Android基于wheelView实现自定义日期选择器

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我是靠谱客的博主专注龙猫，最近开发中收集的这篇文章主要介绍Android基于wheelView实现自定义日期选择器，觉得挺不错的，现在分享给大家，希望可以做个参考。

概述

本文实例为大家分享了Android实现自定义日期选择器的具体代码，供大家参考，具体内容如下

项目要求效果图：

要求 “6月20 星期五” 这一项作为一个整体可以滑动，”7时”、”48分”分别作为一个滑动整体。

系统自带的DatePicker、TimePicker大家都知道，只有这种效果:

百度了很多，试了NumberPicker等都不行，本来打算自己写。网友推荐了一个开源组件WheelView，下下来试了试，发现他已经定义的很完善了，在他的基础上拓展很容易。

现将基于wheelView自定义日期选择器记录如下：

一.首先要了解WheelView为我们提供了什么：

除了我写的”DateObject”与”StringWheelAdapter”，其余都是WheelView提供的，

1. WheelView.java ：可滚动的组件

主要方法：

setAdapter(new StringWheelAdapter(dateList, 7)); //设置Adapter 
setVisibleItems(3); //设置显示几行数据 
setCyclic(true); //设置是否循环显示数据 
addChangingListener(onDaysChangedListener) //设置滑动监听器

2. WheelAdapter.java : 滑动组件的适配器的接口，子类适配器用于装载数据

public interface WheelAdapter {
 /**
 * Gets items count
 * @return the count of wheel items
 */
 public int getItemsCount();

 /**
 * Gets a wheel item by index.
 * 
 * @param index the item index
 * @return the wheel item text or null
 */
 public String getItem(int index);

 /**
 * Gets maximum item length. It is used to determine the wheel width. 
 * If -1 is returned there will be used the default wheel width.
 * 
 * @return the maximum item length or -1
 */
 public int getMaximumLength();
}

3. OnWheelChangedListener.java : 滑动监听器接口

public interface OnWheelChangedListener {
 /**
 * Callback method to be invoked when current item changed
 * @param wheel the wheel view whose state has changed
 * @param oldValue the old value of current item
 * @param newValue the new value of current item
 */
 void onChanged(WheelView wheel, int oldValue, int newValue);
}

4.OnWheelScrollListener.java ：滚动监听器接口(暂时没用到)

5.NumericWheelAdapter.java : 当滚动内容为纯数字时调用的适配器

6.DateObject.java : 日期实体类，用于存储、获取选择的数据

package kankan.wheel.widget;

import java.util.Calendar;

public class DateObject extends Object{
 private int year ;
 private int month;
 private int day;
 private int week;
 private int hour;
 private int minute;
 private String listItem;

 /**
 * 日期对象的4个参数构造器，用于设置日期
 * @param year
 * @param month
 * @param day
 * @author sxzhang
 */
 public DateObject(int year2, int month2, int day2,int week2) {
 super();
 this.year = year2;
 int maxDayOfMonth = Calendar.getInstance().getActualMaximum(Calendar.DAY_OF_MONTH);
 if(day2 > maxDayOfMonth){
  this.month = month2 + 1;
  this.day = day2 % maxDayOfMonth;
 }else{
  this.month = month2;
  this.day = day2;
 }
 this.week = week2 % 7 == 0 ? 7 : week2 % 7;

 if(day == Calendar.getInstance().get(Calendar.DAY_OF_MONTH)){
  this.listItem = String.format("%02d", this.month) +"月" + String.format("%02d", this.day) + 
   "日 "+ " 今天 ";
 }else{
  this.listItem = String.format("%02d", this.month) +"月" + String.format("%02d", this.day) + 
   "日 "+ getDayOfWeekCN(week);
 }

 }

 /**
 * 日期对象的2个参数构造器，用于设置时间
 * @param hour2
 * @param minute2
 * @param isHourType true:传入的是hour; false: 传入的是minute
 * @author sxzhang
 */
 public DateObject(int hour2,int minute2,boolean isHourType) {
 super();
 if(isHourType == true && hour2 != -1){ //设置小时
  if(hour2 > 24){
  this.hour = hour2 % 24;
  }else
  this.hour = hour2;
  this.listItem = this.hour + "时";
 }else if(isHourType == false && minute2 != -1){ //设置分钟
  if(minute2 > 60)
  this.minute = minute2 % 60;
  else
  this.minute = minute2;
  this.listItem = this.minute + "分";
 }
 }

 public int getHour() {
 return hour;
 }

 public void setHour(int hour) {
 this.hour = hour;
 }

 public int getMinute() {
 return minute;
 }

 public void setMinute(int minute) {
 this.minute = minute;
 }

 public int getWeek() {
 return week;
 }

 public void setWeek(int week) {
 this.week = week;
 }

 public int getYear() {
 return year;
 }
 public void setYear(int year) {
 this.year = year;
 }
 public int getMonth() {
 return month;
 }
 public void setMonth(int month) {
 this.month = month;
 }
 public int getDay() {
 return day;
 }
 public void setDay(int day) {
 this.day = day;
 }
 public String getListItem() {
 return listItem;
 }
 public void setListItem(String listItem) {
 this.listItem = listItem;
 }

 /**
 * 根据day_of_week得到汉字星期
 * @return
 */
 public static String getDayOfWeekCN(int day_of_week){
 String result = null;
 switch(day_of_week){
 case 1:
  result = "星期日";
  break;
 case 2:
  result = "星期一";
  break;
 case 3:
  result = "星期二";
  break;
 case 4:
  result = "星期三";
  break;
 case 5:
  result = "星期四";
  break;
 case 6:
  result = "星期五";
  break;
 case 7:
  result = "星期六";
  break; 
 default:
  break;
 }
 return result;
 }
}

7.StringWheelAdapter.java :一会儿将定义的滚动内容为字符串的适配器，当内容为字符串时我们就可以随意拓展滑动部分的内容

package kankan.wheel.widget;

import java.util.ArrayList;

/**
 * The simple String Array wheel adapter
 * 
 */
public class StringWheelAdapter implements WheelAdapter {

 /** The default items length */
 public static final int DEFAULT_LENGTH = -1;

 // items
 private ArrayList<DateObject> list;

 // length
 private int length;

 /**
 * Constructor
 * @param items the items
 * @param length the max items length
 */
 public StringWheelAdapter(ArrayList<DateObject> list, int length) {
 this.list = list;
 this.length = length;
 }


 @Override
 public String getItem(int index) {
 if (index >= 0 && index < list.size()) {
  return list.get(index).getListItem();
 }
 return null;
 }

 @Override
 public int getItemsCount() {
 return list.size();
 }

 @Override
 public int getMaximumLength() {
 return length;
 }

}

二.了解以后就可以使用他定义我们需要的了。

1.首先要做的是这个效果的部分：

我们将其命名为DatePicker：

package com.sxkeji.timeswitch.widget;

import java.util.ArrayList;
import java.util.Calendar;

import kankan.wheel.widget.DateObject;
import kankan.wheel.widget.OnWheelChangedListener;
import kankan.wheel.widget.StringWheelAdapter;
import kankan.wheel.widget.WheelView;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.LinearLayout;

/**
 * 自定义的日期选择器
 * @author sxzhang
 *
 */
public class DatePicker extends LinearLayout {

 private Calendar calendar = Calendar.getInstance(); 
 private WheelView newDays;
 private ArrayList<DateObject> dateList ;
 private OnChangeListener onChangeListener; //onChangeListener
 private final int MARGIN_RIGHT = 20;
 private DateObject dateObject; //日期数据对象
 //Constructors
 public DatePicker(Context context) {
 super(context);
 init(context);
 }

 public DatePicker(Context context, AttributeSet attrs) {
 super(context, attrs);
 init(context);
 }

 /**
 * 初始化
 * @param context
 */
 private void init(Context context){
 int year = calendar.get(Calendar.YEAR);
 int month = calendar.get(Calendar.MONTH) + 1;
 int day = calendar.get(Calendar.DAY_OF_MONTH);
 int week = calendar.get(Calendar.DAY_OF_WEEK);
 dateList = new ArrayList<DateObject>();
 for (int i = 0; i < 7; i++) {
  dateObject = new DateObject(year, month, day+i, week+i);
  dateList.add(dateObject);
 }

 newDays = new WheelView(context);
 LayoutParams newDays_param = new LayoutParams(300,LayoutParams.WRAP_CONTENT);
 newDays_param.setMargins(0, 0, MARGIN_RIGHT, 0);
 newDays.setLayoutParams(newDays_param);
 newDays.setAdapter(new StringWheelAdapter(dateList, 7));
 newDays.setVisibleItems(3);
 newDays.setCyclic(true);
 newDays.addChangingListener(onDaysChangedListener); 
 addView(newDays);
 }

 /**
 * 滑动改变监听器
 */
 private OnWheelChangedListener onDaysChangedListener = new OnWheelChangedListener(){
 @Override
 public void onChanged(WheelView mins, int oldValue, int newValue) {
  calendar.set(Calendar.DAY_OF_MONTH, newValue + 1);
  change();
 }
 };

 /**
 * 滑动改变监听器回调的接口
 */
 public interface OnChangeListener {
 void onChange(int year, int month, int day, int day_of_week);
 }

 /**
 * 设置滑动改变监听器
 * @param onChangeListener
 */
 public void setOnChangeListener(OnChangeListener onChangeListener){
 this.onChangeListener = onChangeListener;
 }

 /**
 * 滑动最终调用的方法
 */
 private void change(){
 if(onChangeListener!=null){
  onChangeListener.onChange(
   dateList.get(newDays.getCurrentItem()).getYear(), 
   dateList.get(newDays.getCurrentItem()).getMonth(), 
   dateList.get(newDays.getCurrentItem()).getDay(), 
   dateList.get(newDays.getCurrentItem()).getWeek());
 }
 }


 /**
 * 根据day_of_week得到汉字星期
 * @return
 */
 public static String getDayOfWeekCN(int day_of_week){
 String result = null;
 switch(day_of_week){
 case 1:
  result = "星期日";
  break;
 case 2:
  result = "星期一";
  break;
 case 3:
  result = "星期二";
  break;
 case 4:
  result = "星期三";
  break;
 case 5:
  result = "星期四";
  break;
 case 6:
  result = "星期五";
  break;
 case 7:
  result = "星期六";
  break; 
 default:
  break;
 }
 return result;
 }


 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 }
}

2.然后要做的是这个效果的部分

我们命名为TimePicker:

package com.sxkeji.timeswitch.widget;

import java.util.ArrayList;
import java.util.Calendar;

import kankan.wheel.widget.DateObject;
import kankan.wheel.widget.OnWheelChangedListener;
import kankan.wheel.widget.StringWheelAdapter;
import kankan.wheel.widget.WheelView;
import android.content.Context;
import android.util.AttributeSet;
import android.widget.LinearLayout;

/**
 * 自定义的时间选择器
 * @author sxzhang
 *
 */
public class TimePicker extends LinearLayout{

 private Calendar calendar = Calendar.getInstance(); 
 private WheelView hours, mins; //Wheel picker
 private OnChangeListener onChangeListener; //onChangeListener
 private final int MARGIN_RIGHT = 15; //调整文字右端距离
 private ArrayList<DateObject> hourList,minuteList;
 private DateObject dateObject; //时间数据对象
 //Constructors
 public TimePicker(Context context) {
 super(context);
 init(context);
 }

 public TimePicker(Context context, AttributeSet attrs) {
 super(context, attrs);
 init(context);
 }

 /**
 * 初始化
 * @param context
 */
 private void init(Context context){
 int hour = calendar.get(Calendar.HOUR_OF_DAY);
 int minute = calendar.get(Calendar.MINUTE);
 hourList = new ArrayList<DateObject>();
 minuteList = new ArrayList<DateObject>();

 for (int i = 0; i < 24; i++) {
  dateObject = new DateObject(hour+i,-1,true);
  hourList.add(dateObject);
 }

 for (int j = 0; j < 60; j++) {
  dateObject = new DateObject(-1,minute+j,false);
  minuteList.add(dateObject);
 }

 //小时选择器
 hours = new WheelView(context);
 LayoutParams lparams_hours = new LayoutParams(80,LayoutParams.WRAP_CONTENT);
 lparams_hours.setMargins(0, 0, MARGIN_RIGHT, 0);
 hours.setLayoutParams(lparams_hours);
 hours.setAdapter(new StringWheelAdapter(hourList, 24));
 hours.setVisibleItems(3);
 hours.setCyclic(true);
 hours.addChangingListener(onHoursChangedListener); 
 addView(hours); 

 //分钟选择器
 mins = new WheelView(context);
 mins.setLayoutParams(new LayoutParams(80,LayoutParams.WRAP_CONTENT));
 mins.setAdapter(new StringWheelAdapter(minuteList,60));
 mins.setVisibleItems(3);
 mins.setCyclic(true);
 mins.addChangingListener(onMinsChangedListener); 
 addView(mins); 
 }

 

 //listeners
 private OnWheelChangedListener onHoursChangedListener = new OnWheelChangedListener(){
 @Override
 public void onChanged(WheelView hours, int oldValue, int newValue) {
  calendar.set(Calendar.HOUR_OF_DAY, newValue);
  change();
 }
 };
 private OnWheelChangedListener onMinsChangedListener = new OnWheelChangedListener(){
 @Override
 public void onChanged(WheelView mins, int oldValue, int newValue) {
  calendar.set(Calendar.MINUTE, newValue);
  change();
 }
 };

 /**
 * 滑动改变监听器回调的接口
 */
 public interface OnChangeListener {
 void onChange(int hour, int munite);
 }

 /**
 * 设置滑动改变监听器
 * @param onChangeListener
 */
 public void setOnChangeListener(OnChangeListener onChangeListener){
 this.onChangeListener = onChangeListener;
 }

 /**
 * 滑动最终调用的方法
 */
 private void change(){
 if(onChangeListener!=null){
  onChangeListener.onChange(getHourOfDay(), getMinute());
 }
 }


 /**
 * 获取小时
 * @return
 */
 public int getHourOfDay(){
 return hourList.get(hours.getCurrentItem()).getHour();
 }

 /**
 * 获取分钟
 * @return
 */
 public int getMinute(){
 return minuteList.get(mins.getCurrentItem()).getMinute();
 }

 @Override
 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
 super.onMeasure(widthMeasureSpec, heightMeasureSpec);
 }
}

3.最后就可以直接使用了，我这里主界面是一个button,点击后弹出popupWindow显示日期选择器。布局文件及主Activity如下：

popupWindow布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:orientation="vertical" 
 android:background="#FFF">
 <View 
 android:layout_width="match_parent"
 android:layout_height="1dp"
 android:background="#f5f5f5"/>
 <RelativeLayout 
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="horizontal"
 android:padding="10dp">
 <TextView
  android:id="@+id/tv_cancel"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="取消"
  android:layout_marginLeft="10dp"
  android:layout_alignParentLeft="true"
  android:textColor="#000000"
  android:textSize="20sp" />

 <TextView
  android:id="@+id/tv_ok"
  android:layout_width="wrap_content"
  android:layout_height="wrap_content"
  android:text="确定"
  android:layout_marginRight="10dp"
  android:layout_alignParentRight="true"
  android:textColor="#000000"
  android:textSize="20sp" />

 </RelativeLayout>
 <View 
 android:layout_width="match_parent"
 android:layout_height="1dp"
 android:background="#f5f5f5"/>
 <LinearLayout 
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="horizontal"
 android:layout_marginTop="10dp"
 android:padding="20dp">
  <com.sxkeji.timeswitch.widget.DatePicker
  android:id="@+id/dp_test"
  android:layout_width="0dp"
  android:layout_height="wrap_content"
  android:layout_weight="3"
  android:gravity="center"
  android:layout_gravity="center_horizontal"/>

 <com.sxkeji.timeswitch.widget.TimePicker
  android:id="@+id/tp_test"
  android:layout_width="0dp"
  android:layout_height="wrap_content"
  android:layout_weight="2"
  android:gravity="center"
  android:layout_gravity="center_horizontal"/>
 </LinearLayout>


</LinearLayout>

主界面布局文件:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="fill_parent"
 android:layout_height="fill_parent"
 android:background="#FFF"
 android:id="@+id/Rl_all">
 <LinearLayout 
 android:layout_width="match_parent"
 android:layout_height="wrap_content"
 android:orientation="vertical"
 android:layout_alignParentBottom="true"
 android:padding="10dp"
 android:gravity="center">
 <View 
  android:layout_width="match_parent"
  android:layout_height="1dp"
  android:background="#f5f5f5"/>
 <Button 
  android:id="@+id/btn_naozhong"
  android:layout_width="30dp"
  android:layout_height="30dp"
  android:background="@drawable/naozhong"
  />
 </LinearLayout>
</RelativeLayout>

Activity代码：

package com.sxkeji.timeswitch.activity;

import java.util.Calendar;

import org.unism.wang.R;

import com.sxkeji.timeswitch.widget.DatePicker;
import com.sxkeji.timeswitch.widget.TimePicker;

import android.app.Activity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.PopupWindow;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

/**
 * 主页面
 * @author sxzhang
 */
public class MyPickerActivity extends Activity {
 private Calendar calendar;
 private DatePicker dp_test;
 private TimePicker tp_test;
 private TextView tv_ok,tv_cancel; //确定、取消button
 private Button btn_naozhong;
 private PopupWindow pw;
 private String selectDate,selectTime;
 //选择时间与当前时间，用于判断用户选择的是否是以前的时间
 private int currentHour,currentMinute,currentDay,selectHour,selectMinute,selectDay;
 //整体布局
 private RelativeLayout Rl_all;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.main);

 Rl_all = (RelativeLayout) findViewById(R.id.Rl_all);
 btn_naozhong = (Button) findViewById(R.id.btn_naozhong);
 calendar = Calendar.getInstance();

 btn_naozhong.setOnClickListener(new OnClickListener() {
  @Override
  public void onClick(View arg0) {
  View view = View.inflate(MyPickerActivity.this, R.layout.dialog_select_time, null);
  selectDate = calendar.get(Calendar.YEAR) + "年" + calendar.get(Calendar.MONTH) + "月" 
   + calendar.get(Calendar.DAY_OF_MONTH) + "日" 
   + DatePicker.getDayOfWeekCN(calendar.get(Calendar.DAY_OF_WEEK));
  //选择时间与当前时间的初始化，用于判断用户选择的是否是以前的时间，如果是，弹出toss提示不能选择过去的时间
  selectDay = currentDay = calendar.get(Calendar.DAY_OF_MONTH);
  selectMinute = currentMinute = calendar.get(Calendar.MINUTE);
  selectHour = currentHour = calendar.get(Calendar.HOUR_OF_DAY);

  selectTime = currentHour + "点" + ((currentMinute < 10)?("0"+currentMinute):currentMinute) + "分";
  dp_test = (DatePicker)view.findViewById(R.id.dp_test);
  tp_test = (TimePicker)view.findViewById(R.id.tp_test);
  tv_ok = (TextView) view.findViewById(R.id.tv_ok);
  tv_cancel = (TextView) view.findViewById(R.id.tv_cancel);
  //设置滑动改变监听器
  dp_test.setOnChangeListener(dp_onchanghelistener);
  tp_test.setOnChangeListener(tp_onchanghelistener);
  pw = new PopupWindow(view, LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT, true);
//  //设置这2个使得点击pop以外区域可以去除pop
//  pw.setOutsideTouchable(true);
//  pw.setBackgroundDrawable(new BitmapDrawable());

  //出现在布局底端
  pw.showAtLocation(Rl_all, 0, 0, Gravity.END);

  //点击确定
  tv_ok.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View arg0) {
   if(selectDay == currentDay ){ //在当前日期情况下可能出现选中过去时间的情况
    if(selectHour < currentHour){
    Toast.makeText(getApplicationContext(), "不能选择过去的时间n 请重新选择", 0).show();
    }else if( (selectHour == currentHour) && (selectMinute < currentMinute) ){
    Toast.makeText(getApplicationContext(), "不能选择过去的时间n 请重新选择", 0).show();
    }else{
    Toast.makeText(getApplicationContext(), selectDate+selectTime, 0).show();
    pw.dismiss();
    }
   }else{
    Toast.makeText(getApplicationContext(), selectDate+selectTime, 0).show();
    pw.dismiss();
   }
   }
  });

  //点击取消
  tv_cancel.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View arg0) {
   pw.dismiss();
   }
  });
  }
 });
 }

 //listeners
 DatePicker.OnChangeListener dp_onchanghelistener = new DatePicker.OnChangeListener() {
 @Override
 public void onChange(int year, int month, int day, int day_of_week) {
  selectDay = day;
  selectDate = year + "年" + month + "月" + day + "日" + DatePicker.getDayOfWeekCN(day_of_week);
 }
 };
 TimePicker.OnChangeListener tp_onchanghelistener = new TimePicker.OnChangeListener() {
 @Override
 public void onChange(int hour, int minute) {
  selectTime = hour + "点" + ((minute < 10)?("0"+minute):minute) + "分";
  selectHour = hour;
  selectMinute = minute;
 }
 };
}

最终效果图：