时间过的好快,一转眼2019年马上就结束了,在年末最后一天,写一篇与时间有关的文章吧,今天做一个日期区间的选择功能,效果类似一些酒店入住的日期选择,我写的这个类似12306上面的酒店入住日期选择效果,像一些其他APP如美团、携程等酒店入住日期选择效果也大同小异。先看一下效果图吧。
此功能中的日历是使用RecyclerView+GridLayoutManager来实现的,日历中的日期数据是通过Calendar日历获取的(不用自己再单独计算是平年闰年和每个月多少天了),因为RecyclerView的GridLayoutManager可以实现网格布局的效果。我们看到日历的头部有周日到周一,一行显示7天的日期数据;滑动日历列表开始的年月,下面是对应月份的具体日期。我们需要做的处理是:
(1)如果显示年月,则通过GridLayoutManagere来控制一行展示1个Item,如果显示月份的具体日期,则通过GridLayoutManagere来控制一行展示7个Item;
GridLayoutManager gridLayoutManager = new GridLayoutManager(context, 7);
gridLayoutManager.setOrientation(GridLayoutManager.VERTICAL);
gridLayoutManager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
@Override
public int getSpanSize(int i) {
//这个方法返回的是当前位置的 item 跨度大小
if (DateBean.item_type_month == data.get(i).getItemType()) {
return 7;
} else {
return 1;
}
}
});
recyclerView.setLayoutManager(gridLayoutManager);
(2)处理每个月的月初:每个月从1号开始到月末31号(先拿一个月31天举例),1号如果是周日则将其绘制在第一行的第一个位置;如果是周一,则绘制在第一行的第二个位置,第一个位置的item补空占位,以此类推,如果是周六,则绘制在第一行的最后一个位置,前面留个位置都补空占位;
(3)处理每个月的月末:如果这个月的最后一天的周日,则后面六天都补空占位,如果这个月的最后一天是周六,则正好显示不用补空;
(4)依次类推,处理完一个月的开始日期结束日期,中间的日期照常生成即可,无需特殊处理,最终将数据存储在数组里即可。
//生成日历数据
// private List<DateBean> days(String startDateStr, String endDateStr)
private List<DateBean> days(int monthLength){
List<DateBean> dateBeanList = new ArrayList<>();
try {
Calendar calendar = Calendar.getInstance();
//日期格式化
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
SimpleDateFormat formatYYYYMM = new SimpleDateFormat("yyyy-MM");
//=============================== start 动态设置从本月开始 和时间长度(显示多少个月)======================================//
//起始日期
Date startDate = new Date();
calendar.setTime(startDate);
//结束日期
calendar.add(Calendar.MONTH, monthLength);//月份是从0开始的 增加6个月 日历显示7个月的长度
Date endDate = new Date(calendar.getTimeInMillis());//方法返回此Calendar以毫秒为单位的时间
Log.e("tag", "startDate:" + format.format(startDate) + "----------endDate:" + format.format(endDate));
//格式化开始日期和结束日期为 yyyy-mm-dd格式
String endDateStr = format.format(endDate);//把date转成String
endDate = format.parse(endDateStr);//把String转成date
String startDateStr = format.format(startDate);
startDate = format.parse(startDateStr);
//================================= end ====================================//
//--------------------------------- start 动态传值方式设置显示的日历日期区间----------------------------------------//
//起始日期
// Date startDate = format.parse(startDateStr);//把String转成date
// //结束日期
// Date endDate = format.parse(endDateStr);//把String转成date
//---------------------------------- end ---------------------------------------//
calendar.setTime(startDate);//上面的calendar.setTime(startDate)是设置了当前时间,但是后面calendar.add(Calendar.MONTH, 5)结束日期加了5个月,日期就延后了5个月,所以要得到当前日期,需要在此处再设置一次
Log.e("tag", "startDateStr:" + startDateStr + "---------endDate:" + format.format(endDate));
calendar.set(Calendar.DAY_OF_MONTH, 1);//设置日期为1
Calendar monthCalendar = Calendar.getInstance();
//按月生成日历 每行7个 最多6行 42个
//每一行有七个日期 日 一 二 三 四 五 六 的顺序
Log.e("tag","calendar.getTimeInMillis()="+calendar.getTimeInMillis()+"----------endDate.getTime()="+endDate.getTime());
for (calendar.getTimeInMillis(); calendar.getTimeInMillis() <= endDate.getTime();){//从当前时间开始,如果小于等于最后的时间,则增加一个月
//月份item
DateBean monthDateBean = new DateBean();
monthDateBean.setDate(calendar.getTime());
monthDateBean.setMonthStr(formatYYYYMM.format(monthDateBean.getDate()));
monthDateBean.setItemType(DateBean.getItem_type_month());
dateBeanList.add(monthDateBean);
//获取一个月结束的日期和开始日期
monthCalendar.setTime(calendar.getTime());
monthCalendar.set(Calendar.DAY_OF_MONTH, 1);
Date startMonthDay = calendar.getTime();
monthCalendar.add(Calendar.MONTH, 1);//表示加一个月
monthCalendar.add(Calendar.DAY_OF_MONTH, -1);//表示对日期进行减一天操作
//从而得到当前月的最后一天
Date endMonthDay = monthCalendar.getTime();
//重置为本月开始
monthCalendar.set(Calendar.DAY_OF_MONTH, 1);
Log.e("tag", "月份的开始日期:" + format.format(startMonthDay) + "——星期"+getWeekStr(calendar.get(Calendar.DAY_OF_WEEK)+"")+ "---------结束日期:" + format.format(endMonthDay));
//从月的第一天开始,如果小于等于本月最后一天,则增加一天
for(monthCalendar.getTimeInMillis();monthCalendar.getTimeInMillis() <= endMonthDay.getTime();){
//生成单个月的日历
//处理一个月开始的第一天
if (monthCalendar.get(Calendar.DAY_OF_MONTH) == 1){
//看某个月第一天是周几
int weekDay = monthCalendar.get(Calendar.DAY_OF_WEEK);
Log.e("tag","dateBeanList="+dateBeanList.size());
Log.e("tag","monthDateBean.getMonthStr()="+monthDateBean.getMonthStr());
switch (weekDay){
case 1://周日 正常顶格显示
break;
case 2://周一 错后一格显示
addDatePlaceholder(dateBeanList, 1, monthDateBean.getMonthStr());
break;
case 3://周二 错后二格显示
addDatePlaceholder(dateBeanList, 2, monthDateBean.getMonthStr());
break;
case 4://周三 错后三格显示
addDatePlaceholder(dateBeanList, 3, monthDateBean.getMonthStr());
break;
case 5://周四 错后四格显示
addDatePlaceholder(dateBeanList, 4, monthDateBean.getMonthStr());
break;
case 6://周五 错后五格显示
addDatePlaceholder(dateBeanList, 5, monthDateBean.getMonthStr());
break;
case 7://周六 错后六格显示
addDatePlaceholder(dateBeanList, 6, monthDateBean.getMonthStr());
break;
}
}
//生成某一天日期实体 日item
DateBean dayDateBean = new DateBean();
dayDateBean.setDate(monthCalendar.getTime());
dayDateBean.setMonthStr(monthDateBean.getMonthStr());
dayDateBean.setDay(monthCalendar.get(Calendar.DAY_OF_MONTH) + "");
dateBeanList.add(dayDateBean);
//处理一个月的最后一天
if (monthCalendar.getTimeInMillis() == endMonthDay.getTime()){
//看某个月最后一天是周几
int weekDay = monthCalendar.get(Calendar.DAY_OF_WEEK);
switch (weekDay){
case 1://周日 添加6个空的日期占位
addDatePlaceholder(dateBeanList, 6, monthDateBean.getMonthStr());
break;
case 2://周一 添加5个空的日期占位
addDatePlaceholder(dateBeanList, 5, monthDateBean.getMonthStr());
break;
case 3://周二 添加4个空的日期占位
addDatePlaceholder(dateBeanList, 4, monthDateBean.getMonthStr());
break;
case 4://周三 添加3个空的日期占位
addDatePlaceholder(dateBeanList, 3, monthDateBean.getMonthStr());
break;
case 5://周四 添加2个空的日期占位
addDatePlaceholder(dateBeanList, 2, monthDateBean.getMonthStr());
break;
case 6://周五 添加1个空的日期占位
addDatePlaceholder(dateBeanList, 1, monthDateBean.getMonthStr());
break;
case 7://周六
break;
}
}
//天数加1
monthCalendar.add(Calendar.DAY_OF_MONTH, 1);
}
Log.e("tag", "日期:" + format.format(calendar.getTime()) + "----周" + getWeekStr(calendar.get(Calendar.DAY_OF_WEEK) + ""));
//月份加1
calendar.add(Calendar.MONTH, 1);
}
} catch (ParseException e) {
e.printStackTrace();
}
return dateBeanList;
}
//添加空的日期占位
private void addDatePlaceholder(List<DateBean> dateBeans, int count, String monthStr) {
for (int i = 0; i < count; i++) {
DateBean dateBean = new DateBean();
dateBean.setMonthStr(monthStr);
dateBeans.add(dateBean);
}
}
//获取星期几
private String getWeekStr(String mWay) {
if ("1".equals(mWay)) {
mWay = "日";
} else if ("2".equals(mWay)) {
mWay = "一";
} else if ("3".equals(mWay)) {
mWay = "二";
} else if ("4".equals(mWay)) {
mWay = "三";
} else if ("5".equals(mWay)) {
mWay = "四";
} else if ("6".equals(mWay)) {
mWay = "五";
} else if ("7".equals(mWay)) {
mWay = "六";
}
return mWay;
}
在生成日历的时候还有一点需要注意下,就是今天之前的日期是不可选的,置灰 ,今天的日期以特殊样式标记出来,方便一眼就看到今天。这个要在adapter的item上设置
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Date todayDate = new Date();
String todayStr = format.format(todayDate);//获取今天日期
String date = data.get(position).getMonthStr()+"-"+data.get(position).getDay();//获取得到的日期
Date beforeToday = new Date();
try {
beforeToday = format.parse(date);
} catch (ParseException e) {
e.printStackTrace();
}
if (date.equals(todayStr)){
//如果是今天的日期 则把显示的日期号改为“今天”两个字
viewHolder.tv_day.setText("今天");
viewHolder.tv_day.setTextColor(Color.parseColor("#2196F3"));
} else if (beforeToday.getTime() < todayDate.getTime()){
//今天之前的日期 设置成灰色
viewHolder.tv_day.setText(data.get(position).getDay());
viewHolder.tv_day.setTextColor(Color.parseColor("#dadada"));
} else {
viewHolder.tv_day.setText(data.get(position).getDay());
viewHolder.tv_day.setTextColor(Color.BLACK);
}
DateBean dateBean = data.get(position);
//设置item状态
if (dateBean.getItemState() == DateBean.ITEM_STATE_BEGIN_DATE || dateBean.getItemState() == DateBean.ITEM_STATE_END_DATE){
//开始日期或结束日期
viewHolder.itemView.setBackgroundColor(context.getResources().getColor(R.color.blue));
viewHolder.tv_day.setTextColor(Color.WHITE);
viewHolder.tv_check_in_check_out.setVisibility(VISIBLE);
if (dateBean.getItemState() == DateBean.ITEM_STATE_BEGIN_DATE){
viewHolder.tv_check_in_check_out.setText("开始");
}else {
viewHolder.tv_check_in_check_out.setText("结束");
}
}else if (dateBean.getItemState() == DateBean.ITEM_STATE_SELECTED){
//选中状态
viewHolder.itemView.setBackgroundColor(context.getResources().getColor(R.color.blue1));
viewHolder.tv_day.setTextColor(Color.WHITE);
}else {
//正常状态
viewHolder.itemView.setBackgroundColor(Color.WHITE);
viewHolder.tv_check_in_check_out.setVisibility(GONE);
}
选择日期时需要判断,今天之前的如期不可选
adapter.setOnRecyclerviewItemClick(new CalendarAdapter.OnRecyclerviewItemClick() {
@Override
public void onItemClick(View v, int position) {
Date todayDate = new Date();//今天
String date = data.get(position).getMonthStr()+"-"+data.get(position).getDay();//获取得到的日期
Date beforeToday = new Date();
try {
beforeToday = simpleDateFormat.parse(date);
} catch (ParseException e) {
e.printStackTrace();
}
if (beforeToday.getTime() < todayDate.getTime()-1000*60*60*24){//-1000*60*60*24 得到的是昨天的时间 不然今天也不可选
//今天之前的日期不可选
Toast.makeText(context,"当前日期不可选",Toast.LENGTH_SHORT).show();
}else {
onClick(data.get(position));
}
Log.e("tag","date="+date);
}
});
对日期的选中与否做处理,如果没有选中开始日期则此次操作选中开始日期;如果选中了开始日期但没有选中结束日期,本次操作选中结束日期;如果结束日期和开始日期都已选中,则重新选择开始日期。具体细节下面代码里都有注释。
private void onClick(DateBean dateBean){
if (dateBean.getItemType() == DateBean.item_type_month || TextUtils.isEmpty(dateBean.getDay())) {
return;
}
//这个是在Dialog显示的情况下会用到,来判断如期是否已选完,来改变Dialog里面确定按钮的选中状态
if(onDateSelected!=null){
onDateSelected.hasSelect(false);
}
//如果没有选中开始日期则此次操作选中开始日期
if (startDate == null){
startDate = dateBean;
dateBean.setItemState(DateBean.ITEM_STATE_BEGIN_DATE);
}else if (endDate == null){
//如果选中了开始日期但没有选中结束日期,本次操作选中结束日期
//如果当前点击的结束日期跟开始日期一致 则不做操作
if (startDate == dateBean){
}else if (dateBean.getDate().getTime() < startDate.getDate().getTime()){
//如果当前点选的日期小于当前选中的开始日期,则本次操作重新选中开始日期
startDate.setItemState(DateBean.ITEM_STATE_NORMAL);
startDate = dateBean;
startDate.setItemState(DateBean.ITEM_STATE_BEGIN_DATE);
}else {
//当前点选的日期大于当前选中的开始日期 此次操作选中结束日期
endDate = dateBean;
endDate.setItemState(DateBean.ITEM_STATE_END_DATE);
setState();//选中中间的日期
if(onDateSelected!=null){
onDateSelected.hasSelect(true);
onDateSelected.selected(simpleDateFormat.format(startDate.getDate()),simpleDateFormat.format(endDate.getDate()));
}
}
}else if (startDate != null && endDate != null){
//结束日期和开始日期都已选中
clearState();//取消选中状态
/**
* 一定要先清除结束日期,再重新选择开始日期,不然会有一个bug,当开始日期和结束日期都选中的时候,如果此次点选开始日期,则选中开始日期,
* 如果点结束日期,则全都清除了,再点结束日期没有反应,应该是结束日期变为开始日期才对
* 因此要先清除结束位置,再重新选中开始日期
*/
//一定要先清除结束日期,再重新选择开始日期
endDate.setItemState(DateBean.ITEM_STATE_NORMAL);
endDate = null;
startDate.setItemState(DateBean.ITEM_STATE_NORMAL);
startDate = dateBean;
startDate.setItemState(DateBean.ITEM_STATE_BEGIN_DATE);
}
adapter.notifyDataSetChanged();
}
//选中中间的日期
private void setState(){
if (endDate != null && startDate != null){
int start = data.indexOf(startDate);
start += 1;
int end = data.indexOf(endDate);
for (; start < end; start++){
DateBean dateBean = data.get(start);
if (!TextUtils.isEmpty(dateBean.getDay())) {
dateBean.setItemState(DateBean.ITEM_STATE_SELECTED);
}
}
}
}
//取消选中状态
private void clearState(){
if (endDate != null && startDate != null){
int start = data.indexOf(startDate);
start += 1;
int end = data.indexOf(endDate);
for (; start < end; start++){
DateBean dateBean = data.get(start);
dateBean.setItemState(DateBean.ITEM_STATE_NORMAL);
}
}
}
RecyclerView对应的adapter
/**
* Created by wjy.
* Date: 2019/12/26
* Time: 11:57
* Describe: 日历adapter
*/
public class CalendarAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private Context context;
public ArrayList<DateBean> data = new ArrayList<>();
private OnRecyclerviewItemClick onRecyclerviewItemClick;
public OnRecyclerviewItemClick getOnRecyclerviewItemClick() {
return onRecyclerviewItemClick;
}
public void setOnRecyclerviewItemClick(OnRecyclerviewItemClick onRecyclerviewItemClick) {
this.onRecyclerviewItemClick = onRecyclerviewItemClick;
}
public CalendarAdapter(Context context,ArrayList<DateBean> data){
this.context = context;
this.data = data;
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
if (viewType == DateBean.item_type_day){
final View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_day,parent,false);
final DayViewHolder dayViewHolder = new DayViewHolder(view);
dayViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (onRecyclerviewItemClick != null){
onRecyclerviewItemClick.onItemClick(v,dayViewHolder.getLayoutPosition());
}
}
});
return dayViewHolder;
}else if (viewType == DateBean.item_type_month){
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_month,parent,false);
final MonthViewHolder monthViewHolder = new MonthViewHolder(view);
monthViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (onRecyclerviewItemClick != null){
onRecyclerviewItemClick.onItemClick(v,monthViewHolder.getLayoutPosition());
}
}
});
return monthViewHolder;
}
return null;
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
if (holder instanceof MonthViewHolder){
MonthViewHolder viewHolder = (MonthViewHolder) holder;
viewHolder.tv_month.setText(data.get(position).getMonthStr());
}else {
DayViewHolder viewHolder = (DayViewHolder) holder;
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
Date todayDate = new Date();
String todayStr = format.format(todayDate);//获取今天日期
String date = data.get(position).getMonthStr()+"-"+data.get(position).getDay();//获取得到的日期
Date beforeToday = new Date();
try {
beforeToday = format.parse(date);
} catch (ParseException e) {
e.printStackTrace();
}
if (date.equals(todayStr)){
//如果是今天的日期 则把显示的日期号改为“今天”两个字
viewHolder.tv_day.setText("今天");
viewHolder.tv_day.setTextColor(Color.parseColor("#2196F3"));
} else if (beforeToday.getTime() < todayDate.getTime()){
//今天之前的日期 设置成灰色
viewHolder.tv_day.setText(data.get(position).getDay());
viewHolder.tv_day.setTextColor(Color.parseColor("#dadada"));
} else {
viewHolder.tv_day.setText(data.get(position).getDay());
viewHolder.tv_day.setTextColor(Color.BLACK);
}
DateBean dateBean = data.get(position);
//设置item状态
if (dateBean.getItemState() == DateBean.ITEM_STATE_BEGIN_DATE || dateBean.getItemState() == DateBean.ITEM_STATE_END_DATE){
//开始日期或结束日期
viewHolder.itemView.setBackgroundColor(context.getResources().getColor(R.color.blue));
viewHolder.tv_day.setTextColor(Color.WHITE);
viewHolder.tv_check_in_check_out.setVisibility(VISIBLE);
if (dateBean.getItemState() == DateBean.ITEM_STATE_BEGIN_DATE){
viewHolder.tv_check_in_check_out.setText("开始");
}else {
viewHolder.tv_check_in_check_out.setText("结束");
}
}else if (dateBean.getItemState() == DateBean.ITEM_STATE_SELECTED){
//选中状态
viewHolder.itemView.setBackgroundColor(context.getResources().getColor(R.color.blue1));
viewHolder.tv_day.setTextColor(Color.WHITE);
}else {
//正常状态
viewHolder.itemView.setBackgroundColor(Color.WHITE);
viewHolder.tv_check_in_check_out.setVisibility(GONE);
}
}
}
@Override
public int getItemCount() {
return data.size();
}
@Override
public int getItemViewType(int position) {
return data.get(position).getItemType();
}
public class DayViewHolder extends RecyclerView.ViewHolder {
public TextView tv_day;
public TextView tv_check_in_check_out;
public DayViewHolder(@NonNull View itemView) {
super(itemView);
tv_day = itemView.findViewById(R.id.tv_day);
tv_check_in_check_out = itemView.findViewById(R.id.tv_check_in_check_out);
}
}
public class MonthViewHolder extends RecyclerView.ViewHolder {
public TextView tv_month;
public MonthViewHolder(@NonNull View itemView) {
super(itemView);
tv_month = itemView.findViewById(R.id.tv_month);
}
}
public interface OnRecyclerviewItemClick {
void onItemClick(View v, int position);
}
}
以Dialog弹窗形式显示,需要自定义一个CalendarDialog,并将Dialog设置以全屏形式显示
/**
* Created by wjy.
* Date: 2019/12/30
* Time: 12:06
* Describe: Dialog弹窗显示日历
*/
public class CalendarDialog extends Dialog {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
ImageView img_close;
Button btn_ok;
MyCalendarList calendarList;
private OnDialogCalendarListener calendarListener;
private String startDates,endDates;
public static DisplayMetrics metrics;
public static int screenWidth;//屏幕宽
public static int screenHeigh;//屏幕高
public CalendarDialog(@NonNull Context context) {
super(context,R.style.CalendarDialog);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// setContentView(R.layout.calendarpopupwindow);
LayoutInflater inflater = LayoutInflater.from(getContext());
View viewDialog = inflater.inflate(R.layout.calendarpopupwindow, null);
metrics = getContext().getResources().getDisplayMetrics();
screenWidth = metrics.widthPixels;//屏幕宽
screenHeigh = metrics.heightPixels;//屏幕高
//设置dialog的宽高为屏幕的宽高
ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(screenWidth, screenHeigh-100);
setContentView(viewDialog, layoutParams);
initView();
}
@Override
public void show() {
super.show();
}
private void initView(){
img_close = findViewById(R.id.img_close);
img_close.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dismiss();
}
});
calendarList = findViewById(R.id.calendarList);
calendarList.setOnDateSelected(new MyCalendarList.OnDateSelected() {
@Override
public void selected(String startDate, String endDate) {
startDates = startDate;
endDates = endDate;
try {
Date sDate = format.parse(startDate);
Date eDate = format.parse(endDate);
Toast.makeText(getContext(),"共"+ CommonTools.getDayCount(sDate,eDate) +"晚",Toast.LENGTH_LONG).show();
} catch (ParseException e) {
e.printStackTrace();
}
}
@Override
public void hasSelect(boolean select) {
if (select){
btn_ok.setSelected(true);
}else {
btn_ok.setSelected(false);
}
}
});
btn_ok = findViewById(R.id.btn_ok);
btn_ok.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (calendarListener != null){
calendarListener.OnDialogCalendarListener(startDates,endDates);
dismiss();
}
}
});
}
public interface OnDialogCalendarListener{
void OnDialogCalendarListener(String startDate, String endDate);
}
public void setOnDialogCalendarListener(OnDialogCalendarListener calendarListener) {
this.calendarListener = calendarListener;
}
}
Dialog的style在res->values->styles.xml文件里创建
<style name="CalendarDialog" parent="android:style/Theme.Dialog">
<!--背景颜色及和透明程度-->
<item name="android:windowBackground">@android:color/transparent</item>
<!--是否去除标题 -->
<item name="android:windowNoTitle">true</item>
<!--是否去除边框-->
<item name="android:windowFrame">@null</item>
<!--是否浮现在activity之上-->
<item name="android:windowIsFloating">true</item>
<!--是否模糊-->
<item name="android:backgroundDimEnabled">true</item>
</style>
CalendarDialog的布局文件calendarpopupwindow.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_marginBottom="60dp"
android:background="@color/transparent"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="40dp"
android:background="@drawable/bg_gray_top_corner">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="选择日期"
android:textSize="15sp"
android:textColor="@color/black"/>
<ImageView
android:id="@+id/img_close"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginRight="15dp"
android:src="@mipmap/com_btn_guanbibutton_press_01"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"/>
</RelativeLayout>
<com.junto.text.Calendar.MyCalendarList
android:id="@+id/calendarList"
android:layout_width="match_parent"
android:layout_height="450dp"
android:background="@color/white">
</com.junto.text.Calendar.MyCalendarList>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:padding="10dp"
android:background="@color/white">
<Button
android:id="@+id/btn_ok"
android:layout_width="match_parent"
android:layout_height="40dp"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:background="@drawable/btn_ok"
android:text="完成"
android:textColor="@color/white"
android:textSize="15sp"/>
</RelativeLayout>
</RelativeLayout>
在Activity类里面使用
/**
* Created by wjy.
* Date: 2019/12/26
* Time: 10:21
* Describe: 类似美团携程选择酒店入住日期和离店日期的日历效果
*/
public class CalendarActivity extends Activity implements CalendarPopupWindow.CalendarListener {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
MyCalendarList calendarList;
TextView tv_selectDate;
CalendarPopupWindow calendarPopupWindow;
CalendarDialog calendarDialog;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_calendar);
calendarDialog = new CalendarDialog(CalendarActivity.this);
initView();
}
private void initView(){
calendarPopupWindow = new CalendarPopupWindow(CalendarActivity.this);
calendarPopupWindow.setCalendarListener(this);
tv_selectDate = findViewById(R.id.tv_selectDate);
tv_selectDate.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//以Dialog弹窗形式显示
calendarDialog.getWindow().setGravity(Gravity.BOTTOM);
calendarDialog.getWindow().setWindowAnimations(R.style.mystyle);
calendarDialog.show();
//以PopupWindow弹窗形式显示
// calendarPopupWindow.showAtLocation(CalendarActivity.this.findViewById(R.id.ll_parent), Gravity.BOTTOM,0,0);
// calendarPopupWindow.setAnimationStyle(R.style.mystyle );
}
});
calendarDialog.setOnDialogCalendarListener(new CalendarDialog.OnDialogCalendarListener() {
@Override
public void OnDialogCalendarListener(String startDate, String endDate) {
Log.e("tag","OnDialogCalendarListener startDate="+startDate);
Log.e("tag","OnDialogCalendarListener endDate="+endDate);
}
});
calendarList = findViewById(R.id.calendarList);
calendarList.setOnDateSelected(new MyCalendarList.OnDateSelected() {
@Override
public void selected(String startDate, String endDate) {
Toast.makeText(CalendarActivity.this,"开始日期:"+startDate+"\n结束日期:"+endDate,Toast.LENGTH_LONG).show();
try {
Date sDate = format.parse(startDate);
Date eDate = format.parse(endDate);
tv_selectDate.setText(CommonTools.getDateForStandard(startDate).substring(5)+" "+CommonTools.DateToWeek(sDate)+"——"
+CommonTools.getDateForStandard(endDate).substring(5)+" "+CommonTools.DateToWeek(eDate)+" 共"+ CommonTools.getDayCount(sDate,eDate) +"晚");
} catch (ParseException e) {
e.printStackTrace();
}
}
@Override
public void hasSelect(boolean select) {
}
});
}
@Override
public void onCalendarListenerResult(String startDate, String endDate) {
Log.e("tag","onCalendarListenerResult startDate="+startDate);
Log.e("tag","onCalendarListenerResult endDate="+endDate);
}
}
设置弹窗显示位置,并且给Dialog的弹出与关闭设置了滑动动画效果
//以Dialog弹窗形式显示
calendarDialog.getWindow().setGravity(Gravity.BOTTOM);
calendarDialog.getWindow().setWindowAnimations(R.style.mystyle);
calendarDialog.show();
动画的style在res->values->styles.xml文件里创建
<!-- 进出场动画都用到的anim style-->
<style name="mystyle" parent="android:Animation">
<!--进入时的动画-->
<item name="android:windowEnterAnimation">@anim/calendarpopupwindow_enter</item>
<!--退出时的动画-->
<item name="android:windowExitAnimation">@anim/calendarpopupwindow_exit</item>
</style>
进入退出的动画文件:在res下新建anim文件夹,在里面创建进入时动画文件calendarpopupwindow_enter.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:duration="600"
android:fromYDelta="100%p" />
</set>
退出时动画文件calendarpopupwindow_exit.xml
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<translate
android:duration="600"
android:toYDelta="100%p" />
</set>
此功能里还用到一个实体类DateBean,记录item类型,item状态等
public class DateBean {
//item类型
public static int item_type_day = 1;//日期item
public static int item_type_month = 2;//月份item
int itemType = 1;//默认是日期item
//item状态
public static int ITEM_STATE_BEGIN_DATE = 1;//开始日期
public static int ITEM_STATE_END_DATE = 2;//结束日期
public static int ITEM_STATE_SELECTED = 3;//选中状态
public static int ITEM_STATE_NORMAL = 4;//正常状态
public int itemState = ITEM_STATE_NORMAL;
Date date;//具体日期
String day;//一个月的某天
String monthStr;//月份
public static int getItem_type_day() {
return item_type_day;
}
public static void setItem_type_day(int item_type_day) {
DateBean.item_type_day = item_type_day;
}
public static int getItem_type_month() {
return item_type_month;
}
public static void setItem_type_month(int item_type_month) {
DateBean.item_type_month = item_type_month;
}
public int getItemType() {
return itemType;
}
public void setItemType(int itemType) {
this.itemType = itemType;
}
public int getItemState() {
return itemState;
}
public void setItemState(int itemState) {
this.itemState = itemState;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
public String getDay() {
return day;
}
public void setDay(String day) {
this.day = day;
}
public String getMonthStr() {
return monthStr;
}
public void setMonthStr(String monthStr) {
this.monthStr = monthStr;
}
}
到此日期区间选择就完成了。下面再添加一个效果:实现月份标题悬停的效果
我们仔细看效果图可以发现,月份标题是有一个悬停和慢慢推走的效果的。这个效果可以用ItemDecoration装饰来实现。具体实现是继承ItemDecoration 重写OnDrawOver方法在这个方法要做这么几件事
绘制出当前月份标题
如何获取当前要绘制的月份标题是几月份呢?我们RecyclerView的adapter中的数据源DataBean每个日期item都存储了他对应的日期标题,这个日期对应的月份,可以通过 RecyclerView的getAdapter()方法获取Adapter然后通过RecyclerView 的getChildAdapterPosition(fistView)来获取某个itemView在adapter对应的位置 然后从Adapter的数据源中获取每个item的对应的月份。
如何实现月份标题推走的效果
逻辑是首先找出当前所有可见的Item的第一个月份标题类型的Item这个Item是当我们滑动列表时下一个悬停的月份标题。然后我们获取这个Item距离顶部的距离view.getTop()当它距离顶部的距离小于等于我们月份标题的高度时,假如标题的高度是150,我们绘制顶部的月份标题顶部的位置就是 150-view.getTop()这样随着位置的推移就会有一个慢慢推走的效果。代码如下
/**
* Created by wjy.
* Date: 2019/12/31
* Time: 12:02
* Describe: 实现月份标题悬停的效果
*/
public class MyItemDecoration extends RecyclerView.ItemDecoration {
Paint paint=new Paint();
Paint colorPaint=new Paint();
Paint linePaint=new Paint();
public MyItemDecoration(){
paint.setColor(Color.parseColor("#ffffff"));
paint.setStyle(Paint.Style.FILL);
colorPaint.setColor(Color.parseColor("#2196F3"));
colorPaint.setAntiAlias(true);
linePaint.setAntiAlias(true);
linePaint.setColor(Color.parseColor("#dddddd"));
}
@Override
public void onDrawOver(@NonNull Canvas c, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
super.onDrawOver(c, parent, state);
if(parent.getChildCount()<=0){
return;
}
//头部的高度
int height=50;
final float scale = parent.getContext().getResources().getDisplayMetrics().density;
height= (int) (height*scale+0.5f);
//获取第一个可见的view,通过此view获取其对应的月份
CalendarAdapter adapter=(CalendarAdapter) parent.getAdapter();
View fistView=parent.getChildAt(0);
String text=adapter.data.get(parent.getChildAdapterPosition(fistView)).getMonthStr();
String fistMonthStr="";
int fistViewTop=0;
//查找当前可见的itemView中第一个月份类型的item
for(int i=0;i<parent.getChildCount();i++){
View v=parent.getChildAt(i);
if(2==parent.getChildViewHolder(v).getItemViewType()){
fistMonthStr=adapter.data.get(parent.getChildAdapterPosition(v)).getMonthStr();
fistViewTop=v.getTop();
break;
}
}
//计算偏移量
int topOffset=0;
if(!fistMonthStr.equals(text)&&fistViewTop<height){
//前提是第一个可见的月份item不是当前显示的月份和距离的顶部的距离小于头部的高度
topOffset=height-fistViewTop;
}
int t=0-topOffset;
//绘制头部区域
c.drawRect(parent.getLeft(),t,parent.getRight(),t+height,paint);
colorPaint.setTextAlign(Paint.Align.CENTER);
colorPaint.setTextSize(15*scale+0.5f);
//绘制头部月份文字
c.drawText(text,parent.getRight()/2,(t+height)/2,colorPaint);
//绘制分割线
// if(fistViewTop!=height) {
// linePaint.setStrokeWidth(scale * 0.5f + 0.5f);
// c.drawLine(parent.getLeft(), t + height, parent.getRight(), t + height, linePaint);
// }
}
}
设置到recyclerView里
//实现月份标题悬停的效果
MyItemDecoration myItemDecoration = new MyItemDecoration();
recyclerView.addItemDecoration(myItemDecoration);
感谢 参考文章:https://blog.csdn.net/qifengdeqingchen/article/details/85233379
CSDN地址:https://download.csdn.net/download/u013184970/12068611