Refresh buttons after canceled pick date/time

app/src/main/java/org/tasks/dialogs/DateTimePicker.kt

@@ -272,11 +272,15 @@ class DateTimePicker : InjectingBottomSheetDialogFragment() {
             if (resultCode == RESULT_OK) {
                 val timestamp = data!!.getLongExtra(MyTimePickerDialog.EXTRA_TIMESTAMP, today.millis)
                 returnSelectedTime(newDateTime(timestamp).millisOfDay + 1000)
+            } else {
+                refreshButtons()
             }
         } else if (requestCode == REQUEST_DATE) {
             if (resultCode == RESULT_OK) {
                 val timestamp = data!!.getLongExtra(MyDatePickerDialog.EXTRA_TIMESTAMP, today.millis)
                 returnDate(timestamp)
+            } else {
+                refreshButtons()
             }
         } else {
             super.onActivityResult(requestCode, resultCode, data)

app/src/main/java/org/tasks/dialogs/MyDatePickerDialog.java

@@ -1,5 +1,6 @@
 package org.tasks.dialogs;
 
+import static android.app.Activity.RESULT_CANCELED;
 import static android.app.Activity.RESULT_OK;
 import static org.tasks.time.DateTimeUtils.currentTimeMillis;
 
@@ -73,6 +74,8 @@ public class MyDatePickerDialog extends DatePickerDialog implements OnDateSetLis
 
     if (getTargetFragment() == null) {
       callback.onDatePicked(dialog, NO_DATE);
+    } else {
+      getTargetFragment().onActivityResult(getTargetRequestCode(), RESULT_CANCELED, null);
     }
   }
 

app/src/main/java/org/tasks/dialogs/MyTimePickerDialog.java

@@ -1,5 +1,6 @@
 package org.tasks.dialogs;
 
+import static android.app.Activity.RESULT_CANCELED;
 import static android.app.Activity.RESULT_OK;
 import static org.tasks.date.DateTimeUtils.newDateTime;
 import static org.tasks.time.DateTimeUtils.currentTimeMillis;
@@ -71,6 +72,8 @@ public class MyTimePickerDialog extends TimePickerDialog implements OnTimeSetLis
 
     if (getTargetFragment() == null) {
       callback.onTimePicked(NO_TIME);
+    } else {
+      getTargetFragment().onActivityResult(getTargetRequestCode(), RESULT_CANCELED, null);
     }
   }