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Android : DatePicker

Tutorial by:      Date: 2018-01-23 04:27:19

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Android DatePicker is a gadget to choose date. It enables you to choose date by day, month and year. Like DatePicker, android additionally gives TimePicker to choose time. 

The android.widget.DatePicker is the subclass of FrameLayout class.

Android DatePicker Example

Let's see the simple example of datepicker widget in android.

activity_main.xml

File: activity_main.xml


<RelativeLayout xmlns:androclass="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_alignParentLeft="true"  
        android:layout_alignParentTop="true"  
        android:layout_marginLeft="50dp"  
        android:layout_marginTop="36dp"  
        android:text="Current Date:" />  

    <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="140dp"  

        android:text="Change Date" />  

    <DatePicker  
        android:id="@+id/datePicker1"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_above="@+id/button1"  
        android:layout_centerHorizontal="true"  
        android:layout_marginBottom="30dp" />  
RelativeLayout>  

Activity class

File: MainActivity.java


package com.example.datepicker2;  
import android.os.Bundle;  
import android.app.Activity;  
import android.view.Menu;  
import android.view.View;  
import android.view.View.OnClickListener;  
import android.widget.Button;  
import android.widget.DatePicker;  
import android.widget.TextView;  
import android.widget.Toast;  

public class MainActivity extends Activity {  
    DatePicker picker;  
    Button displayDate;  
    TextView textview1;  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
        textview1=(TextView)findViewById(R.id.textView1);  
        picker=(DatePicker)findViewById(R.id.datePicker1);  
        displayDate=(Button)findViewById(R.id.button1);  
        textview1.setText(getCurrentDate());  

        displayDate.setOnClickListener(new OnClickListener(){  
            @Override  
            public void onClick(View view) {  
                textview1.setText(getCurrentDate());  
            }  
        });  
    }  
    public String getCurrentDate(){  
        StringBuilder builder=new StringBuilder();  
        builder.append("Current Date: ");  
        builder.append((picker.getMonth() + 1)+"/");//month is 0 based  
        builder.append(picker.getDayOfMonth()+"/");  
        builder.append(picker.getYear());  
        return builder.toString();  
    }  
    @Override  
    public boolean onCreateOptionsMenu(Menu menu) {  
        // Inflate the menu; this adds items to the action bar if it is present.  
        getMenuInflater().inflate(R.menu.activity_main, menu);  
        return true;  
    }  

}

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