点击EditText弹出日期对话框

package com.example.popupwindow;

import java.util.Calendar;
import java.util.Date;

import junit.framework.Test;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.DatePickerDialog.OnDateSetListener;
import android.app.Dialog;
import android.app.TimePickerDialog;
import android.os.Bundle;
import android.provider.Settings.System;
import android.support.v7.internal.view.menu.MenuView;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnFocusChangeListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.DatePicker;
import android.widget.EditText;
import android.widget.LinearLayout;

public class Androidtimecontrols extends Activity{
EditText time;
Calendar cd;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.timetestxml);
time = (EditText) findViewById(R.id.timeTestEditText);
    time.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
showDialog(1);
}
});
}
/**
     * 创建日期选择对话框
     */
    @Override
    protected Dialog onCreateDialog(int id) {
        Dialog dialog = null;
        switch (id) {
case 1:
cd = Calendar.getInstance();
            return dialog = new DatePickerDialog(
                this,
                new DatePickerDialog.OnDateSetListener() {
                    public void onDateSet(DatePicker dp, int year,int month, int dayOfMonth) {
                    //格式化日期
                    StringBuffer sb = new StringBuffer();
                    sb.append(String.format("%d-%02d-%02d", year,month+1,dayOfMonth));
                    time.setText(sb);
                    }
                },
                cd.get(Calendar.YEAR), // 传入年份
                cd.get(Calendar.MONTH), // 传入月份
                cd.get(Calendar.DAY_OF_MONTH) // 传入天数
            );
default:
break;
}
return dialog;
      }

}