在开发中，可以通过DatePickerDialog来设置日期，TimePickerDialog来设置时间。
实例化DatePickerDialog对象之后，再调用show方法就可以显示对话框了。
具体的api如下所示：
public DatePickerDialog(Context context,
DatePickerDialog.OnDateSetListener callBack,
int year,
int monthOfYear,
int dayOfMonth)参数：
context- The context the dialog is to run in.（上下文）- - How the parent is notified that the date is set.(日期设置的监听器)
year- The initial year of the dialog.(初始的年份)monthOfYear- The initial month of the dialog.(初始的月份)dayOfMonth- The initial day of the dialog.(初始的日期)
注意：如果使用Calendar类的Calendar.MONTH来初始化月份monthOfYear，在获取月份时记得加1.因为Calendar.MONTH的月份是从0开始的，0表示1月份，1表示2月份。 具体的代码如下所示： MainActivity.java
package com.example.datepickerdialogdemo;
import java.util.Calendar;
import java.util.Date;
import android.os.Bundle;
import android.app.Activity;
import android.app.DatePickerDialog;
import android.app.TimePickerDialog;
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;
public class MainActivity extends Activity {
Button datePicker;
Button timePicker;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
datePicker=(Button)findViewById(R.id.date_picker);
timePicker=(Button)findViewById(R.id.time_picker);
datePicker.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Calendar calendar=Calendar.getInstance();
DatePickerDialog dpd=new DatePickerDialog(MainActivity.this, new DatePickerDialog.OnDateSetListener() {
@Override //监听日期的变化.
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) { //由于使用Calendar.MONTH初始化月份，而Calendar.MONTH是从0开始的，因此在获取月份时，记得加1.
EditText date = (EditText) findViewById(R.id.date_text);
date.setText( year + "-" + (monthOfYear+1)
+ "-" + dayOfMonth);
}
} , calendar.get(Calendar.YEAR), calendar.get(Calendar.MONTH), calendar.get(Calendar.DAY_OF_MONTH));
dpd.show();
}
});
timePicker.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub //时间设置的对话框和日期设置的对话框的构造方法非常类似。以下直接new对象调用show方法.省去不必要的对象命名
Calendar calendar=Calendar.getInstance();
new TimePickerDialog(MainActivity.this, new TimePickerDialog.OnTimeSetListener() {
@Override
public void onTimeSet(TimePicker picker, int hourOfDay, int minute) {
// TODO Auto-generated method stub
EditText time = (EditText) findViewById(R.id.time_text);
time.setText(hourOfDay+":"+minute);
}
}, calendar.get(Calendar.HOUR_OF_DAY), calendar.get(Calendar.MINUTE), true).show();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
activity_main.xml
<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: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"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/DatePicker"
android:id="@+id/date_picker"/>
<EditText
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:hint="select date"
android:id="@+id/date_text"
/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/TimePicker"
android:id="@+id/time_picker" />
<EditText
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:hint="select time"
android:id="@+id/time_text"
/>
</LinearLayout>
</LinearLayout>
strings.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
<string name="app_name">DatePickerDialogDemo</string>
<string name="action_settings">Settings</string>
<string name="hello_world">Hello world!</string>
<string name="DatePicker">日期</string>
<string name="TimePicker">时间</string>
</resources>
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.datepickerdialogdemo"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.datepickerdialogdemo.MainActivity"
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>
</manifest>
运行效果如下所示：
时间： 2024-08-01 14:47:15