Add possibility to revert to old graph (Fixes #254)

Author: Paolo Rotolo

app/src/main/java/org/glucosio/android/activity/PreferencesActivity.java

@@ -67,6 +67,8 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.preferences);
 
+
+
         getFragmentManager().beginTransaction()
                 .replace(R.id.preferencesFrame, new MyPreferenceFragment()).commit();
 

app/src/main/java/org/glucosio/android/db/DatabaseHandler.java

@@ -310,7 +310,7 @@ public GlucoseReading getGlucoseReadingById(long id) {
         List<GlucoseReading> gReadings;
         ArrayList<Integer> readings = new ArrayList<Integer>();
 
-        gReadings = GlucoseReading.getGlucoseReadings(whereString);
+        gReadings = GlucoseReading.getGlucoseReadingsWithZeros(whereString);
         int i;
         for (i=0; i < gReadings.size(); i++){
             readings.add(gReadings.get(i).getGlucoseReading());

app/src/main/java/org/glucosio/android/fragment/OverviewFragment.java

@@ -22,10 +22,12 @@
 
 import android.Manifest;
 import android.app.Dialog;
+import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
 import android.graphics.Color;
 import android.os.Build;
 import android.os.Bundle;
+import android.preference.PreferenceManager;
 import android.support.annotation.NonNull;
 import android.support.design.widget.Snackbar;
 import android.support.v4.app.ActivityCompat;
@@ -130,7 +132,7 @@ public View onCreateView(LayoutInflater inflater, ViewGroup container,
         GlucosioApplication app = (GlucosioApplication) getActivity().getApplicationContext();
         presenter = new OverviewPresenter(this, app.getDBHandler());
         if (!presenter.isdbEmpty()) {
-            presenter.loadDatabase();
+            presenter.loadDatabase(isNewGraphEnabled());
         }
 
         mFragmentView = inflater.inflate(R.layout.fragment_overview, container, false);
@@ -139,11 +141,6 @@ public View onCreateView(LayoutInflater inflater, ViewGroup container,
         disableTouchTheft(chart);
         Legend legend = chart.getLegend();
 
-        if (!presenter.isdbEmpty()) {
-            Collections.reverse(presenter.getGlucoseDatetime());
-            Collections.reverse(presenter.getGlucoseType());
-        }
-
         lastReadingTextView = (TextView) mFragmentView.findViewById(R.id.item_history_reading);
         lastDateTextView = (TextView) mFragmentView.findViewById(R.id.fragment_overview_last_date);
         trendTextView = (TextView) mFragmentView.findViewById(R.id.item_history_trend);
@@ -703,6 +700,11 @@ private void loadRandomTip() {
         tipTextView.setText(presenter.getRandomTip(tipsManager));
     }
 
+    private boolean isNewGraphEnabled(){
+        SharedPreferences sharedPref = PreferenceManager.getDefaultSharedPreferences(getActivity().getApplicationContext());
+        return !sharedPref.getBoolean("pref_graph_old", false);
+    }
+
     @NonNull
     public String convertDate(@NonNull final String date) {
         FormatDateTime dateTime = new FormatDateTime(getActivity().getApplicationContext());

app/src/main/java/org/glucosio/android/presenter/OverviewPresenter.java

@@ -69,9 +69,9 @@ public boolean isdbEmpty() {
         return dB.getGlucoseReadings().size() == 0;
     }
 
-    public void loadDatabase() {
+    public void loadDatabase(boolean isNewGraphEnabled) {
         this.glucoseReadings = dB.getGlucoseReadings();
-        this.glucoseGraphObjects = generateGlucoseGraphPoints();
+        this.glucoseGraphObjects = generateGlucoseGraphPoints(isNewGraphEnabled);
         this.glucoseReadingsMonth = dB.getAverageGlucoseReadingsByMonth();
         this.glucoseReadingsWeek = dB.getAverageGlucoseReadingsByWeek();
         this.glucoseDatetimeWeek = dB.getGlucoseDatetimesByWeek();
@@ -240,35 +240,46 @@ public ArrayList<String> getCholesterolReadingsDateTime(){
         return dB.getCholesterolDateTimeAsArray();
     }
 
-    private List<IntGraphObject> generateGlucoseGraphPoints() {
-        DateTime minDateTime = DateTime.now().minusMonths(1).minusDays(15);
-        final List<GlucoseReading> glucoseReadings = dB.getLastMonthGlucoseReadings();
-
-        Collections.sort(glucoseReadings, new Comparator<GlucoseReading>() {
-            public int compare(GlucoseReading o1, GlucoseReading o2) {
-                return o1.getCreated().compareTo(o2.getCreated());
-            }
-        });
-
-        DateTime startDate = glucoseReadings.size() > 0 ?
-                minDateTime : DateTime.now();
-        // This will contain final values
+    private List<IntGraphObject> generateGlucoseGraphPoints(boolean isNewGraphEnabled) {
         final ArrayList<IntGraphObject> finalGraphObjects = new ArrayList<>();
-        // Transfer values from database to ArrayList as GlucoseGraphObjects
-        for (int i=0; i<glucoseReadings.size(); i++){
-            final GlucoseReading reading = glucoseReadings.get(i);
-            final DateTime createdDate = new DateTime(reading.getCreated());
-            //add zero values between current value and last added value
-            addZeroReadings(finalGraphObjects, startDate, createdDate);
-            //add new value
-            finalGraphObjects.add(
-                    new IntGraphObject(createdDate, reading.getReading())
-            );
-            //update start date
-            startDate = createdDate;
+        if (isNewGraphEnabled) {
+            DateTime minDateTime = DateTime.now().minusMonths(1).minusDays(15);
+            final List<GlucoseReading> glucoseReadings = dB.getLastMonthGlucoseReadings();
+
+            Collections.sort(glucoseReadings, new Comparator<GlucoseReading>() {
+                public int compare(GlucoseReading o1, GlucoseReading o2) {
+                    return o1.getCreated().compareTo(o2.getCreated());
+                }
+            });
+
+            DateTime startDate = glucoseReadings.size() > 0 ?
+                    minDateTime : DateTime.now();
+            // Transfer values from database to ArrayList as GlucoseGraphObjects
+            for (int i = 0; i < glucoseReadings.size(); i++) {
+                final GlucoseReading reading = glucoseReadings.get(i);
+                final DateTime createdDate = new DateTime(reading.getCreated());
+                //add zero values between current value and last added value
+                addZeroReadings(finalGraphObjects, startDate, createdDate);
+                //add new value
+                finalGraphObjects.add(
+                        new IntGraphObject(createdDate, reading.getReading())
+                );
+                //update start date
+                startDate = createdDate;
+            }
+            //add last zeros till now
+            addZeroReadings(finalGraphObjects, startDate, DateTime.now());
+        } else {
+            Collections.sort(glucoseReadings, new Comparator<GlucoseReading>() {
+                public int compare(GlucoseReading o1, GlucoseReading o2) {
+                    return o1.getCreated().compareTo(o2.getCreated());
+                }
+            });
+            for (int i = 0; i < glucoseReadings.size(); i++){
+                GlucoseReading glucoseReading = glucoseReadings.get(i);
+                finalGraphObjects.add(new IntGraphObject(new DateTime(glucoseReading.getCreated()), glucoseReading.getReading()));
+            }
         }
-        //add last zeros till now
-        addZeroReadings(finalGraphObjects, startDate, DateTime.now());
 
         return finalGraphObjects;
     }
@@ -282,14 +293,6 @@ private void addZeroReadings(final ArrayList<IntGraphObject> graphObjects,
         }
     }
 
-    public ArrayList<String> getGlucoseType() {
-        return glucoseType;
-    }
-
-    public ArrayList<String> getGlucoseDatetime() {
-        return dB.getGlucoseDateTimeAsArray();
-    }
-
     public ArrayList<String> getGraphGlucoseDateTime(){
         ArrayList<String> glucoseDatetime = new ArrayList<>();
         DateTimeFormatter dateTimeFormatter = DateTimeFormat.forPattern("yyyy-MM-dd HH:mm");

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

@@ -437,4 +437,5 @@
     <string name="activity_backup_drive_button_open_drive">Manage on Drive</string>
     <string name="mmol_mol">mmol/mol</string>
     <string name="mmol_L">mmol/L</string>
+    <string name="preferences_graph_old">Revert to old graph</string>
 </resources>

app/src/main/res/xml/preferences.xml

@@ -23,10 +23,6 @@
         android:dialogTitle="@string/helloactivity_country"
         android:key="pref_country"
         android:title="@string/helloactivity_country" />
-    <ListPreference
-        android:dialogTitle="@string/helloactivity_language"
-        android:key="pref_language"
-        android:title="@string/helloactivity_language" />
     <EditTextPreference
         android:dialogTitle="@string/helloactivity_age"
         android:inputType="number"
@@ -78,6 +74,11 @@
         android:inputType="number"
         android:key="pref_range_max"
         android:title="@string/helloactivity_preferred_range_max" />
+    <SwitchPreference
+        android:id="@+id/preferences_graph_old"
+        android:defaultValue="false"
+        android:key="pref_graph_old"
+        android:title="@string/preferences_graph_old" />
     <SwitchPreference
         android:id="@+id/preferences_font_dyslexia"
         android:defaultValue="false"
@@ -89,4 +90,8 @@
     <Preference
         android:key="about_settings"
         android:title="@string/preferences_about_glucosio" />
+    <ListPreference
+        android:dialogTitle="@string/helloactivity_language"
+        android:key="pref_language"
+        android:title="@string/helloactivity_language" />
 </PreferenceScreen>