需求
我们知道,Android系统本身有自带的日历控件,网络上也有很多开源的日历控件资源,但是这些日历控件往往样式较单一,API较多,不易于在实际项目中扩展并实现出符合具体样式风格的,内容可定制的效果。本文通过自定义日历控件,实现了在内容和样式上可高度扩展的精美日历demo,有需要的Android应用开发人员可迅速移植并按需扩展实现。
在某个应用中,需要查询用户的历史考勤记录,根据实际考勤数据在日历中标记出不同的状态(如正常出勤、请假、迟到等),并在页面中显示相应的说明文字。
效果
实现的效果如下
附上源码地址:http://download.csdn.net/detail/daijin888888/9020535
(直接导入Eclipse ADT即可,出现乱码请调整项目编码,笔者的是UTF-8编码)
实现方式
首先说明涉及的主要知识点:
- GridView+Adapter
- 日历算法
项目结构图如下:
com.widget.mycalendar 包下是主要的实现部分:
首先看自定义日历GridView,
CalendarGridView.java:自定义日历GridView,此处可扩展样式,可实现日历中每个网格(对应某一天)的长按效果。
package com.widget.mycalendar;
import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
/**
* @author daij
* @version 1.0 自定义日历GridView
*/
public class CalendarGridView extends GridView implements
android.widget.AdapterView.OnItemLongClickListener {
private Context mContext;
public CalendarGridView(Context context) {
super(context);
this.mContext = context;
initGridView();
}
public CalendarGridView(Context context, AttributeSet attrs) {
super(context, attrs);
this.mContext = context;
initGridView();
}
public CalendarGridView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
this.mContext = context;
initGridView();
}
/**
* 初始化GirdView
*
* @param <参数名称>
* <参数类型> <参数说明>
* @return <返回值类型>
* @throws <异常>
*/
public void initGridView() {
}
@Override
public boolean onItemLongClick(AdapterView<?> parent, View view,
int position, long id) {
return false;
}
}
CalendarGridViewAdapter.java:日历适配器,这里提供的是模拟数据,根据不同日期的属性控制不同显示,对具体的网格赋值和选择性控制样式(实现多样化)。
package com.widget.mycalendar;
import java.util.List;
import android.content.Context;
import android.content.res.Resources;
import android.text.TextUtils;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.LinearLayout;
import android.widget.TextView;
import com.example.mycalendar.R;
/**
* @author daij
* @version 1.0 日历适配器
*/
public class CalendarGridViewAdapter extends BaseAdapter {
private Resources mRes;
/** 上下文 */
private Context mContext;
/** 日期实体集合 */
private List<DateEntity> mDataList;
/** 因为position是从0开始的,所以用当做一个中间者,用来加1.以达到判断除数时,为哪个星期 */
private int temp;
public CalendarGridViewAdapter(Context context, Resources res) {
this.mContext = context;
this.mRes = res;
}
/** 设置日期数据 */
public void setDateList(List<DateEntity> dataList) {
this.mDataList = dataList;
}
@Override
public int getCount() {
if (mDataList == null) {
return 0;
}
return mDataList.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// 通过传递过来的MenuItem值给每一个item设置数据
LinearLayout layout = (LinearLayout) LayoutInflater.from(mContext)
.inflate(R.layout.calendar_item_layout, null);
TextView textView = (TextView) layout
.findViewById(R.id.calendar_item_tv_day);
TextView tv_tip = (TextView) layout.findViewById(R.id.calendar_tip);
if (mDataList != null) {
textView.setText(mDataList.get(position).day + "");
if ((TextUtils.equals(CalendarTool.SATURDAY,
mDataList.get(position).weekDay))
|| TextUtils.equals(CalendarTool.SUNDAY,
mDataList.get(position).weekDay)) {
// 周末背景为白,字体为灰色
textView.setBackgroundColor(mRes.getColor(R.color.white));
textView.setTextColor(mRes.getColor(R.color.weekend_day_txt));
}// TODO 在非周末时候设置颜色
else {
if (((mDataList.get(position).year == 2015 && mDataList
.get(position).month <= 8) || (mDataList.get(position).year < 2015 && mDataList
.get(position).month <= 12))
&& mDataList.get(position).isSelfMonthDate) {// 2015.8以前,且日期在当月
if (mDataList.get(position).day > 0
&& mDataList.get(position).day <= 20
|| mDataList.get(position).day == 25) {
tv_tip.setBackgroundColor(mRes
.getColor(R.color.tip_normal));
} else if (mDataList.get(position).day == 21
|| mDataList.get(position).day == 22) {
tv_tip.setBackgroundColor(mRes
.getColor(R.color.tip_leave));
} else if (mDataList.get(position).day == 23
|| mDataList.get(position).day == 24) {
tv_tip.setBackgroundColor(mRes
.getColor(R.color.tip_late));
} else {
tv_tip.setBackgroundColor(mRes
.getColor(R.color.tip_normal));
if (mDataList.get(position).month == 8
&& mDataList.get(position).day >= 25) {
tv_tip.setBackgroundColor(mRes
.getColor(R.color.white));
}
}
}
}
if (mDataList.get(position).isNowDate
&& mDataList.get(position).isSelfMonthDate) {
// 如果为当前号数,则设置为白色背景并,字体为蓝色
textView.setBackgroundColor(mRes.getColor(R.color.white));
textView.setTextColor(mRes.getColor(R.color.current_day_txt));
}
if (!mDataList.get(position).isSelfMonthDate) {// 是否为本月的号数,不是本月号数显示白色,及不显示
textView.setTextColor(mRes.getColor(R.color.white));
}
layout.setTag(mDataList.get(position));// 把当前日历实体放入GridView 的Item中
}
return layout;
}
}
CalendarTool.java: 获取日历数据工具类,实现日历算法,包括闰年判断,配有详细注释可参考
package com.widget.mycalendar;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import android.content.Context;
import android.graphics.Point;
import android.util.Log;
/**
* @author daij
* @version 1.0 获取日历数据工具类
*/
public class CalendarTool {
public static final String MONDAY = "周一";
public static final String TUESDAY = "周二";
public static final String WEDNESDAY = "周三";
public static final String THURSDAY = "周四";
public static final String FRIDAY = "周五";
public static final String SATURDAY = "周六";
public static final String SUNDAY = "周日";
public static final String[] weekDayRow = { SUNDAY, MONDAY, TUESDAY,
WEDNESDAY, THURSDAY, FRIDAY, SATURDAY };
private List<DateEntity> mDataList = new ArrayList<DateEntity>();
private DateEntity mDateEntity;
private int mYear;
private int mMonth;
private int mDay;
private int mDays;
/** 系统当前年月日 */
private int mCurrenYear;
private int mCurrenMonth;
private int mCurrenDay;
private Context mContext;
/** 用于算法的变量 */
/** 已过去的年份总天数 */
int mGoneYearDays = 0;
/** 本年包括今天的过去天数 */
int thisYearDays = 0;
/** 是否为闰年 */
boolean isLeapYear = false;
/** 平年月天数数组 */
int commonYearMonthDay[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
/** 闰年月天数数组 */
int leapYearMonthDay[] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
public CalendarTool(Context context) {
this.mContext = context;
initNowDate();
}
/** 获取当前日历的年月 x为年,y为月 */
public Point getNowCalendar() {
Point p = new Point(mYear, mMonth);
return p;
}
/** 通过年月获取日期实体集合 集合大小为7*6=42,星期为7,6行以显示足够数量日期 */
public List<DateEntity> getDateEntityList(int year, int month) {
mDataList.clear();
int dayOfNowCalendar = 42;// 当前日历板的日期总数 7*6个数
int dayOfWeek = 0;// 得到当前年月的每一天为星期几
int selfDaysEndWeek = 0;// 本月的最后一天是星期几
int startDate = 0;// 当前月的上一个月在本日历的开始日期
int days = 0;// 得到本月的总共天数
/** 修改部分 */
int endDate = 0;// 得到上一个月的天数,作为上一个月在本日历的结束日期
if ((year - 1) == this.mYear || month == 1) {// 说明向前翻了一年,那么上个月的天数就应该是上一年的12月的天数,或者到翻到一月份的时候,那么上一个月的天数也是上一年的12月份的天数
endDate = this.getDays(year - 1, 12);
} else {// 得到上一个月的天数,作为上一个月在本日历的结束日期
endDate = this.getDays(year, month - 1);
}
/** 修改部分结束 */
this.mYear = year;// 当前日历上显示的年
this.mMonth = month;// 当前日历上显示的月
int previoursMonthDays = 0;// 上一个月在本月显示的天数
int nextMonthDays = 0;// 下一个月在本月显示的天数
days = this.getDays(year, month);
dayOfWeek = this.getWeekDay(year, month);
if (dayOfWeek == 0) {
startDate = endDate - 7 + 1;
} else {
startDate = endDate - dayOfWeek + 1;
}
previoursMonthDays = endDate - startDate + 1;
nextMonthDays = dayOfNowCalendar - days - previoursMonthDays;
/** 先添加前面不属于本月的 */
for (int i = startDate, j = 0; i <= endDate; i++, j++) {
mDateEntity = new DateEntity();
mDateEntity.day = i;
mDateEntity.isSelfMonthDate = false;
mDateEntity.year = year;
mDateEntity.month = month - 1;
mDateEntity.weekDay = weekDayRow[j];
mDataList.add(mDateEntity);
}
/** 添加本月的 */
for (int i = 1, j = dayOfWeek; i <= days; i++, j++) {
mDateEntity = new DateEntity();
mDateEntity.day = i;
mDateEntity.isSelfMonthDate = true;
mDateEntity.year = year;
mDateEntity.month = month;
if (j >= 7) {
j = 0;
}
selfDaysEndWeek = j;
mDateEntity.weekDay = weekDayRow[j];
if ((year == mCurrenYear) && (month == mCurrenMonth)
&& i == mCurrenDay) {
mDateEntity.isNowDate = true;
}
mDataList.add(mDateEntity);
}
/*** 添加后面下一个月的 */
for (int i = 1, j = selfDaysEndWeek + 1; i <= nextMonthDays; i++, j++) {
mDateEntity = new DateEntity();
mDateEntity.day = i;
mDateEntity.isSelfMonthDate = false;
mDateEntity.year = year;
mDateEntity.month = month + 1;
if (j >= 7) {
j = 0;
}
mDateEntity.weekDay = weekDayRow[j];
mDataList.add(mDateEntity);
}
return mDataList;
}
/** 通过年月,获取这个月一共有多少天 */
public int getDays(int year, int month) {
int days = 0;
if ((year % 4 == 0 && (year % 100 != 0)) || (year % 400 == 0)) {
if (month > 0 && month <= 12) {
days = leapYearMonthDay[month - 1];
}
} else {
if (month > 0 && month <= 12) {
days = commonYearMonthDay[month - 1];
}
}
return days;
}
/** 获取星期的排列 */
public String[] getWeekDayRow() {
return weekDayRow;
}
/** 初始化当前系统的日期 */
public void initNowDate() {
Date date = new Date();
SimpleDateFormat simpleFormat = new SimpleDateFormat("yyyy-M-d");
String currentDate = simpleFormat.format(date); // 当期日期
mCurrenYear = Integer.parseInt(currentDate.split("-")[0]);
mCurrenMonth = Integer.parseInt(currentDate.split("-")[1]);
mCurrenDay = Integer.parseInt(currentDate.split("-")[2]);
this.mYear = mCurrenYear;
this.mMonth = mCurrenMonth;
}
/** 通过年,月获取当前月的第一天1日为星期几 ,返回0是星期天,1是星期一,依次类推 */
public int getWeekDay(int year, int month) {
int dayOfWeek;
int goneYearDays = 0;
int thisYearDays = 0;
boolean isLeapYear = false;
int commonYearMonthDay[] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31,
30, 31 };
int leapYearMonthDay[] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30,
31 };
for (int i = 1900; i < year; i++) {// 从1900年开始算起,1900年1月1日为星期一
if ((i % 4 == 0 && (i % 100 != 0)) || (i % 400 == 0)) {
goneYearDays = goneYearDays + 366;
} else {
goneYearDays = goneYearDays + 365;
}
}
if ((year % 4 == 0 && (year % 100 != 0)) || (year % 400 == 0)) {
isLeapYear = true;
for (int i = 0; i < month - 1; i++) {
thisYearDays = thisYearDays + leapYearMonthDay[i];
}
} else {
isLeapYear = false;
for (int i = 0; i < month - 1; i++) {
thisYearDays = thisYearDays + commonYearMonthDay[i];
}
}
dayOfWeek = (goneYearDays + thisYearDays + 1) % 7;
Log.d(this.getClass().getName(), "从1990到现在有"
+ (goneYearDays + thisYearDays + 1) + "天");
Log.d(this.getClass().getName(), year + "年" + month + "月" + 1 + "日是星期"
+ dayOfWeek);
return dayOfWeek;
}
}
DateEntity.java:实体类,比较简单
package com.widget.mycalendar;
import java.io.Serializable;
/**
* @author daij
* @version 1.0 日历实体类,添加的参数在获取日历实体集合的时候设置
*/
public class DateEntity implements Serializable {
private static final long serialVersionUID = -6053739977785155088L;
/** 年 */
public int year;
/** 月 */
public int month;
/** 日 */
public int day;
/** 星期 */
public String weekDay;
/** 是否为当前日期 */
public boolean isNowDate;
/** 是否为本月日期 */
public boolean isSelfMonthDate;
}
MainActivity.java:主Activity,用于提供模拟数据和实现交互,代码如下:
package com.example.mycalendar;
import java.util.List;
import android.app.Activity;
import android.graphics.Color;
import android.graphics.Point;
import android.graphics.drawable.ColorDrawable;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageView;
import android.widget.TextView;
import com.widget.mycalendar.CalendarGridView;
import com.widget.mycalendar.CalendarGridViewAdapter;
import com.widget.mycalendar.CalendarTool;
import com.widget.mycalendar.DateEntity;
/**
* @author daij
* @version 1.0 日历:考勤记录
*/
public class MainActivity extends Activity {
private CalendarGridViewAdapter mAdapter;
private CalendarTool mCalendarTool;
private CalendarGridView mGridView;
private List<DateEntity> mDateEntityList;
private Point mNowCalendarPoint;
private ImageView mPrevioursIv;
private ImageView mNextIv;
private ImageView ivBack;
private TextView mCalendarTv;
private TextView tvDetail;
@Override
protected void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.activity_main);
super.onCreate(savedInstanceState);
initView();// 初始化View
setListeners();
// requestXmas();//请求数据
}
/** 初始化view */
public void initView() {
mPrevioursIv = (ImageView) findViewById(R.id.calendar_bar_iv_previours);
mNextIv = (ImageView) findViewById(R.id.calendar_bar_iv_next);
ivBack = (ImageView) findViewById(R.id.iv_back);
mCalendarTv = (TextView) findViewById(R.id.calendar_bar_tv_date);
tvDetail = (TextView) findViewById(R.id.tv_detail);
mGridView = (CalendarGridView) findViewById(R.id.calendar_gridview);
mGridView.setSelector(new ColorDrawable(Color.TRANSPARENT));
mGridView.setOnItemClickListener(new CalendarItemClickListener());
mPrevioursIv.setOnClickListener(new ImageViewClickListener());
mNextIv.setOnClickListener(new ImageViewClickListener());
mCalendarTool = new CalendarTool(this);
mNowCalendarPoint = mCalendarTool.getNowCalendar();
mCalendarTv.setText(mNowCalendarPoint.x + "年" + mNowCalendarPoint.y
+ "月");
mDateEntityList = mCalendarTool.getDateEntityList(mNowCalendarPoint.x,
mNowCalendarPoint.y);
mAdapter = new CalendarGridViewAdapter(this, getResources());
mAdapter.setDateList(mDateEntityList);
mGridView.setAdapter(mAdapter);
}
/** 日历监听类 */
class CalendarItemClickListener implements OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
// TODO 模拟数据
DateEntity itemDate = (DateEntity) view.getTag();
if (!((TextUtils.equals(CalendarTool.SATURDAY, itemDate.weekDay)) || TextUtils
.equals(CalendarTool.SUNDAY, itemDate.weekDay))) {// 非周末
if (((itemDate.year == 2015 && itemDate.month <= 8) || (itemDate.year < 2015 && itemDate.month <= 12))
&& itemDate.isSelfMonthDate) {// 2015.8以前,且日期在当月
if (itemDate.day > 0 && itemDate.day <= 20
|| itemDate.day == 25) {// 正常出勤
tvDetail.setText("备注:" + "\n" + " "
+ itemDate.year + "年" + itemDate.month + "月"
+ itemDate.day + "日" + "--" + itemDate.weekDay
+ "\n" + "正常出勤。");
} else if (itemDate.day == 21 || itemDate.day == 22) {// 请假
tvDetail.setText("备注:" + "\n" + " "
+ itemDate.year + "年" + itemDate.month + "月"
+ itemDate.day + "日" + "--" + itemDate.weekDay
+ "\n" + "请假两天,从" + itemDate.month + "月21日到"
+ itemDate.month + "月22日");
} else if (itemDate.day == 23 || itemDate.day == 24) {// 迟到、早退
if (itemDate.day == 23) {
tvDetail.setText("备注:" + "\n" + " "
+ itemDate.year + "年" + itemDate.month
+ "月" + itemDate.day + "日" + "--"
+ itemDate.weekDay + "\n"
+ "上午8:36打卡,下午5:40打卡" + "\n" + "上午迟到6分钟");
} else if (itemDate.day == 24) {
tvDetail.setText("备注:" + "\n" + " "
+ itemDate.year + "年" + itemDate.month
+ "月" + itemDate.day + "日" + "--"
+ itemDate.weekDay + "\n"
+ "上午8:25打卡,下午5:29打卡" + "\n" + "下午早退1分钟");
}
} else {
if (itemDate.month == 8 && itemDate.day > 25) {
return;
}
tvDetail.setText("备注:" + "\n" + " "
+ itemDate.year + "年" + itemDate.month + "月"
+ itemDate.day + "日" + "--" + itemDate.weekDay
+ "\n" + "正常出勤。");
}
}
}
// Toast.makeText(
// RecordCalendar.this,
// "选中的是" + itemDate.year + "年" + itemDate.month + "月"
// + itemDate.day + "日" + "--" + itemDate.weekDay,
// Toast.LENGTH_SHORT).show();
}
}
/** 按钮 */
class ImageViewClickListener implements OnClickListener {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.calendar_bar_iv_previours:// 上月
mDateEntityList.clear();
mNowCalendarPoint = mCalendarTool.getNowCalendar();
if (mNowCalendarPoint.x >= 1990 && mNowCalendarPoint.x < 2038) {
if (mNowCalendarPoint.y - 1 <= 0) {
mDateEntityList = mCalendarTool.getDateEntityList(
mNowCalendarPoint.x - 1, 12);
} else {
mDateEntityList = mCalendarTool.getDateEntityList(
mNowCalendarPoint.x, mNowCalendarPoint.y - 1);
}
mAdapter.setDateList(mDateEntityList);
mAdapter.notifyDataSetChanged();
mNowCalendarPoint = mCalendarTool.getNowCalendar();
mCalendarTv.setText(mNowCalendarPoint.x + "年"
+ mNowCalendarPoint.y + "月");
}
break;
case R.id.calendar_bar_iv_next:// 下月
mNowCalendarPoint = mCalendarTool.getNowCalendar();
mDateEntityList.clear();
if (mNowCalendarPoint.x >= 1990 && mNowCalendarPoint.x < 2038) {
if (mNowCalendarPoint.y + 1 > 12) {
mDateEntityList = mCalendarTool.getDateEntityList(
mNowCalendarPoint.x + 1, 1);
} else {
mDateEntityList = mCalendarTool.getDateEntityList(
mNowCalendarPoint.x, mNowCalendarPoint.y + 1);
}
mAdapter.setDateList(mDateEntityList);
mAdapter.notifyDataSetChanged();
mNowCalendarPoint = mCalendarTool.getNowCalendar();
mCalendarTv.setText(mNowCalendarPoint.x + "年"
+ mNowCalendarPoint.y + "月");
}
break;
}
}
}
private void setListeners() {
ivBack.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
MainActivity.this.finish();
}
});
}
@Override
public void onDestroy() {
super.onDestroy();
}
}
模拟数据说明:在2015年8月25日(包含这天)前均有打卡记录,模拟每月21、22号请假,23、24号迟到或早退,其他工作日正常出勤。模拟数据仅作展示效果之用。
代码是最好的语言,再加上详细的注释,相信有一定Java编程基础和Android应用开发经验的人都能看懂。因为需要自己按照项目去扩展,本文只提供解决思路,希望读者不要懒惰,只有读懂本文的代码逻辑才能扩展出你所需的代码。
其他布局和图片样式等资源文件均在项目内可获取,附上源码地址:http://download.csdn.net/detail/daijin888888/9020535
下载需要资源分1分,整理不容易,还望理解。
请尊重原创,转载请附上原文地址,谢谢!
原文地址:http://blog.csdn.net/daijin888888/article/details/47752723
版权声明:本文为博主原创文章,未经博主允许不得转载。
Android自定义组件之日历控件-精美日历实现(内容、样式可扩展)
原文地址:http://blog.csdn.net/daijin888888/article/details/47752723