Move reminder methods to separate class

app/src/main/java/org/isoron/uhabits/ReminderAlarmReceiver.java

@@ -45,7 +45,7 @@ public class ReminderAlarmReceiver extends BroadcastReceiver
     {
         int delayMinutes = 60;
         Habit habit = Habit.get(ContentUris.parseId(data));
-        MainActivity.createReminderAlarm(context, habit,
+        ReminderHelper.createReminderAlarm(context, habit,
                 new Date().getTime() + delayMinutes * 60 * 1000);
         dismissNotification(context, habit);
     }

app/src/main/java/org/isoron/uhabits/ReminderHelper.java

@@ -0,0 +1,66 @@
+package org.isoron.uhabits;
+
+import android.app.AlarmManager;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Build;
+import android.util.Log;
+
+import org.isoron.uhabits.models.Habit;
+
+import java.text.DateFormat;
+import java.util.Calendar;
+import java.util.Date;
+
+public class ReminderHelper
+{
+    public static void createReminderAlarms(Context context)
+    {
+        for (Habit habit : Habit.getHabitsWithReminder())
+            createReminderAlarm(context, habit, null);
+    }
+
+    public static void createReminderAlarm(Context context, Habit habit, Long reminderTime)
+    {
+        Uri uri = Uri.parse("content://org.isoron.uhabits/habit/" + habit.getId());
+
+        if (reminderTime == null)
+        {
+            Calendar calendar = Calendar.getInstance();
+            calendar.setTimeInMillis(System.currentTimeMillis());
+            calendar.set(Calendar.HOUR_OF_DAY, habit.reminder_hour);
+            calendar.set(Calendar.MINUTE, habit.reminder_min);
+            calendar.set(Calendar.SECOND, 0);
+
+            reminderTime = calendar.getTimeInMillis();
+
+            if (System.currentTimeMillis() > reminderTime)
+            {
+                reminderTime += AlarmManager.INTERVAL_DAY;
+            }
+        }
+
+        Intent alarmIntent = new Intent(context, ReminderAlarmReceiver.class);
+        alarmIntent.setAction(ReminderAlarmReceiver.ACTION_REMIND);
+        alarmIntent.setData(uri);
+
+        PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
+                ((int) (habit.getId() % Integer.MAX_VALUE)) + 1, alarmIntent,
+                PendingIntent.FLAG_UPDATE_CURRENT);
+
+        AlarmManager manager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
+        if (Build.VERSION.SDK_INT >= 19)
+        {
+            manager.setExact(AlarmManager.RTC_WAKEUP, reminderTime, pendingIntent);
+        }
+        else
+        {
+            manager.set(AlarmManager.RTC_WAKEUP, reminderTime, pendingIntent);
+        }
+
+        Log.d("Alarm", String.format("Setting alarm (%s): %s",
+                DateFormat.getDateTimeInstance().format(new Date(reminderTime)), habit.name));
+    }
+}

app/src/main/java/org/isoron/uhabits/dialogs/ListHabitsFragment.java

@@ -3,15 +3,12 @@ package org.isoron.uhabits.dialogs;
 import android.app.Activity;
 import android.app.Fragment;
 import android.content.Context;
-import android.content.Intent;
 import android.graphics.Color;
 import android.graphics.Point;
 import android.graphics.Typeface;
-import android.net.Uri;
 import android.os.Bundle;
 import android.os.Vibrator;
 import android.util.DisplayMetrics;
-import android.util.Log;
 import android.view.ContextMenu;
 import android.view.ContextMenu.ContextMenuInfo;
 import android.view.Display;
@@ -40,30 +37,28 @@ import com.mobeta.android.dslv.DragSortListView.DropListener;
 import org.isoron.helpers.Command;
 import org.isoron.helpers.DateHelper;
 import org.isoron.helpers.DialogHelper.OnSavedListener;
-import org.isoron.uhabits.MainActivity;
+import org.isoron.helpers.ReplayableActivity;
 import org.isoron.uhabits.R;
-import org.isoron.uhabits.ShowHabitActivity;
+import org.isoron.uhabits.ReminderHelper;
 import org.isoron.uhabits.models.Habit;
 
 import java.util.Date;
 import java.util.GregorianCalendar;
 import java.util.Locale;
-import java.util.Random;
 import java.util.TimeZone;
 
 public class ListHabitsFragment extends Fragment
         implements OnSavedListener, OnItemClickListener, OnLongClickListener, DropListener,
         OnClickListener
 {
-
     public interface OnHabitClickListener
     {
-        public void onHabitClicked(Habit habit);
+        void onHabitClicked(Habit habit);
     }
 
     ListHabitsAdapter adapter;
     DragSortListView listView;
-    MainActivity mainActivity;
+    ReplayableActivity activity;
     TextView tvNameHeader;
     long lastLongClick = 0;
     private int tvNameWidth;
@@ -110,8 +105,6 @@ public class ListHabitsFragment extends Fragment
 
         updateEmptyMessage();
 
-        mainActivity = (MainActivity) getActivity();
-
         setHasOptionsMenu(true);
         return view;
     }
@@ -121,6 +114,7 @@ public class ListHabitsFragment extends Fragment
     {
         super.onAttach(activity);
         habitClickListener = (OnHabitClickListener) activity;
+        this.activity = (ReplayableActivity) activity;
     }
 
     @Override
@@ -132,7 +126,7 @@ public class ListHabitsFragment extends Fragment
 
     private void updateHeader()
     {
-        LayoutInflater inflater = mainActivity.getLayoutInflater();
+        LayoutInflater inflater = activity.getLayoutInflater();
         View view = getView();
 
         if (view == null) return;
@@ -223,7 +217,7 @@ public class ListHabitsFragment extends Fragment
     public void onSaved(Command command)
     {
         executeCommand(command);
-        MainActivity.createReminderAlarms(mainActivity);
+        ReminderHelper.createReminderAlarms(activity);
     }
 
     public void notifyDataSetChanged()
@@ -263,7 +257,7 @@ public class ListHabitsFragment extends Fragment
 
     private void executeCommand(Command c)
     {
-        mainActivity.executeCommand(c);
+        activity.executeCommand(c);
     }
 
     @Override