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WeekView in Android

Hello Friends,   
Have you Searching for Android calender with WeekView. 
Today I am sharing android tutorial for android custom calendar WeekView.

WeekView.java


 public class WeekView extends ActionBarActivity implements OnItemClickListener, OnClickListener {

 private GridView mGrid;
private GregorianCalendar mCalendar;
private Date[] mWeek;
private TextView mMonthText;
private RelativeLayout mArrowRight;
private RelativeLayout mArrowLeft;
private CalendarAdapter mAdapter;
private SimpleDateFormat mFormatMonth = new SimpleDateFormat("MMMM");
private SimpleDateFormat mFormatDay = new SimpleDateFormat("d");
private SimpleDateFormat mFormatYear = new SimpleDateFormat("yyyy");

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_week_view);

 mGrid=(GridView)findViewById(R.id.gridview);
mGrid.setOnItemClickListener(this);

mMonthText=(TextView)findViewById(R.id.title);
mArrowLeft=(RelativeLayout)findViewById(R.id.previous);
mArrowLeft.setOnClickListener(this);

mArrowRight=(RelativeLayout)findViewById(R.id.next);
mArrowRight.setOnClickListener(this);

mCalendar = (GregorianCalendar)GregorianCalendar.getInstance();
mCalendar.setTime(new Date());
mCalendar.set(GregorianCalendar.DAY_OF_WEEK, GregorianCalendar.SUNDAY);
//mCalendar.add(Calendar.DAY_OF_YEAR, -7);
mCalendar.add(Calendar.DAY_OF_YEAR, 0);

mWeek=new Date[7];
   for(int i=0;i<7;i++)
   {
    mWeek[i]=mCalendar.getTime();
    //mCalendar.set(GregorianCalendar.DAY_OF_WEEK, GregorianCalendar.SUNDAY);
    mCalendar.add(Calendar.DAY_OF_YEAR, 1);
   }
   setSelectedMonthText();

    mAdapter=new CalendarAdapter(this, mWeek);
   
   mGrid.setAdapter(mAdapter);
}

 @Override
public boolean onCreateOptionsMenu(Menu menu) {

 // Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.week_view, menu);
return true;
}

 @Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
private void setSelectedMonthText() {
String monthText;
if(Integer.parseInt(mFormatDay.format(mWeek[0]))>Integer.parseInt(mFormatDay.format(mWeek[6])))
monthText=mFormatMonth.format(mWeek[0])+" / "+mFormatMonth.format(mWeek[6]);
else
monthText=mFormatMonth.format(mWeek[0]);

mMonthText.setText(monthText+" "+mFormatYear.format(mWeek[6]));
}

 private void addWeek()
{
for(int i=0;i<7;i++)
{
mWeek[i]=mCalendar.getTime();
    mCalendar.add(Calendar.DAY_OF_YEAR, 1);
}

 mAdapter.notifyDataSetChanged();

setSelectedMonthText(); 
//clearBackground();
}


private void subWeek()
{
mCalendar.add(Calendar.DAY_OF_YEAR, -14);
for(int i=0;i<7;i++)
{
    mWeek[i]=mCalendar.getTime();
    mCalendar.add(Calendar.DAY_OF_YEAR, 1);
}
setSelectedMonthText();
mAdapter.notifyDataSetChanged();

 //clearBackground();
}
@Override
public void onClick(View v) {
switch(v.getId())
{
case R.id.previous:
subWeek();
break;
case R.id.next:
addWeek();
break;
}
}

 @Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO Auto-generated method stub

}

}


activity_week_view.xml:


<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/background"
    android:orientation="vertical" >

    <RelativeLayout
        android:id="@+id/header"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/calendar_top" >

        <RelativeLayout
            android:id="@+id/previous"
            android:layout_width="40dip"
            android:layout_height="30dip"
            android:layout_alignParentLeft="true" >

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                android:background="@drawable/arrow_left" />
        </RelativeLayout>

        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="5dip"
            android:textColor="#000000"
            android:textSize="18dip"
            android:textStyle="bold" />

        <RelativeLayout
            android:id="@+id/next"
            android:layout_width="40dip"
            android:layout_height="30dip"
            android:layout_alignParentRight="true" >

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerInParent="true"
                android:background="@drawable/arrow_right" />
        </RelativeLayout>
    </RelativeLayout>

    <GridView
        android:id="@+id/gridview"
        android:layout_below="@+id/header"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:listSelector="@android:color/transparent"
        android:numColumns="7"
        android:stretchMode="columnWidth" />
    
    <LinearLayout 
        android:id="@+id/text"
        android:layout_below="@+id/gridview"
        android:layout_width="match_parent"
        android:layout_marginLeft="5dp"
        android:layout_marginRight="5dp"
        android:layout_height="wrap_content"
        android:orientation="vertical">
       
    </LinearLayout>

</RelativeLayout>


CalendarAdapter.java


public class CalendarAdapter extends BaseAdapter{
private Context mContext;
    private Date[]   mWeek;
    private SimpleDateFormat mFormatNumber;
    private View previousView;
public CalendarAdapter(Context _context, Date[] _week) {
Locale.setDefault(Locale.US);
mContext = _context;
       mWeek = _week;
       mFormatNumber = new SimpleDateFormat("d");
}
private static class ViewHolder {
        public TextView tvNumber;
    }

@Override
public int getCount() {
return mWeek.length;
}

@Override
public Object getItem(int position) {
return null;
}

@Override
public long getItemId(int position) {
return 0;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
        if (convertView == null) {
        LayoutInflater vi = (LayoutInflater)this.mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        convertView = vi.inflate(R.layout.calendar_item, null);
        holder = new ViewHolder();
        holder.tvNumber = (TextView)  convertView.findViewById(R.id.tv_number);
        convertView.setTag(holder);
        } else {
        holder = (ViewHolder) convertView.getTag();
        }
        
        holder.tvNumber.setText(mFormatNumber.format(mWeek[position]));
        return convertView;
}

public View setSelected(View view) {
if (previousView != null) {
previousView.setBackgroundResource(R.drawable.list_item_background);
}
previousView = view;
view.setBackgroundResource(R.drawable.calendar_cel_selectl);
return view;
}

}


calendar_item.xml:


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:background="@drawable/calendar_cell"
    android:gravity="center"
    android:orientation="vertical"
    android:padding="2dip" >

    <TextView
        android:gravity="center"
   android:id="@+id/tv_number"
   android:background="@null"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="#0000D7"
        android:textSize="14sp"
        android:textStyle="bold" >
    </TextView>
</LinearLayout>


Screenshot:




here is the Sample Code





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