHr.java

@@ -27,6 +27,7 @@ public class SdAlgHr {
 
     private CircBuf mAdaptiveHrBuff;
     private CircBuf mAverageHrBuff;
+    private CircBuf mHrHist;
 
     public SdAlgHr(Context context) {
         Log.i(TAG, "SdAlgHr Constructor");
@@ -34,6 +35,8 @@ public class SdAlgHr {
         updatePrefs();
         mAdaptiveHrBuff = new CircBuf(mAdaptiveHrAlarmWindowDp, -1.0);
         mAverageHrBuff = new CircBuf(mAverageHrAlarmWindowDp, -1.0);
+        // FIXME - this is a hard coded 3 hour period (at 5 second intervals)
+        mHrHist = new CircBuf((int)(3 * 3600 / 5), -1);
     }
 
     public void close() {
@@ -127,6 +130,8 @@ public class SdAlgHr {
         return mAdaptiveHrBuff;
     }
 
+    public CircBuf getHrHistBuff() { return mHrHist; }
+
     /**
      * Returns the average heart rate being used by the Average heart rate algorithm
      * @return Average Heart rate in bpm.
@@ -183,6 +188,7 @@ public class SdAlgHr {
         Log.v(TAG, "checkHr("+hrVal+")");
         mAdaptiveHrBuff.add(hrVal);
         mAverageHrBuff.add(hrVal);
+        mHrHist.add(hrVal);
         ArrayList<Boolean> retVal = new ArrayList<Boolean>();
         retVal.add(checkSimpleHr(hrVal));
         retVal.add(checkAdaptiveHr(hrVal));

app/src/main/java/uk/org/openseizuredetector/SdDataSource.java

@@ -95,7 +95,7 @@ public abstract class SdDataSource {
     private short mFallWindow;
     private int mMute;  // !=0 means muted by keypress on watch.
     private SdAlgNn mSdAlgNn;
-    private SdAlgHr mSdAlgHr;
+    protected SdAlgHr mSdAlgHr;
 
     // Values for SD_MODE
     private int SIMPLE_SPEC_FMAX = 10;

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

@@ -5,13 +5,15 @@
     android:layout_height="match_parent"
     tools:context=".FragmentOsdBaseClass">
 
+    <!-- TODO: Update blank fragment layout -->
     <androidx.appcompat.widget.LinearLayoutCompat
         android:layout_width="match_parent"
-        android:layout_height="253dp"
+        android:layout_height="match_parent"
         android:background="@color/okBackgroundColor"
         android:orientation="vertical">
-
+        <!-- TODO: Update blank fragment layout -->
         <TextView
+            android:id="@+id/fragment_hr_alg_tv1"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:text="HR Algorithm Status"
@@ -68,11 +70,34 @@
         </androidx.appcompat.widget.LinearLayoutCompat>
 
         <TextView
-            android:id="@+id/fragment_hr_alg_tv1"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:text="Fragment_HrAlg" />
 
+        <TextView
+            android:id="@+id/textView2"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="TextView" />
+
+        <androidx.appcompat.widget.SwitchCompat
+            android:id="@+id/hr_average_switch"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Show averages" />
+
+        <FrameLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+            <com.github.mikephil.charting.charts.LineChart
+                android:id="@+id/lineChart"
+                android:layout_width="fill_parent"
+                android:layout_height="fill_parent">
+
+            </com.github.mikephil.charting.charts.LineChart>
+        </FrameLayout>
+
     </androidx.appcompat.widget.LinearLayoutCompat>