Android Learning Tutorials Calendar Library use (_android)

This tutorial for you to share the use of the Android Calendar library for your reference, the details are as follows

Mainactivity.java Code:

Package siso.weekv;

Import android.content.Intent;
Import android.support.v7.app.AppCompatActivity;
Import Android.os.Bundle;
Import Android.view.View;

public class Mainactivity extends Appcompatactivity {

 @Override
 protected void OnCreate (Bundle Savedinstancestate) {
  super.oncreate (savedinstancestate);
  Setcontentview (r.layout.activity_main);

  Findviewbyid (R.id.buttonbasic). Setonclicklistener (New View.onclicklistener () {
   @Override public
   Void OnClick (View v) {
    Intent Intent = new Intent (mainactivity.this, basicactivity.class);
    StartActivity (intent);
   }
  );

  Findviewbyid (r.id.buttonasynchronous). Setonclicklistener (New View.onclicklistener () {
   @Override
   public void OnClick (View v) {
    Intent Intent = new Intent (mainactivity.this, asynchronousactivity.class);
    StartActivity (intent);}}
  );
 }

Asynchronousactivity.java Code:

Package siso.weekv;


Import Android.widget.Toast;
Import java.util.ArrayList;
Import Java.util.Calendar;

Import java.util.List; Import Retrofit.
Callback; Import Retrofit.
Restadapter; Import Retrofit.
Retrofiterror;
Import Retrofit.client.Response;
Import siso.weekv.apiclient.Event;
Import Siso.weekv.apiclient.MyJsonService;


Import siso.wvlib.WeekViewEvent;
 /** * A example of how events can is fetched from network and is displayed on the Week view.
 * Created by Raquib-ul-alam Kanak on 1/3/2014. * Website:http://alamkanak.github.io/public class Asynchronousactivity extends baseactivity implements Callback<l
 ist<event>> {private List<weekviewevent> events = new arraylist<weekviewevent> ();

 Boolean callednetwork = false; @Override public list<? Extends weekviewevent> onmonthchange (int newyear, int newmonth) {//Download events from Network if it hasn ' t been Done already. To understand how events are//downloaded using retrofit, visitHttp://square.github.io/retrofit if (!callednetwork) {Restadapter retrofit = new Restadapter.builder (). SETENDP
   Oint ("Https://api.myjson.com/bins"). Build ();
   Myjsonservice service = retrofit.create (Myjsonservice.class);
   Service.listevents (this);
  Callednetwork = true;
  //return only to the events that matches NewYear and Newmonth.
  list<weekviewevent> matchedevents = new arraylist<weekviewevent> ();
   for (Weekviewevent event:events) {if (Eventmatches (event, NewYear, Newmonth)) {Matchedevents.add (event);
 } return matchedevents;
  /** * Checks If an event falls into a specific year and month.
  * @param event the event to check for.
  * @param year of the year.
  * @param month the month.
  * @return True If the event matches the year and month. * * Private Boolean eventmatches (Weekviewevent event, int year, int month) {return (Event.getstarttime (). Get (Calendar.y EAR) = = year && event.getstarttime (). Get (Calendar.month) = = Month-1) | |
 (Event.getendtime (). Get (calendar.year) = = year && event.getendtime (). Get (calendar.month) = = month-1);
  @Override public void Success (list<event> events, Response Response) {this.events.clear ();
  for (Event event:events) {This.events.add (event.toweekviewevent ());
 } getweekview (). notifydatasetchanged ();
  @Override public void failure (Retrofiterror error) {error.printstacktrace ();
 Toast.maketext (This, R.string.async_error, Toast.length_short). Show ();

 }
}

Baseactivity.java

Package siso.weekv;
Import Android.graphics.RectF;
Import Android.os.Bundle;
Import android.support.v7.app.AppCompatActivity;
Import Android.util.TypedValue;
Import Android.view.Menu;
Import Android.view.MenuItem;

Import Android.widget.Toast;
Import Java.text.SimpleDateFormat;
Import Java.util.Calendar;

Import Java.util.Locale;
Import Siso.wvlib.DateTimeInterpreter;
Import Siso.wvlib.MonthLoader;
Import Siso.wvlib.WeekView;

Import siso.wvlib.WeekViewEvent; Public abstract class Baseactivity extends Appcompatactivity implements Weekview.eventclicklistener, Monthloader.monthchangelistener, Weekview.eventlongpresslistener, Weekview.emptyviewlongpresslistener {private
 static final int type_day_view = 1;
 private static final int type_three_day_view = 2;
 private static final int type_week_view = 3;
 private int mweekviewtype = Type_three_day_view;


 Private Weekview Mweekview;
  @Override protected void OnCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate); SEtcontentview (r.layout.activity_base);
  Get a reference for the week view in the layout.

  Mweekview = (Weekview) Findviewbyid (R.id.weekview);
  Show a toast message about the touched event.


  Mweekview.setoneventclicklistener (this);

  Mweekview.setmonthchangelistener (this);
  Set Long press listener for events.


  Mweekview.seteventlongpresslistener (this);


  Mweekview.setemptyviewlongpresslistener (this);
 Setupdatetimeinterpreter (FALSE);
  @Override public boolean Oncreateoptionsmenu (Menu menu) {getmenuinflater (). Inflate (R.menu.main, menu);
 return true;
  @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 ();
   return true;
     Case R.id.action_day_view:if (Mweekviewtype!= type_day_view) {item.setchecked (!item.ischecked ());
     Mweekviewtype = Type_day_view; Mweekview.setnUmberofvisibledays (1);
     Lets change some dimensions to best fit the view. Mweekview.setcolumngap ((int) typedvalue.applydimension (Typedvalue.complex_unit_dip, 8, getresources ().
     Getdisplaymetrics ())); Mweekview.settextsize ((int) typedvalue.applydimension (typedvalue.complex_unit_sp, Getresources ().
     Getdisplaymetrics ())); Mweekview.seteventtextsize ((int) typedvalue.applydimension (typedvalue.complex_unit_sp, GetResources ().
    Getdisplaymetrics ()));
   return true;
     Case R.id.action_three_day_view:if (Mweekviewtype!= type_three_day_view) {item.setchecked (!item.isChecked ());
     Mweekviewtype = Type_three_day_view;

     Mweekview.setnumberofvisibledays (3);
     Lets change some dimensions to best fit the view. Mweekview.setcolumngap ((int) typedvalue.applydimension (Typedvalue.complex_unit_dip, 8, getresources ().
     Getdisplaymetrics ())); Mweekview.settextsize ((int) typedvalue.applydimension (typedvalue.complex_unit_sp, Getresources (). Getdisplaymetrics ()); Mweekview.seteventtextsize ((int) typedvalue.applydimension (typedvalue.complex_unit_sp, GetResources ().
    Getdisplaymetrics ()));
   return true;
     Case R.id.action_week_view:if (Mweekviewtype!= type_week_view) {item.setchecked (!item.ischecked ());
     Mweekviewtype = Type_week_view;


     Mweekview.setnumberofvisibledays (7); Mweekview.setcolumngap ((int) typedvalue.applydimension (Typedvalue.complex_unit_dip, 2, getresources ().
     Getdisplaymetrics ())); Mweekview.settextsize ((int) typedvalue.applydimension (typedvalue.complex_unit_sp, Getresources ().
     Getdisplaymetrics ())); Mweekview.seteventtextsize ((int) typedvalue.applydimension (typedvalue.complex_unit_sp, GetResources ().
    Getdisplaymetrics ()));
  return true;
 return super.onoptionsitemselected (item); } private void Setupdatetimeinterpreter (final Boolean shortdate) {mweekview.setdatetimeinterpreter (new Datetimeinter Preter () {@Override publicString interpretdate (Calendar date) {SimpleDateFormat Weekdaynameformat = new SimpleDateFormat ("EEE", Locale.getdefau
    LT ());
    String weekday = Weekdaynameformat.format (Date.gettime ());


    SimpleDateFormat format = new SimpleDateFormat ("M/d", Locale.getdefault ());
    if (shortdate) weekday = string.valueof (Weekday.charat (0));
   return weekday.touppercase () + Format.format (Date.gettime ()); @Override public String interprettime (int hour) {return hour > 11? (hour-12) + "PM": (hour = 0?)
   "AM": Hour + "AM");
 }
  }); } protected String Geteventtitle (Calendar time) {return String.Format ("Event%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)); @Override public void Oneventclick (Weekviewevent event, RECTF eventrect) {Toast.maketext (This, "click" + Event.getna
 Me (), Toast.length_short). Show (); @Override public void Oneventlongpress (WeekviewevEnt event, RECTF eventrect) {Toast.maketext (this, "Long by Event:" + event.getname (), Toast.length_short). Show (); @Override public void Onemptyviewlongpress (the Calendar time) {Toast.maketext (this, empty view long press: + Geteventtitle (time), T Oast.
 Length_short). Show ();
 Public Weekview Getweekview () {return mweekview;

 }
}

Basicactivity.java

Package siso.weekv;
Import java.util.ArrayList;
Import Java.util.Calendar;

Import java.util.List;


Import siso.wvlib.WeekViewEvent; public class Basicactivity extends Baseactivity {@Override public list<? extends Weekviewevent> Onmonthchange (in
  T newyear, int newmonth) {//Populate the Week view with some events.

  list<weekviewevent> events = new arraylist<weekviewevent> ();
  Calendar starttime = Calendar.getinstance ();
  Starttime.set (Calendar.hour_of_day, 3);
  Starttime.set (calendar.minute, 0);
  Starttime.set (Calendar.month, newMonth-1);
  Starttime.set (Calendar.year, newyear);
  Calendar Endtime = (Calendar) starttime.clone ();
  Endtime.add (Calendar.hour, 1);
  Endtime.set (Calendar.month, newMonth-1);
  Weekviewevent event = new Weekviewevent (1, Geteventtitle (starttime), StartTime, Endtime);
  Event.setcolor (Getresources (). GetColor (r.color.event_color_01));

  Events.add (event);
  StartTime = Calendar.getinstance (); Starttime.set (calendar.hour_of_dAY, 3);
  Starttime.set (Calendar.minute, 30);
  Starttime.set (Calendar.month, newMonth-1);
  Starttime.set (Calendar.year, newyear);
  Endtime = (Calendar) starttime.clone ();
  Endtime.set (Calendar.hour_of_day, 4);
  Endtime.set (Calendar.minute, 30);
  Endtime.set (Calendar.month, newMonth-1);
  event = new Weekviewevent (Geteventtitle (starttime), StartTime, Endtime);
  Event.setcolor (Getresources (). GetColor (r.color.event_color_02));

  Events.add (event);
  StartTime = Calendar.getinstance ();
  Starttime.set (Calendar.hour_of_day, 4);
  Starttime.set (Calendar.minute, 20);
  Starttime.set (Calendar.month, newMonth-1);
  Starttime.set (Calendar.year, newyear);
  Endtime = (Calendar) starttime.clone ();
  Endtime.set (Calendar.hour_of_day, 5);
  Endtime.set (calendar.minute, 0);
  event = new Weekviewevent (Geteventtitle (starttime), StartTime, Endtime);
  Event.setcolor (Getresources (). GetColor (r.color.event_color_03));

  Events.add (event);
  StartTime = Calendar.getinstance (); StartTime.Set (Calendar.hour_of_day, 5);
  Starttime.set (Calendar.minute, 30);
  Starttime.set (Calendar.month, newMonth-1);
  Starttime.set (Calendar.year, newyear);
  Endtime = (Calendar) starttime.clone ();
  Endtime.add (Calendar.hour_of_day, 2);
  Endtime.set (Calendar.month, newMonth-1);
  event = new Weekviewevent (2, Geteventtitle (starttime), StartTime, Endtime);
  Event.setcolor (Getresources (). GetColor (r.color.event_color_02));

  Events.add (event);
  StartTime = Calendar.getinstance ();
  Starttime.set (Calendar.hour_of_day, 5);
  Starttime.set (calendar.minute, 0);
  Starttime.set (Calendar.month, newMonth-1);
  Starttime.set (Calendar.year, newyear);
  Starttime.add (calendar.date, 1);
  Endtime = (Calendar) starttime.clone ();
  Endtime.add (Calendar.hour_of_day, 3);
  Endtime.set (Calendar.month, newMonth-1);
  event = new Weekviewevent (3, Geteventtitle (starttime), StartTime, Endtime);
  Event.setcolor (Getresources (). GetColor (r.color.event_color_03));

  Events.add (event); StartTime = Calendar. getinstance ();
  Starttime.set (Calendar.day_of_month, 15);
  Starttime.set (Calendar.hour_of_day, 3);
  Starttime.set (calendar.minute, 0);
  Starttime.set (Calendar.month, newMonth-1);
  Starttime.set (Calendar.year, newyear);
  Endtime = (Calendar) starttime.clone ();
  Endtime.add (Calendar.hour_of_day, 3);
  event = new Weekviewevent (4, Geteventtitle (starttime), StartTime, Endtime);
  Event.setcolor (Getresources (). GetColor (r.color.event_color_04));

  Events.add (event);
  StartTime = Calendar.getinstance ();
  Starttime.set (Calendar.day_of_month, 1);
  Starttime.set (Calendar.hour_of_day, 3);
  Starttime.set (calendar.minute, 0);
  Starttime.set (Calendar.month, newMonth-1);
  Starttime.set (Calendar.year, newyear);
  Endtime = (Calendar) starttime.clone ();
  Endtime.add (Calendar.hour_of_day, 3);
  event = new Weekviewevent (5, Geteventtitle (starttime), StartTime, Endtime);
  Event.setcolor (Getresources (). GetColor (r.color.event_color_01));

  Events.add (event); StartTime = Calendar.getinstaNCE ();
  Starttime.set (Calendar.day_of_month, Starttime.getactualmaximum (Calendar.day_of_month));
  Starttime.set (Calendar.hour_of_day, 15);
  Starttime.set (calendar.minute, 0);
  Starttime.set (Calendar.month, newMonth-1);
  Starttime.set (Calendar.year, newyear);
  Endtime = (Calendar) starttime.clone ();
  Endtime.add (Calendar.hour_of_day, 3);
  event = new Weekviewevent (5, Geteventtitle (starttime), StartTime, Endtime);
  Event.setcolor (Getresources (). GetColor (r.color.event_color_02));

  Events.add (event);
 return events;

 }

}

Apiclient folder under Event.java and Myjsonservice.java

Package siso.weekv.apiclient;
Import Android.annotation.SuppressLint;


Import Android.graphics.Color;
Import Com.google.gson.annotations.Expose;

Import Com.google.gson.annotations.SerializedName;
Import java.text.ParseException;
Import Java.text.SimpleDateFormat;
Import Java.util.Calendar;

Import Java.util.Date;


Import siso.wvlib.WeekViewEvent;
 public class Event {@Expose @SerializedName ("name") private String mname;
 @Expose @SerializedName ("DayOfMonth") private int mdayofmonth;
 @Expose @SerializedName ("StartTime") private String mstarttime;
 @Expose @SerializedName ("Endtime") private String mendtime;

 @Expose @SerializedName ("color") private String Mcolor;
 Public String GetName () {return mname;
 public void SetName (String name) {this.mname = name;
 public int GetDayOfMonth () {return mdayofmonth;
 The public void setdayofmonth (int dayofmonth) {this.mdayofmonth = DayOfMonth;
 Public String GetStartTime () {return mstarttime; } public voidSetstarttime (String starttime) {this.mstarttime = StartTime;
 Public String Getendtime () {return mendtime;
 } public void Setendtime (String endtime) {this.mendtime = Endtime;
 Public String GetColor () {return mcolor;
 public void SetColor (String color) {this.mcolor = color;
  @SuppressLint ("SimpleDateFormat") public weekviewevent toweekviewevent () {//Parse time.
  SimpleDateFormat SDF = new SimpleDateFormat ("hh:mm");
  Date start = new Date ();
  Date end = new Date ();
  try {start = Sdf.parse (GetStartTime ());
  catch (ParseException e) {e.printstacktrace ();
  try {end = Sdf.parse (Getendtime ());
  catch (ParseException e) {e.printstacktrace ();
  }//Initialize start and end time.
  Calendar now = Calendar.getinstance ();
  Calendar starttime = (Calendar) now.clone ();
  Starttime.settimeinmillis (Start.gettime ());
  Starttime.set (Calendar.year, Now.get (calendar.year)); Starttime.set (Calendar.month, Now.get (Calendar.month));
  Starttime.set (Calendar.day_of_month, GetDayOfMonth ());
  Calendar Endtime = (Calendar) starttime.clone ();
  Endtime.settimeinmillis (End.gettime ());
  Endtime.set (Calendar.year, Starttime.get (calendar.year));
  Endtime.set (Calendar.month, Starttime.get (Calendar.month));

  Endtime.set (Calendar.day_of_month, Starttime.get (Calendar.day_of_month));
  Create an week view event.
  Weekviewevent weekviewevent = new Weekviewevent ();
  Weekviewevent.setname (GetName ());
  Weekviewevent.setstarttime (starttime);
  Weekviewevent.setendtime (Endtime);

  Weekviewevent.setcolor (Color.parsecolor (GetColor ()));
 return weekviewevent;

 }
}

Package siso.weekv.apiclient;

Import java.util.List;

Import Retrofit. Callback;
Import Retrofit.http.GET;

/**
 * Created by Raquib-ul-alam Kanak on 1/3/16.
 * Website:http://alamkanak.github.io/Public
interface Myjsonservice {

 //https://api.myjson.com/bins /3nh0k
 @GET ("/3nh0k")
 void Listevents (callback<list<event>> eventscallback);

}

APP Project structure:

Andriod Class Library Project structure:

The results of the project run as shown:

The above is the entire content of this article, I hope to help you learn, but also hope that we support the cloud habitat community.