There is a method on Android that is more powerful than ios url schemes. Intentions And it really is really more powerful!
You can open a calendar or add a calendar event using intent (and many other uses, such as open twitter, share an image on whatsapp, create a note on Evernote ...)
In this link you can find a solution. Take care of android <4.0, because the calendar api is changing and standardizing on Android 4.0. Read this post too
To add a calendar event, you follow the following code: (this is an example, maybe you are not using all of this, or maybe your date format is different)
/** * Creates a calendar event * * @param ce calendar event information * @return */ protected static boolean createCalendarEvent(Context context, CalendarEventCustomObject ce) { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) return createCalendarEventIceCream(context, ce); else return createCalendarEventNormal(context, ce); } @SuppressLint("SimpleDateFormat") protected static boolean createCalendarEventNormal(Context context, CalendarEventCustomObject ce) { try { Intent calIntent = new Intent(Intent.ACTION_EDIT); calIntent.setType("vnd.android.cursor.item/event"); calIntent.putExtra("title", ce.description); calIntent.putExtra("eventLocation", ce.location); calIntent.putExtra("description", ce.summary); calIntent.putExtra("calendar_id", ce.id); // Add date info SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ"); SimpleDateFormat df2 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mmZ"); Long start = Utils.parseDate(ce.start, df); if (start == null) { start = Utils.parseDate(ce.start, df2); if (start == null) start = System.currentTimeMillis(); } Long end = Utils.parseDate(ce.end, df); if (end == null) { end = Utils.parseDate(ce.end, df2); if (end == null) end = System.currentTimeMillis(); } calIntent.putExtra("beginTime", start); calIntent.putExtra("endTime", end); context.startActivity(calIntent); return true; } catch (Exception e) { return false; } } @SuppressLint("NewApi") protected static boolean createCalendarEventIceCream(Context context, CalendarEventCustomObject ce) { try { Intent calIntent = new Intent(Intent.ACTION_INSERT); calIntent.setType("vnd.android.cursor.item/event"); // Create intent and add string info calIntent.putExtra(Events.TITLE, ce.description); calIntent.putExtra(Events.EVENT_LOCATION, ce.location); calIntent.putExtra(Events.DESCRIPTION, ce.summary); calIntent.putExtra(Events.CALENDAR_ID, ce.id); // add date info SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd'T'HH:mmZ"); SimpleDateFormat df2 = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssZ"); Long start = Utils.parseDate(ce.start, df); if (start == null) { start = Utils.parseDate(ce.start, df2); if (start == null) start = System.currentTimeMillis(); } Long end = Utils.parseDate(ce.end, df); if (end == null) { end = Utils.parseDate(ce.end, df2); if (end == null) end = System.currentTimeMillis(); } calIntent.putExtra(CalendarContract.EXTRA_EVENT_BEGIN_TIME, start); calIntent.putExtra(CalendarContract.EXTRA_EVENT_END_TIME, end); calIntent.setData(CalendarContract.Events.CONTENT_URI); ((Activity) context).startActivity(calIntent); return true; } catch (Exception e) { return false; } }