allprojects {
repositories {
    ...
    maven { url 'https://jitpack.io' }
  }
   }

dependencies {
    implementation 'com.github.atuan07:CustomHotelCalender:V1.0.2'
  }

private int startGroup = -1;//全局量
private int endGroup = -1;
private int startChild = -1;
private int endChild = -1;
  ...
     new DatePopupWindow
      .Builder(MainActivity.this, Calendar.getInstance().getTime(), view)//初始化
      .setInitSelect(startGroup, startChild, endGroup, endChild)//設(shè)置上一次選中的區(qū)間狀態(tài)
      .setInitDay(false)//默認(rèn)為true，UI內(nèi)容為共幾天、開(kāi)始、結(jié)束；當(dāng)為false時(shí),UI內(nèi)容為共幾晚、入住、離開(kāi)
      .setDateOnClickListener(new DatePopupWindow.DateOnClickListener() {//設(shè)置監(jiān)聽(tīng)
        //點(diǎn)擊完成按鈕后回調(diào)返回方法
        @Override
        public void getDate(String startDate, String endDate, int startGroupPosition, int 
                  startChildPosition, int endGroupPosition, int endChildPosition) {
          startGroup = startGroupPosition;//開(kāi)始月份位置
          startChild = startChildPosition;//開(kāi)始對(duì)應(yīng)月份中日的位置
          endGroup = endGroupPosition;//結(jié)束月份位置
          endChild = endChildPosition;//結(jié)束對(duì)應(yīng)月份中日的位置
          String mStartTime = CalendarUtil.FormatDateYMD(startDate);
          String mEndTime = CalendarUtil.FormatDateYMD(endDate);
          result.setText("您選擇了：" + mStartTime + "到" + mEndTime);
        }
      }).builder();