Age Calculator

Make your age calculator

	<?xml version="1.0" encoding="utf-8"?>
	<LinearLayout
	xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="match_parent"
	android:layout_height="match_parent"
	android:background="#FFFFFF"
	android:orientation="vertical">
	<TextView
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:gravity="center"
	android:padding="7dp"
	android:text="@string/app_name"
	android:textColor="#FFFFFF"
	android:textSize="22sp"/>
	<ScrollView
	android:layout_width="match_parent"
	android:layout_height="0dp"
	android:layout_weight="1"
	android:background="#FFFFFF">
	<LinearLayout
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:orientation="vertical">
	<LinearLayout
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_margin="5dp"
	android:orientation="vertical">
	<TextView
	android:layout_width="match_parent"
	android:layout_height="0dp"
	android:layout_weight="1"
	android:padding="10dp"
	android:text="@string/from"
	android:textColor="#000000"
	android:textSize="17sp"/>
	<View
	android:layout_width="match_parent"
	android:layout_height="2dp"
	android:background="#777777"/>
	<TextView
	android:id="@+id/tv_fromDate"
	android:layout_width="match_parent"
	android:layout_height="0dp"
	android:layout_weight="1"
	android:padding="10dp"
	android:text="@string/select_from"
	android:textColor="#666666"
	android:textSize="17sp"/>
	</LinearLayout>
	<LinearLayout
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_margin="5dp"
	android:orientation="vertical">
	<TextView
	android:layout_width="match_parent"
	android:layout_height="0dp"
	android:layout_weight="1"
	android:padding="10dp"
	android:text="@string/to"
	android:textColor="#000000"
	android:textSize="17sp"/>
	<View
	android:layout_width="match_parent"
	android:layout_height="2dp"
	android:background="#777777"/>
	<TextView
	android:id="@+id/tv_toDate"
	android:layout_width="match_parent"
	android:layout_height="0dp"
	android:layout_weight="1"
	android:padding="10dp"
	android:text="@string/select_to"
	android:textColor="#666666"
	android:textSize="17sp"/>
	</LinearLayout>
	<LinearLayout
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_margin="5dp"
	android:orientation="vertical">
	<TextView
	android:layout_width="match_parent"
	android:layout_height="0dp"
	android:layout_weight="1"
	android:padding="10dp"
	android:text="@string/age"
	android:textColor="#000000"
	android:textSize="17sp"/>
	<View
	android:layout_width="match_parent"
	android:layout_height="2dp"
	android:background="#777777"/>
	<TextView
	android:id="@+id/tv_age"
	android:layout_width="match_parent"
	android:layout_height="0dp"
	android:layout_weight="1"
	android:padding="10dp"
	android:text="@string/your_age"
	android:textColor="#666666"
	android:textSize="17sp"/>
	</LinearLayout>
	<LinearLayout
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_margin="5dp"
	android:orientation="vertical">
	<TextView
	android:layout_width="match_parent"
	android:layout_height="0dp"
	android:layout_weight="1"
	android:padding="10dp"
	android:text="@string/next_birthday"
	android:textColor="#000000"
	android:textSize="17sp"/>
	<View
	android:layout_width="match_parent"
	android:layout_height="2dp"
	android:background="#777777"/>
	<TextView
	android:id="@+id/tv_next_bday"
	android:layout_width="match_parent"
	android:layout_height="0dp"
	android:layout_weight="1"
	android:padding="10dp"
	android:text="@string/your_next_bday"
	android:textColor="#666666"
	android:textSize="17sp"/>
	</LinearLayout>
	</LinearLayout>
	</ScrollView>
	<Button
	android:id="@+id/btn_calc"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:layout_gravity="center"
	android:layout_margin="10dp"
	android:padding="10dp"
	android:text="@string/calculate"
	android:textColor="#FFFFFF"
	android:textSize="17sp"/>
	</LinearLayout>

view raw claculator.xml hosted with ❤ by GitHub

	import android.app.Activity;
	import android.app.DatePickerDialog;
	import android.app.Dialog;
	import android.os.Bundle;
	import android.util.Log;
	import android.view.View;
	import android.widget.Button;
	import android.widget.DatePicker;
	import android.widget.TextView;
	import android.widget.Toast;
	import java.text.SimpleDateFormat;
	import java.util.Calendar;
	import java.util.Date;
	@SuppressWarnings("deprecation")
	public class Calc extends Activity implements android.view.View.OnClickListener {
	private TextView tv_fromDate = null, tv_toDate = null, tv_age = null, tv_next_bday = null;
	private Button btn_calc = null;
	private int[] monthDay = {31, -1, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
	private int year, month, day;
	private int age = 0, myMonth, myDay, next_month, next_day;
	private String formatedDate;
	private Date fromDate, toDate;
	private SimpleDateFormat sdf;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.claculator);
	tv_fromDate = (TextView) findViewById(R.id.tv_fromDate);
	tv_toDate = (TextView) findViewById(R.id.tv_toDate);
	tv_age = (TextView) findViewById(R.id.tv_age);
	tv_next_bday = (TextView) findViewById(R.id.tv_next_bday);
	btn_calc = (Button) findViewById(R.id.btn_calc);
	tv_fromDate.setOnClickListener(this);
	tv_toDate.setOnClickListener(this);
	btn_calc.setOnClickListener(this);
	final Calendar c = Calendar.getInstance();
	year = c.get(Calendar.YEAR);
	month = c.get(Calendar.MONTH);
	day = c.get(Calendar.DATE);
	c.set(year, month, day);
	Date date = c.getTime();
	sdf = new SimpleDateFormat("dd-MMM-yyyy");
	formatedDate = sdf.format(date);
	toDate = date;
	tv_toDate.setText(formatedDate);
	}
	@Override
	public void onClick(View v) {
	switch (v.getId()) {
	case R.id.tv_fromDate:
	showDialog(R.id.tv_fromDate);
	break;
	case R.id.tv_toDate:
	showDialog(R.id.tv_toDate);
	break;
	case R.id.btn_calc:
	if (fromDate == null) {
	Toast.makeText(Calc.this, "Please Select From Date", Toast.LENGTH_SHORT).show();
	showDialog(R.id.tv_fromDate);
	} else if (toDate == null) {
	Toast.makeText(Calc.this, "Please Select To Date", Toast.LENGTH_SHORT).show();
	showDialog(R.id.tv_toDate);
	} else {
	getAge(fromDate, toDate);
	}
	break;
	}
	}
	@Override
	protected Dialog onCreateDialog(int id) {
	switch (id) {
	case R.id.tv_fromDate:
	return new DatePickerDialog(this, FromDatePicker, year, month, day);
	case R.id.tv_toDate:
	return new DatePickerDialog(this, ToDatePicker, year, month, day);
	}
	return null;
	}
	private DatePickerDialog.OnDateSetListener FromDatePicker = new DatePickerDialog.OnDateSetListener() {
	// when dialog box is closed, below method will be called.
	public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) {
	year = selectedYear;
	month = selectedMonth;
	day = selectedDay;
	fromDate = new Date(year - 1900, month, day);
	formatedDate = sdf.format(fromDate);
	tv_fromDate.setText(formatedDate);
	}
	};
	private DatePickerDialog.OnDateSetListener ToDatePicker = new DatePickerDialog.OnDateSetListener() {
	// when dialog box is closed, below method will be called.
	public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDay) {
	year = selectedYear;
	month = selectedMonth;
	day = selectedDay;
	toDate = new Date(year - 1900, month, day);
	formatedDate = sdf.format(toDate);
	tv_toDate.setText(formatedDate);
	}
	};
	public void getAge(Date dtFromDate, Date dtToDate) {
	Calendar cToDate = Calendar.getInstance();
	Calendar cFromDate = Calendar.getInstance();
	cFromDate.setTime(dtFromDate);
	cToDate.setTime(dtToDate);
	if (cFromDate.after(cToDate) || cFromDate.equals(cToDate)) {
	Toast.makeText(Calc.this, "To date must greter than From Date", Toast.LENGTH_LONG).show();
	} else {
	age = cToDate.get(Calendar.YEAR) - cFromDate.get(Calendar.YEAR);
	myMonth = cToDate.get(Calendar.MONTH) - cFromDate.get(Calendar.MONTH);
	myDay = cToDate.get(Calendar.DATE) - cFromDate.get(Calendar.DATE);
	int increment = 0;
	if (cToDate.get(Calendar.DATE) < cFromDate.get(Calendar.DATE)) {
	increment = this.monthDay[cFromDate.get(Calendar.MONTH) - 1];
	}
	if (increment == -1) {
	if ((cFromDate.get(Calendar.YEAR) / 4) == 0) {
	increment = 29;
	} else {
	increment = 28;
	}
	}
	if (increment != 0) {
	myDay = (cToDate.get(Calendar.DATE) + increment) - cFromDate.get(Calendar.DATE);
	next_day = increment - myDay;
	Log.d("increment != 0 ", myDay + " " + increment + " " + next_day);
	increment = 1;
	} else {
	myDay = cToDate.get(Calendar.DATE) - cFromDate.get(Calendar.DATE);
	next_day = 31 - myDay;
	Log.d("increment ", myDay + " " + increment + " " + next_day);
	}
	if (cToDate.get(Calendar.MONTH) < (cFromDate.get(Calendar.MONTH) + increment)) {
	myMonth = ((12 + cToDate.get(Calendar.MONTH)) - (cFromDate.get(Calendar.MONTH) + increment));
	next_month = 11 - myMonth;
	increment = 1;
	} else {
	myMonth = (cToDate.get(Calendar.MONTH) - (cFromDate.get(Calendar.MONTH) + increment));
	next_month = 11 - myMonth;
	increment = 0;
	}
	// If birth date is greater than todays date (after 2 days adjustment of leap year) then decrement age one year
	if ((cFromDate.get(Calendar.DAY_OF_YEAR) - cToDate.get(Calendar.DAY_OF_YEAR) > 3) || (cFromDate.get(Calendar.MONTH) > cToDate.get(Calendar.MONTH))) {
	age--;
	// If birth date and todays date are of same month and birth day of month is greater than todays day of month then decrement age
	} else if ((cFromDate.get(Calendar.MONTH) == cToDate.get(Calendar.MONTH)) && (cFromDate.get(Calendar.DAY_OF_MONTH) > cToDate.get(Calendar.DAY_OF_MONTH))) {
	age--;
	}
	setText();
	}
	}
	private void setText() {
	if (age == 1 && myMonth == 1 && myDay == 1) {
	tv_age.setText(age-- + "-Year " + myMonth-- + "-Month " + myDay + "-Day");
	} else if (age == 1 && myMonth == 1 && myDay != 1) {
	tv_age.setText(age-- + "-Year " + myMonth-- + "-Month " + myDay + "-Days");
	} else if (age == 1 && myMonth != 1 && myDay == 1) {
	tv_age.setText(age-- + "-Year " + myMonth-- + "-Months " + myDay + "-Day");
	} else if (age != 1 && myMonth == 1 && myDay == 1) {
	tv_age.setText(age-- + "-Years " + myMonth-- + "-Month " + myDay + "-Day");
	} else if (age != 1 && myMonth != 1 && myDay == 1) {
	tv_age.setText(age-- + "-Years " + myMonth-- + "-Months " + myDay + "-Day");
	} else if (age != 1 && myMonth == 1 && myDay != 1) {
	tv_age.setText(age-- + "-Years " + myMonth-- + "-Month " + myDay + "-Days");
	} else if (age == 1 && myMonth != 1 && myDay != 1) {
	tv_age.setText(age-- + "-Year " + myMonth-- + "-Months " + myDay + "-Days");
	} else {
	tv_age.setText(age-- + "-Years " + myMonth-- + "-Months " + myDay + "-Days");
	}
	if (next_month == 1 && next_day == 1) {
	tv_next_bday.setText(next_month + "-Month " + next_day + "-Day");
	} else if (next_month != 1 && next_day == 1) {
	tv_next_bday.setText(next_month + "-Months " + next_day + "-Day");
	} else if (next_month == 1 && next_day != 1) {
	tv_next_bday.setText(next_month + "-Month " + next_day + "-Days");
	} else {
	tv_next_bday.setText(next_month + "-Months " + next_day + "-Days");
	}
	}
	}

view raw gistfile1.txt hosted with ❤ by GitHub

	<?xml version="1.0" encoding="utf-8"?>
	<resources>
	<string name="app_name">Age Calculator</string>
	<string name="action_settings">Settings</string>
	<string name="from">From/Birth Date</string>
	<string name="select_from">Tap to select- From/Birth Date</string>
	<string name="to">To/Current Date</string>
	<string name="select_to">Tap to select- To/Current Date</string>
	<string name="age">Your Age</string>
	<string name="your_age">Your Age is</string>
	<string name="next_birthday">Next Birthday</string>
	<string name="your_next_bday">Your Next Birthday In</string>
	<string name="calculate">Calculate</string>
	</resources>

view raw string.xml hosted with ❤ by GitHub