android DatePickerDialog 彈出日期選擇

注意:

版面要加入一個 textView 及 一個 Button (textView1, ChooseDateBtn)

import android.app.DatePickerDialog;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.TextView;

import java.util.Calendar;

public class MainActivity extends ActionBarActivity {

    Calendar c = Calendar.getInstance();
    TextView DisplayDate;
    int cday, cmonth, cyear;

    @Override     

       protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Button changeDate = (Button) findViewById(R.id.ChooseDateBtn);
        DisplayDate = (TextView) findViewById(R.id.textView1);

        changeDate.setOnClickListener(new OnClickListener() {

            @Override             

             public void onClick(View arg0) {

                new DatePickerDialog(MainActivity.this, d,
                        c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH)).show();

            }
        });
    }

    DatePickerDialog.OnDateSetListener d = new DatePickerDialog.OnDateSetListener() {

        @Override 

            public void onDateSet(DatePicker view, int year, int monthOfYear,
                              int dayOfMonth) {

            cday = dayOfMonth;
            cmonth = monthOfYear + 1;
            cyear = year;

            DisplayDate.setText("Choosen date is :" + cday + "/" + cmonth + "/" + cyear);
        }
    };
}