Open statistics page when user taps on widget

Closes #19

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

@@ -222,6 +222,13 @@ public class HabitBroadcastReceiver extends BroadcastReceiver
         return PendingIntent.getBroadcast(context, 0, deleteIntent, 0);
     }
 
+    public static PendingIntent buildViewHabitIntent(Context context, Habit habit)
+    {
+        Intent intent = new Intent(context, ShowHabitActivity.class);
+        intent.setData(Uri.parse("content://org.isoron.uhabits/habit/" + habit.getId()));
+        return PendingIntent.getActivity(context, 0, intent, 0);
+    }
+
     private boolean checkWeekday(Intent intent, Habit habit)
     {
         Long timestamp = intent.getLongExtra("timestamp", DateHelper.getStartOfToday());

app/src/main/java/org/isoron/uhabits/widgets/FrequencyWidgetProvider.java

@@ -23,6 +23,7 @@ import android.app.PendingIntent;
 import android.content.Context;
 import android.view.View;
 
+import org.isoron.uhabits.HabitBroadcastReceiver;
 import org.isoron.uhabits.R;
 import org.isoron.uhabits.models.Habit;
 import org.isoron.uhabits.views.HabitFrequencyView;
@@ -41,7 +42,7 @@ public class FrequencyWidgetProvider extends BaseWidgetProvider
     @Override
     protected PendingIntent getOnClickPendingIntent(Context context, Habit habit)
     {
-        return null;
+        return HabitBroadcastReceiver.buildViewHabitIntent(context, habit);
     }
 
     @Override

app/src/main/java/org/isoron/uhabits/widgets/HistoryWidgetProvider.java

@@ -22,6 +22,7 @@ import android.app.PendingIntent;
 import android.content.Context;
 import android.view.View;
 
+import org.isoron.uhabits.HabitBroadcastReceiver;
 import org.isoron.uhabits.R;
 import org.isoron.uhabits.models.Habit;
 import org.isoron.uhabits.views.HabitHistoryView;
@@ -40,7 +41,7 @@ public class HistoryWidgetProvider extends  BaseWidgetProvider
     @Override
     protected PendingIntent getOnClickPendingIntent(Context context, Habit habit)
     {
-        return null;
+        return HabitBroadcastReceiver.buildViewHabitIntent(context, habit);
     }
 
     @Override

app/src/main/java/org/isoron/uhabits/widgets/ScoreWidgetProvider.java

@@ -22,6 +22,7 @@ import android.app.PendingIntent;
 import android.content.Context;
 import android.view.View;
 
+import org.isoron.uhabits.HabitBroadcastReceiver;
 import org.isoron.uhabits.R;
 import org.isoron.uhabits.models.Habit;
 import org.isoron.uhabits.views.HabitScoreView;
@@ -40,7 +41,7 @@ public class ScoreWidgetProvider extends  BaseWidgetProvider
     @Override
     protected PendingIntent getOnClickPendingIntent(Context context, Habit habit)
     {
-        return null;
+        return HabitBroadcastReceiver.buildViewHabitIntent(context, habit);
     }
 
     @Override

app/src/main/java/org/isoron/uhabits/widgets/StreakWidgetProvider.java

@@ -22,6 +22,7 @@ import android.app.PendingIntent;
 import android.content.Context;
 import android.view.View;
 
+import org.isoron.uhabits.HabitBroadcastReceiver;
 import org.isoron.uhabits.R;
 import org.isoron.uhabits.models.Habit;
 import org.isoron.uhabits.views.HabitStreakView;
@@ -40,7 +41,7 @@ public class StreakWidgetProvider extends  BaseWidgetProvider
     @Override
     protected PendingIntent getOnClickPendingIntent(Context context, Habit habit)
     {
-        return null;
+        return HabitBroadcastReceiver.buildViewHabitIntent(context, habit);
     }
 
     @Override