Android之日期及时间选择对话框用法实例分析

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.ljq.dialog" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".AlertDialog"   android:label="@string/app_name">  <intent-filter>  <action android:name="android.intent.action.MAIN" />  <category android:name="android.intent.category.LAUNCHER" />  </intent-filter> </activity> </application> <uses-sdk android:minSdkVersion="7" /> <uses-permission android:name="android.permission.WRITE_CALENDAR" /></manifest> 

<?xml version="1.0" encoding="utf-8"?><LinearLayout android:id="@+id/LinearLayout01" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" xmlns:android="http://schemas.android.com/apk/res/android"> <EditText android:id="@+id/et"  android:layout_width="fill_parent" android:layout_height="wrap_content"  android:editable="false" android:cursorVisible="false" /> <Button android:text="日期对话框"  android:id="@+id/dateBtn" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <Button android:text="时间对话框"  android:id="@+id/timeBtn" android:layout_width="fill_parent" android:layout_height="wrap_content" /> <DigitalClock  android:text="@+id/digitalClock" android:textSize="20dip"  android:gravity="center" android:id="@+id/DigitalClock01"  android:layout_width="fill_parent" android:layout_height="wrap_content" /> <AnalogClock  android:id="@+id/analogClock" android:gravity="center"  android:layout_width="fill_parent" android:layout_height="wrap_content" /></LinearLayout>

package com.ljq.dialog;import java.util.Calendar;import android.app.Activity;import android.app.DatePickerDialog;import android.app.Dialog;import android.app.TimePickerDialog;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.DatePicker;import android.widget.EditText;import android.widget.TimePicker;public class AlertDialog extends Activity { private Button dateBtn = null; private Button timeBtn = null; private EditText et=null; private final static int DATE_DIALOG = 0; private final static int TIME_DIALOG = 1; private Calendar c = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); et=(EditText)findViewById(R.id.et); dateBtn = (Button) findViewById(R.id.dateBtn); timeBtn = (Button) findViewById(R.id.timeBtn); dateBtn.setOnClickListener(new View.OnClickListener(){  public void onClick(View v) {  showDialog(DATE_DIALOG);  } }); timeBtn.setOnClickListener(new View.OnClickListener(){  public void onClick(View v) {  showDialog(TIME_DIALOG);  } }); } /** * 创建日期及时间选择对话框 */ @Override protected Dialog onCreateDialog(int id) { Dialog dialog = null; switch (id) { case DATE_DIALOG:  c = Calendar.getInstance();  dialog = new DatePickerDialog(  this,  new DatePickerDialog.OnDateSetListener() {   public void onDateSet(DatePicker dp, int year,int month, int dayOfMonth) {   et.setText("您选择了：" + year + "年" + (month+1) + "月" + dayOfMonth + "日");   }  },   c.get(Calendar.YEAR), // 传入年份  c.get(Calendar.MONTH), // 传入月份  c.get(Calendar.DAY_OF_MONTH) // 传入天数  );  break; case TIME_DIALOG:  c=Calendar.getInstance();  dialog=new TimePickerDialog(  this,   new TimePickerDialog.OnTimeSetListener(){   public void onTimeSet(TimePicker view, int hourOfDay, int minute) {   et.setText("您选择了："+hourOfDay+"时"+minute+"分");   }  },  c.get(Calendar.HOUR_OF_DAY),  c.get(Calendar.MINUTE),  false  );  break; } return dialog; }}