How to use calendar in android

In this apps we use four class to run calendarview.

first class name as CalendarActivity,Cell,TestActivity,calendarView.Before that we download a images like background.png,calendar_week.png,typeb_calendar_today.png. insert into Drawable folder,because to show and set a day in calendar format .

 

package com.exina.android.calendar;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.os.Handler;

import android.text.format.DateUtils;

import android.view.View;

import android.widget.TextView;

import android.widget.Toast;

public class CalendarActivity extends Activity  implements CalendarView.OnCellTouchListener{

public static final String MIME_TYPE = "vnd.android.cursor.dir/vnd.exina.android.calendar.date";

CalendarView mView = null;

TextView mHit;

Handler mHandler = new Handler();

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        mView = (CalendarView)findViewById(R.id.calendar);

        mView.setOnCellTouchListener(this);

        

        if(getIntent().getAction().equals(Intent.ACTION_PICK))

        findViewById(R.id.hit).setVisibility(View.INVISIBLE);

    }

public void onTouch(Cell cell) {

Intent intent = getIntent();

String action = intent.getAction();

if(action.equals(Intent.ACTION_PICK) || action.equals(Intent.ACTION_GET_CONTENT)) {

Intent ret = new Intent();

ret.putExtra("year", mView.getYear());

ret.putExtra("month", mView.getMonth());

ret.putExtra("day", cell.getDayOfMonth());

this.setResult(RESULT_OK, ret);

finish();

return;

}

int day = cell.getDayOfMonth();

if(mView.firstDay(day))

mView.previousMonth();

else if(mView.lastDay(day))

mView.nextMonth();

else

return;

mHandler.post(new Runnable() {

public void run() {

Toast.makeText(CalendarActivity.this, DateUtils.getMonthString(mView.getMonth(), DateUtils.LENGTH_LONG) + " "+mView.getYear(), Toast.LENGTH_SHORT).show();

}

});

}

    

}

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Paint;

import android.graphics.Rect;

import android.graphics.RectF;

import android.graphics.drawable.Drawable;

import android.util.Log;

public class Cell {

private static final String TAG = "Cell";

protected Rect mBound = null;

protected int mDayOfMonth = 1; // from 1 to 31

protected Paint mPaint = new Paint(Paint.SUBPIXEL_TEXT_FLAG

            |Paint.ANTI_ALIAS_FLAG);

int dx, dy;

public Cell(int dayOfMon, Rect rect, float textSize, boolean bold) {

mDayOfMonth = dayOfMon;

mBound = rect;

mPaint.setTextSize(textSize/*26f*/);

mPaint.setColor(Color.BLACK);

if(bold) mPaint.setFakeBoldText(true);

dx = (int) mPaint.measureText(String.valueOf(mDayOfMonth)) / 2;

dy = (int) (-mPaint.ascent() + mPaint.descent()) / 2;

}

public Cell(int dayOfMon, Rect rect, float textSize) {

this(dayOfMon, rect, textSize, false);

}

protected void draw(Canvas canvas) {

canvas.drawText(String.valueOf(mDayOfMonth), mBound.centerX() - dx, mBound.centerY() + dy, mPaint);

}

public int getDayOfMonth() {

return mDayOfMonth;

}

public boolean hitTest(int x, int y) {

return mBound.contains(x, y); 

}

public Rect getBound() {

return mBound;

}

public String toString() {

return String.valueOf(mDayOfMonth)+"("+mBound.toString()+")";

}

}

import java.text.SimpleDateFormat;

import java.util.Calendar;

import android.app.AlertDialog;

import android.content.Intent;

import android.os.Bundle;

import android.preference.Preference;

import android.preference.PreferenceActivity;

import android.widget.Toast;

public class TestActivity extends PreferenceActivity implements Preference.OnPreferenceClickListener{

@Override

public void onCreate(Bundle savedInstance) {

super.onCreate(savedInstance);

addPreferencesFromResource(R.xml.test);

findPreference("show").setIntent(new Intent(Intent.ACTION_VIEW).setDataAndType(null, CalendarActivity.MIME_TYPE));

findPreference("pick").setOnPreferenceClickListener(this);

findPreference("about").setOnPreferenceClickListener(this);

}

@Override

public void onActivityResult(int requestCode, int resultCode, Intent data) {

if(resultCode==RESULT_OK) {

int year = data.getIntExtra("year", 0);

int month = data.getIntExtra("month", 0);

int day = data.getIntExtra("day", 0);

final Calendar dat = Calendar.getInstance();

dat.set(Calendar.YEAR, year);

dat.set(Calendar.MONTH, month);

dat.set(Calendar.DAY_OF_MONTH, day);

SimpleDateFormat format = new SimpleDateFormat("yyyy MMM dd");

Toast.makeText(TestActivity.this, format.format(dat.getTime()), Toast.LENGTH_LONG).show();

}

}

public boolean onPreferenceClick(Preference  preference) {

String key = preference.getKey();

if(key.equals("pick")) {

startActivityForResult(new Intent(Intent.ACTION_PICK).setDataAndType(null, CalendarActivity.MIME_TYPE), 100);

} else if(key.equals("about")) {

new AlertDialog.Builder(this).setIcon(android.R.drawable.ic_dialog_alert).setTitle(R.string.app_name).setMessage("http://saga-androidapplication.webgarden.com/\n\nBy Saga<arun.saga@yahoo.in>").create().show();

}

return true;

}

}

import java.util.Calendar;

import android.content.Context;

import android.content.res.Resources;

import android.graphics.Canvas;

import android.graphics.Color;

import android.graphics.Rect;

import android.graphics.drawable.Drawable;

import android.util.AttributeSet;

import android.util.MonthDisplayHelper;

import android.view.MotionEvent;

import android.widget.ImageView;

public class CalendarView extends ImageView {

    private static int WEEK_TOP_MARGIN = 74;

    private static int WEEK_LEFT_MARGIN = 40;

    private static int CELL_WIDTH = 58;

    private static int CELL_HEIGH = 53;

    private static int CELL_MARGIN_TOP = 92;

    private static int CELL_MARGIN_LEFT = 39;

    private static float CELL_TEXT_SIZE;

    

private static final String TAG = "CalendarView"; 

private Calendar mRightNow = null;

    private Drawable mWeekTitle = null;

    private Cell mToday = null;

    private Cell[][] mCells = new Cell[6][7];

    private OnCellTouchListener mOnCellTouchListener = null;

    MonthDisplayHelper mHelper;

    Drawable mDecoration = null;

    

public interface OnCellTouchListener {

    public void onTouch(Cell cell);

    }

public CalendarView(Context context) {

this(context, null);

}

public CalendarView(Context context, AttributeSet attrs) {

this(context, attrs, 0);

}

public CalendarView(Context context, AttributeSet attrs, int defStyle) {

super(context, attrs, defStyle);

mDecoration = context.getResources().getDrawable(R.drawable.typeb_calendar_today);

initCalendarView();

}

private void initCalendarView() {

mRightNow = Calendar.getInstance();

// prepare static vars

Resources res = getResources();

WEEK_TOP_MARGIN  = (int) res.getDimension(R.dimen.week_top_margin);

WEEK_LEFT_MARGIN = (int) res.getDimension(R.dimen.week_left_margin);

CELL_WIDTH = (int) res.getDimension(R.dimen.cell_width);

CELL_HEIGH = (int) res.getDimension(R.dimen.cell_heigh);

CELL_MARGIN_TOP = (int) res.getDimension(R.dimen.cell_margin_top);

CELL_MARGIN_LEFT = (int) res.getDimension(R.dimen.cell_margin_left);

CELL_TEXT_SIZE = res.getDimension(R.dimen.cell_text_size);

// set background

setImageResource(R.drawable.background);

mWeekTitle = res.getDrawable(R.drawable.calendar_week);

mWeekTitle.setBounds(WEEK_LEFT_MARGIN, WEEK_TOP_MARGIN, WEEK_LEFT_MARGIN+mWeekTitle.getMinimumWidth(), WEEK_TOP_MARGIN+mWeekTitle.getMinimumHeight());

mHelper = new MonthDisplayHelper(mRightNow.get(Calendar.YEAR), mRightNow.get(Calendar.MONTH));

initCells();

    }

private void initCells() {

   class _calendar {

    public int day;

    public boolean thisMonth;

    public _calendar(int d, boolean b) {

    day = d;

    thisMonth = b;

    }

    public _calendar(int d) {

    this(d, false);

    }

   };

   _calendar tmp[][] = new _calendar[6][7];

   

   for(int i=0; i<tmp.length; i++) {

    int n[] = mHelper.getDigitsForRow(i);

    for(int d=0; d<n.length; d++) {

    if(mHelper.isWithinCurrentMonth(i,d))

    tmp[i][d] = new _calendar(n[d], true);

    else

    tmp[i][d] = new _calendar(n[d]);

   

    }

   }

   Calendar today = Calendar.getInstance();

   int thisDay = 0;

   mToday = null;

   if(mHelper.getYear()==today.get(Calendar.YEAR) && mHelper.getMonth()==today.get(Calendar.MONTH)) {

    thisDay = today.get(Calendar.DAY_OF_MONTH);

   }

// build cells

Rect Bound = new Rect(CELL_MARGIN_LEFT, CELL_MARGIN_TOP, CELL_WIDTH+CELL_MARGIN_LEFT, CELL_HEIGH+CELL_MARGIN_TOP);

for(int week=0; week<mCells.length; week++) {

for(int day=0; day<mCells[week].length; day++) {

if(tmp[week][day].thisMonth) {

if(day==0 || day==6 )

mCells[week][day] = new RedCell(tmp[week][day].day, new Rect(Bound), CELL_TEXT_SIZE);

else 

mCells[week][day] = new Cell(tmp[week][day].day, new Rect(Bound), CELL_TEXT_SIZE);

} else

mCells[week][day] = new GrayCell(tmp[week][day].day, new Rect(Bound), CELL_TEXT_SIZE);

Bound.offset(CELL_WIDTH, 0); // move to next column 

// get today

if(tmp[week][day].day==thisDay) {

mToday = mCells[week][day];

mDecoration.setBounds(mToday.getBound());

}

}

Bound.offset(0, CELL_HEIGH); // move to next row and first column

Bound.left = CELL_MARGIN_LEFT;

Bound.right = CELL_MARGIN_LEFT+CELL_WIDTH;

}

}

    public void setTimeInMillis(long milliseconds) {

    mRightNow.setTimeInMillis(milliseconds);

    initCells();

    this.invalidate();

    }

        

    public int getYear() {

    return mHelper.getYear();

    }

    

    public int getMonth() {

    return mHelper.getMonth();

    }

    

    public void nextMonth() {

    mHelper.nextMonth();

    initCells();

    invalidate();

    }

    

    public void previousMonth() {

    mHelper.previousMonth();

    initCells();

    invalidate();

    }

    

    public boolean firstDay(int day) {

    return day==1;

    }

    

    public boolean lastDay(int day) {

    return mHelper.getNumberOfDaysInMonth()==day;

    }

    

    public void goToday() {

    Calendar cal = Calendar.getInstance();

    mHelper = new MonthDisplayHelper(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH));

    initCells();

    invalidate();

    }

    

    public Calendar getDate() {

    return mRightNow;

    }

    

    @Override

    public boolean onTouchEvent(MotionEvent event) {

    if(mOnCellTouchListener!=null){

    for(Cell[] week : mCells) {

for(Cell day : week) {

if(day.hitTest((int)event.getX(), (int)event.getY())) {

mOnCellTouchListener.onTouch(day);

}

}

}

    }

    return super.onTouchEvent(event);

    }

  

    public void setOnCellTouchListener(OnCellTouchListener p) {

mOnCellTouchListener = p;

}

@Override

protected void onDraw(Canvas canvas) {

// draw background

super.onDraw(canvas);

mWeekTitle.draw(canvas);

// draw cells

for(Cell[] week : mCells) {

for(Cell day : week) {

day.draw(canvas);

}

}

// draw today

if(mDecoration!=null && mToday!=null) {

mDecoration.draw(canvas);

}

}

private class GrayCell extends Cell {

public GrayCell(int dayOfMon, Rect rect, float s) {

super(dayOfMon, rect, s);

mPaint.setColor(Color.LTGRAY);

}

}

private class RedCell extends Cell {

public RedCell(int dayOfMon, Rect rect, float s) {

super(dayOfMon, rect, s);

mPaint.setColor(0xdddd0000);

}

}

}

xml file name as main.xml.

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    >

<com.exina.android.calendar.CalendarView  android:id="@+id/calendar"

   android:layout_width="fill_parent" 

   android:layout_height="wrap_content" />

    <TextView android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:text="@string/app_name" />

    <TextView android:id="@+id/hit"

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:text="@string/hit" />

   

</LinearLayout>

Go to AndroidManifest.xml .

package="com.exina.android.calendar"

      android:versionCode="1"

      android:versionName="1.0">

    <application android:icon="@drawable/icon" android:label="@string/app_name">

        <activity android:name=".CalendarActivity"

                  android:label="@string/app_name">

            

            <intent-filter>

                <action android:name="android.intent.action.PICK" />

                <category android:name="android.intent.category.DEFAULT" />

                <data android:mimeType="vnd.android.cursor.dir/vnd.exina.android.calendar.date" />

            </intent-filter>

            <intent-filter>

                <action android:name="android.intent.action.VIEW" />

                <category android:name="android.intent.category.DEFAULT" />

                <data android:mimeType="vnd.android.cursor.dir/vnd.exina.android.calendar.date" />

            </intent-filter>

        </activity>

    <activity android:label="@string/app_name"

     android:name=".TestActivity" android:icon="@drawable/icon">

    <intent-filter>

    <action android:name="android.intent.action.MAIN"/>

<category android:name="android.intent.category.LAUNCHER"/>

</intent-filter>

</activity>

</application>

Output: