DatePick

package com.example.datepicktest;

import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.DatePicker;

/*实现 日期选择器的实例，以及点击触发事件，*/
public class MainActivity extends Activity {
private Button mBtn_datepick;
private static final int DATE_PICKER_ID = 1;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mBtn_datepick = (Button) findViewById(R.id.btn_datepick);
mBtn_datepick.setOnClickListener(new BtnListener());

}

private class BtnListener implements OnClickListener{

@Override
public void onClick(View v) {
// TODO Auto-generated method stub
//          此方法执行后会回调oncreateDialog方法，通过输入的ID进行标识，
showDialog(DATE_PICKER_ID);

}

}

//    匿名内部类，onDAtesetListenner是个接口，
DatePickerDialog.OnDateSetListener OnDateSetListener = new DatePickerDialog.OnDateSetListener() {

@Override
public void onDateSet(DatePicker view, int year, int monthOfYear,
int dayOfMonth) {
// TODO Auto-generated method stub
System.out.println(year + "-" + monthOfYear + "-" + dayOfMonth);

}
};

//  重写的oncreateDialog方法
protected android.app.Dialog onCreateDialog(int id) {
switch (id) {
case DATE_PICKER_ID:
return new DatePickerDialog(MainActivity.this, OnDateSetListener, 2015, 11, 25);

default:
break;
}
return null;

};

}

<LinearLayout 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"
android:orientation="vertical">

<Button
android:id="@+id/btn_datepick"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/btn_datepick"/>

</LinearLayout>