implementation 'com.github.edasich:widget-time:LATEST_VERSION'

Add DateTimeSwitcher in xml.

<com.github.edasich.widget.time.DateTimeSwitcher
    android:id="@+id/dateTimeSwitcher"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"/>

Currently, supported modes are Day, Week, Month and Year. To change the mode just set the new mode to DateTimeSwitcher :

dateTimeSwitcher.switchMode = SwitchMode.DAY

When mode is changed, start and end dates are evaluated based on mode.

When dates are being changed by pressing next and previous buttons, title is updated based on evaluated start and end dates. To apply your custom date format for title, use DateTimeSwitcherAdapter.

dateTimeSwitcher.adapter = object : DateTimeSwitcherAdapter() {
    override fun getTitle(
        switchMode: SwitchMode,
        startDateTime: LocalDateTime,
        endDateTime: LocalDateTime
    ): String {
        ..
    }
}

dateTimeSwitcher.setOnSwitchChangedListener { switchMode, startDateTime, endDateTime ->
    ..
}

dateTimeSwitcher.setOnNextClickListener { switchMode, startDateTime, endDateTime ->
    ..
}
dateTimeSwitcher.setOnPreviousClickListener { switchMode, startDateTime, endDateTime ->
    ..
}

This library is using LocalDateTime, LocalDate and LocalTime which are part of java.time package.

In order to use this library please read this official doc core android library desugaring.