basic graph on everview fragment

app/build.gradle

@@ -31,4 +31,5 @@ dependencies {
     compile 'com.j256.ormlite:ormlite-android:4.46'
     compile 'com.github.tony19:logback-android-classic:1.1.1-4'
     compile 'org.slf4j:slf4j-api:1.7.12'
+    compile 'com.jjoe64:graphview:4.0.1'
 }

app/src/main/java/info/nightscout/androidaps/db/BgReading.java

@@ -2,6 +2,8 @@ package info.nightscout.androidaps.db;
 
 import com.j256.ormlite.field.DatabaseField;
 import com.j256.ormlite.table.DatabaseTable;
+import com.jjoe64.graphview.series.DataPoint;
+import com.jjoe64.graphview.series.DataPointInterface;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -14,7 +16,7 @@ import info.nightscout.client.data.NSCal;
 import info.nightscout.client.data.NSSgv;
 
 @DatabaseTable(tableName = "BgReadings")
-public class BgReading {
+public class BgReading implements DataPointInterface {
     private static Logger log = LoggerFactory.getLogger(BgReading.class);
     public static final DecimalFormat mmolFormat = new DecimalFormat("0.0");
     public static final DecimalFormat mgdlFormat = new DecimalFormat("0");
@@ -45,6 +47,8 @@ public class BgReading {
     @DatabaseField
     public int battery_level;
 
+    public static String units = Constants.MGDL;
+
     public BgReading() {}
 
     public BgReading(NSSgv sgv) {
@@ -77,4 +81,14 @@ public class BgReading {
                 ", battery_level=" + battery_level +
                 '}';
     }
+
+    @Override
+    public double getX() {
+        return timestamp;
+    }
+
+    @Override
+    public double getY() {
+        return valueToUnits(units);
+    }
 }

app/src/main/java/info/nightscout/androidaps/db/DatabaseHelper.java

@@ -1,6 +1,7 @@
 package info.nightscout.androidaps.db;
 
 import java.sql.SQLException;
+import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
 
@@ -11,6 +12,7 @@ import com.j256.ormlite.android.apptools.OrmLiteSqliteOpenHelper;
 import com.j256.ormlite.dao.Dao;
 import com.j256.ormlite.stmt.PreparedQuery;
 import com.j256.ormlite.stmt.QueryBuilder;
+import com.j256.ormlite.stmt.Where;
 import com.j256.ormlite.support.ConnectionSource;
 import com.j256.ormlite.table.TableUtils;
 
@@ -140,4 +142,24 @@ public class DatabaseHelper extends OrmLiteSqliteOpenHelper {
 
         return null;
     }
+
+    public List<BgReading> get12HoursOfBg() {
+        try {
+            Dao<BgReading, Long> daoBgreadings = getDaoBgReadings();
+            List<BgReading> bgReadings;
+            QueryBuilder<BgReading, Long> queryBuilder = daoBgreadings.queryBuilder();
+            queryBuilder.orderBy("timeIndex", false);
+            Where where = queryBuilder.where();
+            long now = new Date().getTime();
+            long dayAgo = now - 12 * 60 * 60 * 1000l;
+            where.ge("timeIndex", (long) Math.ceil(dayAgo / 60000d));
+            PreparedQuery<BgReading> preparedQuery = queryBuilder.prepare();
+            bgReadings = daoBgreadings.query(preparedQuery);
+            return bgReadings;
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+        return new ArrayList<BgReading>();
+    }
+
 }

app/src/main/java/info/nightscout/androidaps/plugins/Overview/OverviewFragment.java

@@ -1,22 +1,24 @@
 package info.nightscout.androidaps.plugins.Overview;
 
 import android.app.Activity;
-import android.content.Context;
+import android.graphics.Color;
-import android.net.Uri;
 import android.os.Bundle;
 import android.support.v4.app.Fragment;
-import android.support.v7.widget.LinearLayoutManager;
-import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.TextView;
 
+import com.jjoe64.graphview.GraphView;
+import com.jjoe64.graphview.helper.DateAsXAxisLabelFormatter;
+import com.jjoe64.graphview.series.PointsGraphSeries;
 import com.squareup.otto.Subscribe;
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.util.List;
+
 import info.nightscout.androidaps.MainApp;
 import info.nightscout.androidaps.R;
 import info.nightscout.androidaps.db.BgReading;
@@ -29,6 +31,7 @@ public class OverviewFragment extends Fragment {
     private static Logger log = LoggerFactory.getLogger(OverviewFragment.class);
 
     TextView bg;
+    GraphView bgGraph;
 
     public static OverviewFragment newInstance() {
         OverviewFragment fragment = new OverviewFragment();
@@ -46,6 +49,9 @@ public class OverviewFragment extends Fragment {
                              Bundle savedInstanceState) {
         View view = inflater.inflate(R.layout.overview_fragment, container, false);
         bg = (TextView) view.findViewById(R.id.overview_bg);
+        bgGraph = (GraphView) view.findViewById(R.id.overview_bggraph);
+
+        updateData();
         return view;
     }
 
@@ -61,8 +67,39 @@ public class OverviewFragment extends Fragment {
     private void updateData() {
         BgReading bgReading = MainApp.getDbHelper().lastBg();
         NSProfile profile = MainApp.getNSProfile();
-        if (profile != null && bgReading != null && bg != null)
+        if (profile != null && bgReading != null && bg != null) {
             bg.setText(bgReading.valueToUnitsToString(profile.getUnits()));
+            BgReading.units = profile.getUnits();
+        }
+
+        // Skip if not initialized yet
+        if (bgGraph == null)
+            return;
+
+        List<BgReading> bgReadingsArray = MainApp.getDbHelper().get12HoursOfBg();
+        BgReading[] bgReadings = new BgReading[bgReadingsArray.size()];
+        bgReadings = bgReadingsArray.toArray(bgReadings);
+
+        PointsGraphSeries<BgReading> series = new PointsGraphSeries<BgReading>(bgReadings);
+        bgGraph.addSeries(series);
+        series.setShape(PointsGraphSeries.Shape.POINT);
+        series.setSize(5);
+        series.setColor(Color.GREEN);
+
+        // set date label formatter
+        bgGraph.getGridLabelRenderer().setLabelFormatter(new DateAsXAxisLabelFormatter(getActivity(), android.text.format.DateFormat.getTimeFormat(getActivity())));
+        bgGraph.getGridLabelRenderer().setNumVerticalLabels(5); // only 4 because of the space
+        //bgGraph.getGridLabelRenderer().setNumHorizontalLabels(3); // only 4 because of the space
+
+        // set manual x bounds to have nice steps
+        bgGraph.getViewport().setMaxX(bgReadings[0].timestamp);
+        bgGraph.getViewport().setMinX(bgReadings[bgReadings.length-1].timestamp);
+        bgGraph.getViewport().setXAxisBoundsManual(true);
+
+        // set manual y bounds to have nice steps
+        bgGraph.getViewport().setMaxY(20);
+        bgGraph.getViewport().setMinY(0);
+        bgGraph.getViewport().setYAxisBoundsManual(true);
     }
 
     @Subscribe

app/src/main/java/info/nightscout/androidaps/plugins/TempBasals/TempBasalsFragment.java

@@ -259,7 +259,7 @@ public class TempBasalsFragment extends Fragment {
     @Subscribe
     public void onStatusEvent(final EventTempBasalChange ev) {
         Activity activity = getActivity();
-        if (activity != null)
+        if (activity != null && recyclerView != null)
             activity.runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
@@ -274,7 +274,7 @@ public class TempBasalsFragment extends Fragment {
     @Subscribe
     public void onStatusEvent(final EventNewBG ev) {
         Activity activity = getActivity();
-        if (activity != null)
+        if (activity != null && recyclerView != null)
             activity.runOnUiThread(new Runnable() {
                 @Override
                 public void run() {

app/src/main/java/info/nightscout/androidaps/plugins/Treatments/TreatmentsFragment.java

@@ -251,7 +251,7 @@ public class TreatmentsFragment extends Fragment implements View.OnClickListener
     @Subscribe
     public void onStatusEvent(final EventTreatmentChange ev) {
         Activity activity = getActivity();
-        if (activity != null)
+        if (activity != null && recyclerView != null)
             activity.runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
@@ -265,7 +265,7 @@ public class TreatmentsFragment extends Fragment implements View.OnClickListener
     @Subscribe
     public void onStatusEvent(final EventNewBG ev) {
         Activity activity = getActivity();
-        if (activity != null)
+        if (activity != null && recyclerView != null)
             activity.runOnUiThread(new Runnable() {
                 @Override
                 public void run() {

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

@@ -5,10 +5,22 @@
     tools:context="info.nightscout.androidaps.plugins.Overview.OverviewFragment">
 
 
+    <LinearLayout
+        android:orientation="vertical"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent">
+
         <TextView
+            android:id="@+id/overview_bg"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-        android:id="@+id/overview_bg"
             android:layout_gravity="left|top"
             android:textSize="100dp" />
+
+        <com.jjoe64.graphview.GraphView
+            android:id="@+id/overview_bggraph"
+            android:layout_width="match_parent"
+            android:layout_height="200dip" />
+    </LinearLayout>
+
 </FrameLayout>