xml代码:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="@color/color_white"
    android:orientation="vertical"
    android:paddingHorizontal="@dimen/dimens_16dp"
    android:paddingTop="@dimen/dimens_16dp">

    <CalendarView
        android:id="@+id/calendarView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>
        <TextView
            android:id="@+id/tv_confirm"
            android:layout_width="match_parent"
            android:layout_height="@dimen/dimens_44dp"
            android:layout_marginHorizontal="@dimen/dimens_16dp"
            android:background="@drawable/bg_radius8_0f41a6"
            android:gravity="center"
            android:text="@string/limit_time_define"
            android:textColor="#ffffffff"
            android:textSize="16sp"
            android:layout_marginTop="@dimen/dimens_10dp"
            android:layout_marginBottom="@dimen/dimens_10dp"
            />
</LinearLayout>

java代码:

//声明
   private long calendarTime;
    private Calendar calendar;

//使用
        calendarView.setOnDateChangeListener(new CalendarView.OnDateChangeListener() {
            @Override
            public void onSelectedDayChange(CalendarView view, int year, int month, int dayOfMonth) {
                //显示用户选择的日期
                Util.showToast(mContext, year + "年" + (month + 1) + "月" + dayOfMonth + "日");
                if (calendar == null) {
                    calendar = Calendar.getInstance();
                }
                calendar.set(year, month, dayOfMonth);
                calendarTime = calendar.getTimeInMillis();

            }
        });
//点击事件
public void onViewClicked() {
        long systemTime = System.currentTimeMillis();
        if (systemTime > calendarTime && DateUtil.compareToday(calendarTime) != 0) {
            Util.showToast(mContext, R.string.unchose_time);
        } else {
            Util.showToast(mContext, R.string.current_time);
        }
        LogUtils.e("time", "calendarTime: " + calendarTime + "systemTime" + systemTime);
    }