Android控件之TimePicker、DatePicker

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1、TimePicker、DatePicker简介

在前两篇文章中，使用的是弹出框的形式用来，展示时间和日期，而TimePicker、DatePicker控件则是将时间和日期显示在布局上。效果如下

2、代码

这样的时间和日期控件就需要在xml布局文件中，编写这两个控件相关的布局代码，使用TimePicker、DatePicker标签。具体如下

<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"    tools:context="com.example.layout_timepicker.MainActivity">    <ScrollView android:layout_width="match_parent"    android:layout_height="match_parent"><RelativeLayout     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"     >    <TimePicker        android:id="@+id/timePicker1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentLeft="true"        android:layout_alignParentTop="true" />    <Button        android:id="@+id/button1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/timePicker1"        android:layout_below="@+id/timePicker1"        android:onClick="setTime"        android:text="Button" />    <DatePicker        android:id="@+id/datePicker1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:layout_alignParentLeft="true"        android:layout_below="@+id/button1" /><Button        android:id="@+id/button2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignLeft="@+id/datePicker1"        android:layout_below="@+id/datePicker1"        android:onClick="setDate"        android:text="Button" /></RelativeLayout></ScrollView></LinearLayout>

java代码实现了，点击按钮后，弹出相应的时间设置，java代码如下

package com.example.layout_timepicker;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.DatePicker;import android.widget.TimePicker;import android.widget.Toast;public class MainActivity extends Activity {private TimePicker timePicker;private DatePicker datePicker;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);timePicker = (TimePicker) findViewById(R.id.timePicker1);datePicker = (DatePicker) findViewById(R.id.datePicker1);}public void setTime(View view){int hour = timePicker.getCurrentHour();int minute = timePicker.getCurrentMinute();Toast.makeText(this, hour + ":" + minute, Toast.LENGTH_SHORT).show();}public void setDate(View view){int year = datePicker.getYear();int month = datePicker.getMonth();int day = datePicker.getDayOfMonth();Toast.makeText(this, year + "年" + month + "月" + day + "日", Toast.LENGTH_SHORT).show();}@Overridepublic 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;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {int id = item.getItemId();if (id == R.id.action_settings) {return true;}return super.onOptionsItemSelected(item);}}

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