【Android学习笔记】DatePickerDialog跟TimePickerDialog日期选择器和时间选择器

（1）布局文件

<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity" >    <Button        android:id="@+id/button2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:layout_centerHorizontal="true"        android:layout_marginTop="156dp"        android:text="时间对话框" />    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/button2"        android:layout_below="@+id/button2"        android:layout_marginTop="14dp"        android:text="日期对话框" />    <EditText        android:id="@+id/editText1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentTop="true"        android:layout_marginTop="41dp"        android:ems="10" >        <requestFocus />    </EditText></RelativeLayout>

package com.example.date_time_dailog;import java.util.Calendar;import android.app.Activity;import android.app.DatePickerDialog;import android.app.DatePickerDialog.OnDateSetListener;import android.app.TimePickerDialog;import android.app.TimePickerDialog.OnTimeSetListener;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.DatePicker;import android.widget.EditText;import android.widget.TimePicker;import android.widget.Toast;public class MainActivity extends Activity {	private Button button1;	private Button button2;	private EditText editText;	private DatePickerDialog datePickerDialog; // 日期对话框	private int year, monthOfYear, dayOfMonth, hourOfDay, minute;	private TimePickerDialog timePickerDialog;// 时间对话框	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.activity_main);		button1 = (Button) this.findViewById(R.id.button1);		button2 = (Button) this.findViewById(R.id.button2);		editText = (EditText) this.findViewById(R.id.editText1);		/*		 * 获取当前的日期及时间		 */		Calendar calendar = Calendar.getInstance();		year = calendar.get(Calendar.YEAR);		monthOfYear = calendar.get(Calendar.MONTH) + 1;		dayOfMonth = calendar.get(Calendar.DAY_OF_MONTH);		hourOfDay = calendar.get(Calendar.HOUR_OF_DAY);		minute = calendar.get(Calendar.MINUTE);		/*		 * 对日期选择器进行设置		 */		datePickerDialog = new DatePickerDialog(this, new OnDateSetListener() {			@Override			public void onDateSet(DatePicker view, int year, int monthOfYear,					int dayOfMonth) {				String text = year + "-" + monthOfYear + "-" + dayOfMonth;				editText.setText(text);			}		}, year, monthOfYear, dayOfMonth);		button1.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				datePickerDialog.show();			}		});		/*		 * 时间选择器的设置		 */		timePickerDialog = new TimePickerDialog(MainActivity.this,				new OnTimeSetListener() {					@Override					public void onTimeSet(TimePicker view, int hourOfDay,							int minute) {						String text = hourOfDay + ":" + minute;						editText.setText(text);					}				}, hourOfDay, minute, true);		button2.setOnClickListener(new OnClickListener() {			@Override			public void onClick(View v) {				timePickerDialog.show();			}		});	}	@Override	public boolean onCreateOptionsMenu(Menu menu) {		getMenuInflater().inflate(R.menu.main, menu);		return true;	}}