Show short dates in 7 day view in the sample app

Author: alamkanak

library/src/main/java/com/alamkanak/weekview/WeekView.java

@@ -34,7 +34,7 @@
 
 /**
  * Created by Raquib-ul-Alam Kanak on 7/21/2014.
- * Website: http://alamkanak.me
+ * Website: http://alamkanak.github.io/
  */
 public class WeekView extends View {
 

sample/src/main/java/com/alamkanak/weekview/sample/MainActivity.java

@@ -8,17 +8,20 @@
 import android.view.MenuItem;
 import android.widget.Toast;
 
+import com.alamkanak.weekview.DateTimeInterpreter;
 import com.alamkanak.weekview.WeekView;
 import com.alamkanak.weekview.WeekViewEvent;
 
+import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.List;
+import java.util.Locale;
 
 
 /**
  * Created by Raquib-ul-Alam Kanak on 7/21/2014.
- * Website: http://alamkanak.github.io
+ * Website: http://alamkanak.github.io/
  */
 public class MainActivity extends ActionBarActivity implements WeekView.MonthChangeListener,
         WeekView.EventClickListener, WeekView.EventLongPressListener {
@@ -58,6 +61,7 @@ public boolean onCreateOptionsMenu(Menu menu) {
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         int id = item.getItemId();
+        setupDateTimeInterpreter(id == R.id.action_week_view);
         switch (id){
             case R.id.action_today:
                 mWeekView.goToToday();
@@ -103,6 +107,34 @@ public boolean onOptionsItemSelected(MenuItem item) {
         return super.onOptionsItemSelected(item);
     }
 
+    /**
+     * Set up a date time interpreter which will show short date values when in week view and long
+     * date values otherwise.
+     * @param shortDate True if the date values should be short.
+     */
+    private void setupDateTimeInterpreter(final boolean shortDate) {
+        mWeekView.setDateTimeInterpreter(new DateTimeInterpreter() {
+            @Override
+            public String interpretDate(Calendar date) {
+                SimpleDateFormat weekdayNameFormat = new SimpleDateFormat("EEE", Locale.getDefault());
+                String weekday = weekdayNameFormat.format(date.getTime());
+                SimpleDateFormat format = new SimpleDateFormat(" M/d", Locale.getDefault());
+
+                // All android api level do not have a standard way of getting the first letter of
+                // the week day name. Hence we get the first char programmatically.
+                // Details: http://stackoverflow.com/questions/16959502/get-one-letter-abbreviation-of-week-day-of-a-date-in-java#answer-16959657
+                if (shortDate)
+                    weekday = String.valueOf(weekday.charAt(0));
+                return weekday + format.format(date.getTime());
+            }
+
+            @Override
+            public String interpretTime(int hour) {
+                return hour > 11 ? (hour - 12) + "PM" : hour + "AM";
+            }
+        });
+    }
+
     @Override
     public List<WeekViewEvent> onMonthChange(int newYear, int newMonth) {
 
@@ -210,8 +242,6 @@ public List<WeekViewEvent> onMonthChange(int newYear, int newMonth) {
         return events;
     }
 
-
-
     private String getEventTitle(Calendar time) {
         return String.format("Event of %02d:%02d %s/%d", time.get(Calendar.HOUR_OF_DAY), time.get(Calendar.MINUTE), time.get(Calendar.MONTH)+1, time.get(Calendar.DAY_OF_MONTH));
     }