Implement hints

app/src/main/java/org/isoron/helpers/DialogHelper.java

@@ -19,8 +19,10 @@ package org.isoron.helpers;
 import android.content.Context;
 import android.content.DialogInterface;
 import android.content.DialogInterface.OnClickListener;
+import android.content.SharedPreferences;
 import android.graphics.Typeface;
 import android.os.Vibrator;
+import android.preference.PreferenceManager;
 import android.view.View;
 import android.view.inputmethod.InputMethodManager;
 import android.widget.TextView;
@@ -49,4 +51,18 @@ public abstract class DialogHelper
         Vibrator vb = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);
         vb.vibrate(duration);
     }
+
+
+    public static void incrementLaunchCount(Context context)
+    {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        int count = prefs.getInt("launch_count", 0);
+        prefs.edit().putInt("launch_count", count + 1).apply();
+    }
+
+    public static int getLaunchCount(Context context)
+    {
+        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+        return prefs.getInt("launch_count", 0);
+    }
 }

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

@@ -24,6 +24,7 @@ import android.preference.PreferenceManager;
 import android.view.Menu;
 import android.view.MenuItem;
 
+import org.isoron.helpers.DialogHelper;
 import org.isoron.helpers.ReplayableActivity;
 import org.isoron.uhabits.fragments.ListHabitsFragment;
 import org.isoron.uhabits.helpers.ReminderHelper;
@@ -33,6 +34,7 @@ public class MainActivity extends ReplayableActivity
         implements ListHabitsFragment.OnHabitClickListener
 {
     private ListHabitsFragment listHabitsFragment;
+    SharedPreferences prefs;
 
     @Override
     protected void onCreate(Bundle savedInstanceState)
@@ -40,20 +42,23 @@ public class MainActivity extends ReplayableActivity
         super.onCreate(savedInstanceState);
         setContentView(R.layout.list_habits_activity);
 
-        PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
+        prefs = PreferenceManager.getDefaultSharedPreferences(this);
-
         listHabitsFragment =
                 (ListHabitsFragment) getFragmentManager().findFragmentById(R.id.fragment1);
 
-        ReminderHelper.createReminderAlarms(MainActivity.this);
+        onStartup();
+    }
 
+    private void onStartup()
+    {
+        PreferenceManager.setDefaultValues(this, R.xml.preferences, false);
+        ReminderHelper.createReminderAlarms(MainActivity.this);
+        DialogHelper.incrementLaunchCount(this);
         showTutorial();
-
     }
 
     private void showTutorial()
     {
-        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(this);
         Boolean firstRun = prefs.getBoolean("pref_first_run", true);
 
         if (firstRun)

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

@@ -16,6 +16,8 @@
 
 package org.isoron.uhabits.fragments;
 
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
 import android.app.Activity;
 import android.app.Fragment;
 import android.content.Context;
@@ -68,6 +70,9 @@ public class ListHabitsFragment extends Fragment
 {
     public static final int INACTIVE_COLOR = Color.rgb(230, 230, 230);
 
+    public static final int HINT_INTERVAL = 5;
+    public static final int HINT_INTERVAL_OFFSET = 2;
+
     public interface OnHabitClickListener
     {
         void onHabitClicked(Habit habit);
@@ -82,12 +87,14 @@ public class ListHabitsFragment extends Fragment
     private int tvNameWidth;
     private int buttonCount;
     private View llEmpty;
+    private View llHint;
 
     private OnHabitClickListener habitClickListener;
     private boolean isShortToggleEnabled;
 
     private HabitListLoader loader;
-    boolean showArchived;
+    private boolean showArchived;
+    private SharedPreferences prefs;
 
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
@@ -106,7 +113,6 @@ public class ListHabitsFragment extends Fragment
         tvNameHeader = (TextView) view.findViewById(R.id.tvNameHeader);
 
         ProgressBar progressBar = (ProgressBar) view.findViewById(R.id.progressBar);
-        progressBar.setVisibility(View.INVISIBLE);
         loader.setProgressBar(progressBar);
 
         adapter = new ListHabitsAdapter(getActivity());
@@ -126,6 +132,9 @@ public class ListHabitsFragment extends Fragment
         listView.setOnTouchListener(controller);
         listView.setDragEnabled(true);
 
+        llHint = view.findViewById(R.id.llHint);
+        llHint.setOnClickListener(this);
+
         Typeface fontawesome = Typeface.createFromAsset(getActivity().getAssets(),
                 "fontawesome-webfont.ttf");
         ((TextView) view.findViewById(R.id.tvStarEmpty)).setTypeface(fontawesome);
@@ -134,6 +143,8 @@ public class ListHabitsFragment extends Fragment
         loader.updateAllHabits(true);
         setHasOptionsMenu(true);
 
+
+
         return view;
     }
 
@@ -142,8 +153,10 @@ public class ListHabitsFragment extends Fragment
     public void onAttach(Activity activity)
     {
         super.onAttach(activity);
-        habitClickListener = (OnHabitClickListener) activity;
         this.activity = (ReplayableActivity) activity;
+
+        habitClickListener = (OnHabitClickListener) activity;
+        prefs = PreferenceManager.getDefaultSharedPreferences(activity);
     }
 
     @Override
@@ -157,9 +170,9 @@ public class ListHabitsFragment extends Fragment
 
         updateEmptyMessage();
         updateHeader();
-        adapter.notifyDataSetChanged();
+        showNextHint();
 
-        SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
+        adapter.notifyDataSetChanged();
         isShortToggleEnabled = prefs.getBoolean("pref_short_toggle", false);
     }
 
@@ -346,6 +359,44 @@ public class ListHabitsFragment extends Fragment
         activity.executeCommand(c, refreshKey);
     }
 
+    private void hideHint()
+    {
+        llHint.animate().alpha(0f).setDuration(500).setListener(new AnimatorListenerAdapter()
+        {
+            @Override
+            public void onAnimationEnd(Animator animation)
+            {
+                llHint.setVisibility(View.GONE);
+            }
+        });
+    }
+
+    private void showNextHint()
+    {
+        int launchCount = DialogHelper.getLaunchCount(activity);
+        if(launchCount % HINT_INTERVAL == HINT_INTERVAL_OFFSET)
+        {
+            int lastHint = prefs.getInt("last_shown_hint", -1);
+            showHint(lastHint + 1);
+        }
+
+    }
+
+    private void showHint(int number)
+    {
+        String[] hints = activity.getResources().getStringArray(R.array.hints);
+        if(number >= hints.length) return;
+
+        prefs.edit().putInt("last_shown_hint", number).apply();
+
+        TextView tvContent = (TextView) llHint.findViewById(R.id.hintContent);
+        tvContent.setText(hints[number]);
+
+        llHint.setAlpha(0.0f);
+        llHint.setVisibility(View.VISIBLE);
+        llHint.animate().alpha(1f).setDuration(500);
+    }
+
     @Override
     public void drop(int from, int to)
     {
@@ -363,6 +414,10 @@ public class ListHabitsFragment extends Fragment
                 if (isShortToggleEnabled) toggleCheck(v);
                 else activity.showToast(R.string.long_press_to_toggle);
                 break;
+
+            case R.id.llHint:
+                hideHint();
+                break;
         }
     }
 

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

@@ -60,4 +60,32 @@
         android:layout_marginTop="37dp"
         />
 
+    <LinearLayout
+        android:id="@+id/llHint"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:background="@color/indigo_500"
+        android:layout_alignParentBottom="true"
+        android:orientation="vertical"
+        android:animateLayoutChanges="true"
+        android:visibility="invisible"
+        style="@style/cardStyle">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/hint_title"
+            android:textStyle="bold"
+            android:textColor="@color/white"
+            android:layout_weight="5"/>
+
+        <TextView
+            android:id="@+id/hintContent"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:textColor="@color/white"
+            android:layout_weight="5"/>
+
+    </LinearLayout>
+
 </RelativeLayout>

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

@@ -101,4 +101,13 @@
     <string name="settings">Settings</string>
     <string name="snooze_interval">Snooze interval</string>
 
+    <string name="hint_title">Did you know?</string>
+    <string name="hint_drag">To rearrange the entries, you can drag them by the star.</string>
+    <string name="hint_landscape">You can see more days by putting your phone in landscape mode.</string>
+
+    <string-array name="hints">
+        <item>@string/hint_drag</item>
+        <item>@string/hint_landscape</item>
+    </string-array>
+
 </resources>