Android开发 自定义日期选择对话框（扩展功能）

Android提供了DatePickerDialog和TimePickerDialog控件用于弹出日期和时间选择对话框，单是它们都是独立的，不能方便的设置：”yyy-MM-dd HH:mm:ss“型日期时间，所以我们需要自己定义DatePickerDialog组件来设置。

首先需要写布局界面：该界面的XML代码如下：

布局名称为：datetime.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <DatePicker          android:id="@+id/datepicker"  android:layout_width="fill_parent"  android:layout_height="wrap_content" /> <TimePicker          android:id="@+id/timepicker"  android:layout_width="fill_parent"  android:layout_height="wrap_content" /></LinearLayout>

分析上述代码：在布局中放入两个时间选择空间，一个用来显示日期，一个用来显示时间

然后我们开始写自定义的时间选择器的类，代码如下：

类的名称为：DateTimePickerDialog

package com.jinbi.app.ui;import java.text.SimpleDateFormat;import java.util.Calendar;import android.app.Activity;import android.app.AlertDialog;import android.app.DatePickerDialog;import android.app.TimePickerDialog;import android.content.DialogInterface;import android.widget.DatePicker;import android.widget.DatePicker.OnDateChangedListener;import android.widget.EditText;import android.widget.LinearLayout;import android.widget.TimePicker;import android.widget.TimePicker.OnTimeChangedListener;import com.jinbi.R;public class DateTimePickerDialog implements OnDateChangedListener,OnTimeChangedListener{private DatePicker datePicker;private TimePicker timePicker;private AlertDialog ad;private String dateTime;private String initDateTime;private Activity activity;/** * 日期时间弹出选择框构 * @param activity:调用的父activity */public DateTimePickerDialog(Activity activity) {this.activity = activity;}public void init(DatePicker datePicker,TimePicker timePicker) {Calendar calendar = Calendar.getInstance();initDateTime = calendar.get(Calendar.YEAR)+"-"+calendar.get(Calendar.MONTH)+"-"+   calendar.get(Calendar.DAY_OF_MONTH)+" "+       calendar.get(Calendar.HOUR_OF_DAY)+":"+   calendar.get(Calendar.MINUTE)+   calendar.get(Calendar.SECOND);datePicker.init(calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH), this);timePicker.setCurrentHour(calendar.get(Calendar.HOUR_OF_DAY));timePicker.setCurrentMinute(calendar.get(Calendar.MINUTE));}public AlertDialog dateTimePickDialog(final EditText dateTimeTextEdite,int type) {Calendar c = Calendar.getInstance();switch (type) {case 1:new DatePickerDialog(activity, new DatePickerDialog.OnDateSetListener() {public void onDateSet(DatePicker view, int year, int monthOfYear,int dayOfMonth) {Calendar calendar = Calendar.getInstance();calendar.set(datePicker.getYear(), datePicker.getMonth(),datePicker.getDayOfMonth());SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd");dateTime = sdf.format(calendar.getTime());dateTimeTextEdite.setText(dateTime);}},c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DATE)).show();return null;case 2:new TimePickerDialog(activity,new TimePickerDialog.OnTimeSetListener() {@Overridepublic void onTimeSet(TimePicker view, int hourOfDay, int minute) {Calendar calendar = Calendar.getInstance();calendar.set(Calendar.YEAR,Calendar.MONTH,Calendar.DAY_OF_MONTH,     timePicker.getCurrentHour(),timePicker.getCurrentMinute());SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");dateTime = sdf.format(calendar.getTime());dateTimeTextEdite.setText(dateTime);}},c.get(Calendar.HOUR_OF_DAY),c.get(Calendar.MINUTE),true).show();return null;default:LinearLayout dateTimeLayout = (LinearLayout)activity.getLayoutInflater().inflate(R.layout.datetime, null);datePicker = (DatePicker)dateTimeLayout.findViewById(R.id.datepicker);timePicker = (TimePicker)dateTimeLayout.findViewById(R.id.timepicker);init(datePicker,timePicker);timePicker.setIs24HourView(true);timePicker.setOnTimeChangedListener(this);ad = new AlertDialog.Builder(activity).setTitle(initDateTime).setView(dateTimeLayout).setPositiveButton("设置", new DialogInterface.OnClickListener()       {        public void onClick(DialogInterface dialog,          int whichButton)        {         dateTimeTextEdite.setText(dateTime);        }       }).setNegativeButton("取消",       new DialogInterface.OnClickListener()       {        public void onClick(DialogInterface dialog,          int whichButton)        {         dateTimeTextEdite.setText("");        }       }).show();onDateChanged(null, 0, 0, 0);return ad;}}@Overridepublic void onTimeChanged(TimePicker arg0, int arg1, int arg2) {onDateChanged(null, 0, 0, 0);}@Overridepublic void onDateChanged(DatePicker view, int year, int monthOfYear,int dayOfMonth) {Calendar calendar = Calendar.getInstance();calendar.set(datePicker.getYear(), datePicker.getMonth(),datePicker.getDayOfMonth(),timePicker.getCurrentHour(),timePicker.getCurrentMinute());SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd HH:mm:ss");dateTime = sdf.format(calendar.getTime());ad.setTitle(dateTime);}}

至此，该控件就算写完成了

使用该控件的方法，如下：

dietTime.setOnClickListener(new OnClickListener() {public void onClick(View v) {   DateTimePickerDialog dateTimePicKDialog = new DateTimePickerDialog(     RecordActivity.this);       dateTimePicKDialog.dateTimePickDialog(dietTime, 0);}});

由于项目是直接部署在手机上的，所以截图不大方便，现在先不截图了，以后有机会再上图。

如果不太明白的，提供一些参考资料：

自定义日期和时间Demo