Android | Calendar example

Two files 1) DatepickerExample.java


package myapplication.example1.com.hackonlycom;

import android.app.Activity;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.view.View;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;

public  class DatePickerFile extends Activity {

    DatePicker picker;
    Button displayDate;
    TextView textview1;
    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.datepicker);
        textview1=(TextView)findViewById(R.id.textView1);
        picker=(DatePicker)findViewById(R.id.datePicker);
        displayDate=(Button)findViewById(R.id.button1);

        textview1.setText("CurrentDate ="+getCurrentDate());
            displayDate.setOnClickListener(new View.OnClickListener(){
            @Override            public void onClick(View view) {

                textview1.setText("Change Date: "+getCurrentDate());
            }

        });
    }

    public String getCurrentDate(){
        StringBuilder builder=new StringBuilder();;
        builder.append((picker.getMonth() + 1)+"/");//month is 0 based        builder.append(picker.getDayOfMonth()+"/");
        builder.append(picker.getYear());
        return builder.toString();
    }
}


2) datepicker.xml

xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <TextView        android:id="@+id/textView1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_above="@+id/button1"        android:layout_alignParentLeft="true"        android:layout_alignParentStart="true"        android:layout_marginBottom="102dp"        android:layout_marginLeft="30dp"        android:layout_marginStart="30dp"        android:text="" />

    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_centerHorizontal="true"        android:layout_marginBottom="20dp"        android:text="Change Date" />

    <DatePicker        android:id="@+id/datePicker"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_above="@+id/textView1"        android:layout_centerHorizontal="true"        android:layout_marginBottom="36dp" />
</RelativeLayout>
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