TimePickerDialog in Android

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <Button
        android:id="@+id/chooseTimeButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Choose Time"
        android:textSize="20dp" />

    <TextView
        android:id="@+id/displayTimeText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge" />

</LinearLayout>

MainActivity.java

package in.blogspot.kantapp.timepickerdialoginandroid;

import android.app.Activity;
import android.app.TimePickerDialog;
import android.app.TimePickerDialog.OnTimeSetListener;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.widget.TimePicker;

import java.util.Calendar;

public class MainActivity extends Activity {
    Calendar c = Calendar.getInstance();
    TextView display;

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

        Button changeTimeBtn = (Button) findViewById(R.id.chooseTimeButton);
        display = (TextView) findViewById(R.id.displayTimeText);

        changeTimeBtn.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                new TimePickerDialog(MainActivity.this, t, c
                        .get(Calendar.HOUR_OF_DAY), c.get(Calendar.MINUTE),
                        true).show();
            }
        });
    }

    TimePickerDialog.OnTimeSetListener t = new OnTimeSetListener() {

        @Override
        public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
            // TODO Auto-generated method stub
            display.setText("Choosen time is :" + hourOfDay + ":" + minute);
        }
    };

}