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

dependencies {
	         implementation 'com.github.mahimrocky:WeekDaySelector:1.0.0'
	}

    <com.skyhope.weekday.WeekDaySelector
        android:id="@+id/weekDaySelector"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        app:holiday_circle_color="@color/colorAccent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:selected_date_circle_color="@color/colorPrimary" />

  weekDaySelector = findViewById(R.id.weekDaySelector);

        Set<Integer> holiday = new HashSet<>();
        holiday.add(Holiday.SUNDAY);
        weekDaySelector.setHoliday(holiday);

        weekDaySelector.setWeekItemClickListener(this);
    }

    @Override
    public void onGetItem(WeekModel model) {
        Toast.makeText(this, model.getMonth(), Toast.LENGTH_SHORT).show();
    }