修改了函数首字符为小写字母

src/DateTimePickerDialog.java

@@ -36,7 +36,7 @@ public class DateTimePickerDialog extends AlertDialog implements OnClickListener
     private DateTimePicker mDateTimePicker;
 
     public interface onDateTimeSetListener {
-        void OnDateTimeSet(AlertDialog dialog, long date);
+        void onDateTimeSet(AlertDialog dialog, long date);
     }
 
     public DateTimePickerDialog(Context context, long date) {