Allow cards to be rendered by the layout editor

app/src/main/java/org/isoron/uhabits/activities/habits/show/views/FrequencyCard.java

@@ -20,6 +20,7 @@
 package org.isoron.uhabits.activities.habits.show.views;
 
 import android.content.*;
+import android.support.annotation.*;
 import android.util.*;
 import android.widget.*;
 
@@ -41,6 +42,7 @@ public class FrequencyCard extends HabitCard
     @BindView(R.id.frequencyChart)
     FrequencyChart chart;
 
+    @Nullable
     private TaskRunner taskRunner;
 
     public FrequencyCard(Context context)
@@ -58,6 +60,7 @@ public class FrequencyCard extends HabitCard
     @Override
     protected void refreshData()
     {
+        if(taskRunner == null) return;
         taskRunner.execute(new RefreshTask());
     }
 
@@ -66,9 +69,12 @@ public class FrequencyCard extends HabitCard
         inflate(getContext(), R.layout.show_habit_frequency, this);
         ButterKnife.bind(this);
 
-        HabitsApplication app =
-            (HabitsApplication) getContext().getApplicationContext();
+        Context appContext = getContext().getApplicationContext();
+        if(appContext instanceof HabitsApplication)
+        {
+            HabitsApplication app = (HabitsApplication) appContext;
             taskRunner = app.getComponent().getTaskRunner();
+        }
 
         if (isInEditMode()) initEditMode();
     }

app/src/main/java/org/isoron/uhabits/activities/habits/show/views/HistoryCard.java

@@ -43,6 +43,7 @@ public class HistoryCard extends HabitCard
     @NonNull
     private Controller controller;
 
+    @Nullable
     private TaskRunner taskRunner;
 
     public HistoryCard(Context context)
@@ -72,6 +73,7 @@ public class HistoryCard extends HabitCard
     @Override
     protected void refreshData()
     {
+        if(taskRunner == null) return;
         taskRunner.execute(new RefreshTask(getHabit()));
     }
 
@@ -80,9 +82,13 @@ public class HistoryCard extends HabitCard
         inflate(getContext(), R.layout.show_habit_history, this);
         ButterKnife.bind(this);
 
-        HabitsApplication app =
-            (HabitsApplication) getContext().getApplicationContext();
+        Context appContext = getContext().getApplicationContext();
+        if (appContext instanceof HabitsApplication)
+        {
+            HabitsApplication app = (HabitsApplication) appContext;
             taskRunner = app.getComponent().getTaskRunner();
+        }
+
         controller = new Controller() {};
         if (isInEditMode()) initEditMode();
     }

app/src/main/java/org/isoron/uhabits/activities/habits/show/views/OverviewCard.java

@@ -25,9 +25,9 @@ import android.util.*;
 import android.widget.*;
 
 import org.isoron.uhabits.*;
+import org.isoron.uhabits.activities.common.views.*;
 import org.isoron.uhabits.models.*;
 import org.isoron.uhabits.tasks.*;
-import org.isoron.uhabits.activities.common.views.*;
 import org.isoron.uhabits.utils.*;
 
 import butterknife.*;
@@ -54,6 +54,7 @@ public class OverviewCard extends HabitCard
 
     private int color;
 
+    @Nullable
     private TaskRunner taskRunner;
 
     public OverviewCard(Context context)
@@ -71,6 +72,7 @@ public class OverviewCard extends HabitCard
     @Override
     protected void refreshData()
     {
+        if(taskRunner == null) return;
         taskRunner.execute(new RefreshTask());
     }
 
@@ -82,9 +84,13 @@ public class OverviewCard extends HabitCard
 
     private void init()
     {
-        HabitsApplication app =
-            (HabitsApplication) getContext().getApplicationContext();
+        Context appContext = getContext().getApplicationContext();
+        if (appContext instanceof HabitsApplication)
+        {
+            HabitsApplication app = (HabitsApplication) appContext;
             taskRunner = app.getComponent().getTaskRunner();
+        }
+
         inflate(getContext(), R.layout.show_habit_overview, this);
         ButterKnife.bind(this);
         cache = new Cache();

app/src/main/java/org/isoron/uhabits/activities/habits/show/views/ScoreCard.java

@@ -50,8 +50,10 @@ public class ScoreCard extends HabitCard
 
     private int bucketSize;
 
+    @Nullable
     private TaskRunner taskRunner;
 
+    @Nullable
     private Preferences prefs;
 
     public ScoreCard(Context context)
@@ -93,21 +95,25 @@ public class ScoreCard extends HabitCard
     @Override
     protected void refreshData()
     {
+        if(taskRunner == null) return;
         taskRunner.execute(new RefreshTask());
     }
 
     private int getDefaultSpinnerPosition()
     {
-        if (isInEditMode()) return 0;
+        if(prefs == null) return 0;
         return prefs.getDefaultScoreSpinnerPosition();
     }
 
     private void init()
     {
-        HabitsApplication app =
-            (HabitsApplication) getContext().getApplicationContext();
+        Context appContext = getContext().getApplicationContext();
+        if (appContext instanceof HabitsApplication)
+        {
+            HabitsApplication app = (HabitsApplication) appContext;
             taskRunner = app.getComponent().getTaskRunner();
             prefs = app.getComponent().getPreferences();
+        }
 
         inflate(getContext(), R.layout.show_habit_score, this);
         ButterKnife.bind(this);
@@ -127,8 +133,7 @@ public class ScoreCard extends HabitCard
 
     private void setBucketSizeFromPosition(int position)
     {
-        if (isInEditMode()) return;
-
+        if(prefs == null) return;
         prefs.setDefaultScoreSpinnerPosition(position);
         bucketSize = BUCKET_SIZES[position];
     }

app/src/main/java/org/isoron/uhabits/activities/habits/show/views/StreakCard.java

@@ -20,6 +20,7 @@
 package org.isoron.uhabits.activities.habits.show.views;
 
 import android.content.*;
+import android.support.annotation.*;
 import android.util.*;
 import android.widget.*;
 
@@ -43,6 +44,7 @@ public class StreakCard extends HabitCard
     @BindView(R.id.streakChart)
     StreakChart streakChart;
 
+    @Nullable
     private TaskRunner taskRunner;
 
     public StreakCard(Context context)
@@ -60,14 +62,18 @@ public class StreakCard extends HabitCard
     @Override
     protected void refreshData()
     {
+        if(taskRunner == null) return;
         taskRunner.execute(new RefreshTask());
     }
 
     private void init()
     {
-        HabitsApplication app =
-            (HabitsApplication) getContext().getApplicationContext();
+        Context appContext = getContext().getApplicationContext();
+        if (appContext instanceof HabitsApplication)
+        {
+            HabitsApplication app = (HabitsApplication) appContext;
             taskRunner = app.getComponent().getTaskRunner();
+        }
 
         inflate(getContext(), R.layout.show_habit_streak, this);
         ButterKnife.bind(this);