- Calender view page added

- migrated to tabbed bottom bar
 - update and clear filters fixed

app/build.gradle

@@ -88,4 +88,6 @@ dependencies {
     implementation "org.kodein.di:kodein-di-framework-android-core:$KODEIN_VERSION"
     / * jxl * /
     implementation "net.sourceforge.jexcelapi:jxl:$JEXCEL_VERSION"
+    / * calendar view * /
+    implementation 'com.applandeo:material-calendar-view:1.7.0'
 }

app/src/main/java/com/appttude/h_mal/farmr/base/BaseFragment.kt

@@ -29,13 +29,6 @@ abstract class BaseFragment<V : BaseViewModel>(@LayoutRes contentLayoutId: Int)
 
     var mActivity: BaseActivity? = null
 
-    private var shortAnimationDuration by Delegates.notNull<Int>()
-
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        shortAnimationDuration = resources.getInteger(android.R.integer.config_shortAnimTime)
-    }
-
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         mActivity = requireActivity() as BaseActivity

app/src/main/java/com/appttude/h_mal/farmr/base/BaseListAdapter.kt

@@ -12,7 +12,7 @@ import com.appttude.h_mal.farmr.utils.show
 abstract class BaseListAdapter<T : Any>(
     diff: DiffUtil.ItemCallback<T>,
     private val layoutId: Int,
-    private val emptyView: View
+    private val emptyView: View?
 ) : ListAdapter<T, BaseListAdapter.CurrentViewHolder>(diff) {
 
     override fun onCreateViewHolder(
@@ -49,8 +49,8 @@ abstract class BaseListAdapter<T : Any>(
             }
 
             fun checkEmpty() {
-                if (itemCount == 0) emptyView.show()
-                else emptyView.hide()
+                if (itemCount == 0) emptyView?.show()
+                else emptyView?.hide()
             }
         })
     }

app/src/main/java/com/appttude/h_mal/farmr/base/ChildFragment.kt

@@ -0,0 +1,68 @@
+package com.appttude.h_mal.farmr.base
+
+import android.os.Bundle
+import android.view.View
+import androidx.annotation.LayoutRes
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.ViewModelProvider
+import androidx.navigation.NavDirections
+import com.appttude.h_mal.farmr.model.ViewState
+import com.appttude.h_mal.farmr.utils.getGenericClassAt
+import com.appttude.h_mal.farmr.utils.navigateTo
+import com.appttude.h_mal.farmr.viewmodel.ApplicationViewModelFactory
+import org.kodein.di.KodeinAware
+import org.kodein.di.android.x.kodein
+import org.kodein.di.generic.instance
+import java.io.IOException
+
+@Suppress("EmptyMethod", "EmptyMethod")
+abstract class ChildFragment<V : BaseViewModel>(@LayoutRes contentLayoutId: Int) :
+    Fragment(contentLayoutId), KodeinAware {
+
+    override val kodein by kodein()
+    private val factory by instance<ApplicationViewModelFactory>()
+
+    lateinit var viewModel: V
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        viewModel =
+            ViewModelProvider(requireParentFragment().requireParentFragment(), factory)[getGenericClassAt<V>(0).java]
+        configureObserver()
+    }
+
+    private fun configureObserver() {
+        viewModel.uiState.observe(viewLifecycleOwner) {
+            when (it) {
+                is ViewState.HasStarted -> onStarted()
+                is ViewState.HasData<*> -> onSuccess(it.data)
+                is ViewState.HasError<*> -> onFailure(it.error)
+            }
+        }
+    }
+
+    /**
+     *  Called in case of starting operation liveData in viewModel
+     */
+    open fun onStarted() {}
+
+    /**
+     *  Called in case of success or some data emitted from the liveData in viewModel
+     */
+    open fun onSuccess(data: Any?) {}
+
+    /**
+     *  Called in case of failure or some error emitted from the liveData in viewModel
+     */
+    open fun onFailure(error: Any?) {}
+
+
+    fun navigateParent(navArg: Any) {
+        val fragment = requireParentFragment().requireParentFragment()
+        when(navArg) {
+            is Int -> (fragment).navigateTo(navArg)
+            is NavDirections -> (fragment).navigateTo(navArg)
+            else -> { throw IOException("${navArg::class} is not a valid navigation argment") }
+        }
+    }
+}

app/src/main/java/com/appttude/h_mal/farmr/data/Repository.kt

@@ -20,5 +20,5 @@ interface Repository {
         timeIn: String?,
         timeOut: String?,
         type: String?
-    )
+    ): Boolean
 }

app/src/main/java/com/appttude/h_mal/farmr/data/RepositoryImpl.kt

@@ -64,8 +64,8 @@ class RepositoryImpl(
         timeIn: String?,
         timeOut: String?,
         type: String?
-    ) {
-        preferenceProvider.saveFilteringDetails(description, timeIn, timeOut, type)
+    ): Boolean {
+        return preferenceProvider.saveFilteringDetails(description, timeIn, timeOut, type)
     }
 
 }

app/src/main/java/com/appttude/h_mal/farmr/data/prefs/PreferencesProvider.kt

@@ -44,13 +44,13 @@ class PreferenceProvider(
         timeIn: String?,
         timeOut: String?,
         type: String?
-    ) {
-        preference.edit()
+    ): Boolean {
+        return preference.edit()
             .putString(DESCRIPTION, description)
             .putString(DATE_IN, timeIn)
             .putString(DATE_OUT, timeOut)
             .putString(TYPE, type)
-            .apply()
+            .commit()
     }
 
     fun getFilteringDetails(): Map<String, String?> {

app/src/main/java/com/appttude/h_mal/farmr/ui/CalendarFragment.kt

@@ -0,0 +1,54 @@
+package com.appttude.h_mal.farmr.ui
+
+import android.os.Bundle
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+import com.applandeo.materialcalendarview.CalendarView
+import com.applandeo.materialcalendarview.EventDay
+import com.appttude.h_mal.farmr.R
+import com.appttude.h_mal.farmr.base.ChildFragment
+import com.appttude.h_mal.farmr.data.legacydb.ShiftObject
+import com.appttude.h_mal.farmr.utils.tryGet
+import com.appttude.h_mal.farmr.viewmodel.MainViewModel
+import java.util.Calendar
+
+class CalendarFragment : ChildFragment<MainViewModel>(R.layout.fragment_calendar) {
+    private lateinit var shiftListView: RecyclerView
+    private lateinit var calendarView: CalendarView
+
+    private lateinit var mAdapter: ShiftListAdapter
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        shiftListView = view.findViewById(R.id.shifts_available_recycler)
+        calendarView = view.findViewById(R.id.calendarView)
+
+        mAdapter = ShiftListAdapter(this, null, viewModel)
+        shiftListView.adapter = mAdapter
+
+        calendarView.setOnDayClickListener { populateShiftListsForDay(it.calendar) }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        viewModel.refreshLiveData()
+    }
+
+    override fun onSuccess(data: Any?) {
+        super.onSuccess(data)
+        if (data is List<*>) {
+            val events: List<EventDay>? = viewModel.retrieveEvents()
+            calendarView.setEvents(events)
+
+            tryGet { calendarView.firstSelectedDate }?.let {
+                populateShiftListsForDay(it)
+            }
+        }
+    }
+
+    private fun populateShiftListsForDay(calendar: Calendar) {
+        val data: List<ShiftObject>? = viewModel.getShiftsOnTheDay(calendar)
+        mAdapter.submitList(data)
+    }
+
+}

app/src/main/java/com/appttude/h_mal/farmr/ui/FragmentList.kt

@@ -0,0 +1,46 @@
+package com.appttude.h_mal.farmr.ui
+
+import android.os.Bundle
+import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+import com.appttude.h_mal.farmr.R
+import com.appttude.h_mal.farmr.base.ChildFragment
+import com.appttude.h_mal.farmr.data.legacydb.ShiftObject
+import com.appttude.h_mal.farmr.model.Success
+import com.appttude.h_mal.farmr.utils.displayToast
+import com.appttude.h_mal.farmr.utils.navigateTo
+import com.appttude.h_mal.farmr.viewmodel.MainViewModel
+import com.google.android.material.floatingactionbutton.FloatingActionButton
+
+
+class FragmentList : ChildFragment<MainViewModel>(R.layout.fragment_list) {
+    private lateinit var productListView: RecyclerView
+    private lateinit var emptyView: View
+    private lateinit var mAdapter: ShiftListAdapter
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        emptyView = view.findViewById(R.id.empty_view)
+        productListView = view.findViewById(R.id.list_item_view)
+
+        mAdapter = ShiftListAdapter(this, emptyView, viewModel)
+        productListView.adapter = mAdapter
+    }
+
+    override fun onStart() {
+        super.onStart()
+        viewModel.refreshLiveData()
+    }
+
+    override fun onSuccess(data: Any?) {
+        super.onSuccess(data)
+        if (data is List<*>) {
+            @Suppress("UNCHECKED_CAST")
+            mAdapter.submitList(data as List<ShiftObject>)
+        } else if (data is Success) {
+            displayToast(data.successMessage)
+        }
+    }
+
+}

app/src/main/java/com/appttude/h_mal/farmr/ui/FragmentMain.kt

@@ -9,29 +9,26 @@ import android.view.MenuItem
 import android.view.View
 import androidx.activity.OnBackPressedCallback
 import androidx.core.content.FileProvider
-import androidx.recyclerview.widget.RecyclerView
+import androidx.navigation.fragment.NavHostFragment
+import androidx.navigation.ui.setupWithNavController
 import com.appttude.h_mal.farmr.R
 import com.appttude.h_mal.farmr.base.BaseFragment
-import com.appttude.h_mal.farmr.data.legacydb.ShiftObject
 import com.appttude.h_mal.farmr.model.Order
 import com.appttude.h_mal.farmr.model.Sortable
-import com.appttude.h_mal.farmr.model.Success
 import com.appttude.h_mal.farmr.utils.createDialog
-import com.appttude.h_mal.farmr.utils.displayToast
 import com.appttude.h_mal.farmr.utils.navigateTo
 import com.appttude.h_mal.farmr.viewmodel.MainViewModel
+import com.google.android.material.bottomnavigation.BottomNavigationView
 import com.google.android.material.floatingactionbutton.FloatingActionButton
 import java.io.File
 import kotlin.system.exitProcess
 
 
 class FragmentMain : BaseFragment<MainViewModel>(R.layout.fragment_main) {
-    private lateinit var productListView: RecyclerView
-    private lateinit var emptyView: View
-    private lateinit var mAdapter: ShiftListAdapter
-
     private lateinit var onBackPressed: OnBackPressedCallback
 
+    lateinit var navView: BottomNavigationView
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         // Inflate the layout for this fragment
@@ -47,7 +44,6 @@ class FragmentMain : BaseFragment<MainViewModel>(R.layout.fragment_main) {
 
     override fun onResume() {
         super.onResume()
-        setTitle("Shift List")
 
         onBackPressed.isEnabled = true
     }
@@ -55,43 +51,39 @@ class FragmentMain : BaseFragment<MainViewModel>(R.layout.fragment_main) {
     override fun onPause() {
         super.onPause()
         onBackPressed.isEnabled = false
+
+        viewModel.saveBottomBarState(navView.selectedItemId)
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        emptyView = view.findViewById(R.id.empty_view)
-        productListView = view.findViewById(R.id.list_item_view)
+        navView = view.findViewById(R.id.bottom_bar)
+        val navHost = childFragmentManager.findFragmentById(R.id.sub_container) as NavHostFragment
 
-        mAdapter = ShiftListAdapter(this, emptyView, viewModel)
-        productListView.adapter = mAdapter
+        val navController = navHost.navController
+        navController.setGraph(R.navigation.home_navigation)
+
+        navView.setOnNavigationItemSelectedListener {
+            setTitle(it.title.toString())
+            true
+        }
+        navView.setupWithNavController(navController)
+
+        viewModel.getBottomBarState()?.let {
+            navView.selectedItemId = it
+        }
 
         view.findViewById<FloatingActionButton>(R.id.fab1).setOnClickListener {
             navigateTo(R.id.main_to_addItem)
         }
     }
 
-    override fun onStart() {
-        super.onStart()
-        viewModel.refreshLiveData()
-    }
-
     override fun onCreateOptionsMenu(menu: Menu, inflater: MenuInflater) {
         // Inflate the menu; this adds items to the action bar if it is present.
         inflater.inflate(R.menu.menu_main, menu)
     }
 
-    override fun onSuccess(data: Any?) {
-        super.onSuccess(data)
-        if (data is List<*>) {
-            @Suppress("UNCHECKED_CAST")
-            mAdapter.submitList(data as List<ShiftObject>)
-        }
-        if (data is Success) {
-            displayToast(data.successMessage)
-        }
-    }
-
     override fun onOptionsItemSelected(item: MenuItem): Boolean {
         when (item.itemId) {
             R.id.delete_all -> {

app/src/main/java/com/appttude/h_mal/farmr/ui/ShiftListAdapter.kt

@@ -8,14 +8,13 @@ import android.view.ViewGroup
 import android.widget.ImageView
 import android.widget.TextView
 import androidx.appcompat.widget.PopupMenu
-import androidx.fragment.app.Fragment
 import androidx.recyclerview.widget.DiffUtil
 import com.appttude.h_mal.farmr.R
 import com.appttude.h_mal.farmr.base.BaseListAdapter
+import com.appttude.h_mal.farmr.base.ChildFragment
 import com.appttude.h_mal.farmr.data.legacydb.ShiftObject
 import com.appttude.h_mal.farmr.model.ShiftType
 import com.appttude.h_mal.farmr.utils.formatToTwoDpString
-import com.appttude.h_mal.farmr.utils.navigateTo
 import com.appttude.h_mal.farmr.viewmodel.MainViewModel
 
 
@@ -23,8 +22,8 @@ const val PIECE_ITEM = 500
 const val HOURLY_ITEM = 501
 
 class ShiftListAdapter(
-    private val fragment: Fragment,
-    emptyView: View,
+    private val fragment: ChildFragment<*>,
+    emptyView: View?,
     private val viewModel: MainViewModel
 ) : BaseListAdapter<ShiftObject>(diffCallBack, R.layout.list_item_1, emptyView) {
 
@@ -62,7 +61,7 @@ class ShiftListAdapter(
         view.setOnClickListener {
             // Navigate to further info
             val nav = FragmentMainDirections.mainToFurtherInfo(data.id)
-            fragment.navigateTo(nav)
+            fragment.navigateParent(nav)
         }
         editView.setOnClickListener {
             //creating a popup menu
@@ -76,7 +75,7 @@ class ShiftListAdapter(
                     R.id.update -> {
                         // Navigate to edit
                         val nav = FragmentMainDirections.mainToAddItem(data.id)
-                        fragment.navigateTo(nav)
+                        fragment.navigateParent(nav)
                         return@setOnMenuItemClickListener true
                     }
 

app/src/main/java/com/appttude/h_mal/farmr/utils/Formatting.kt

@@ -48,6 +48,13 @@ fun String.convertDateString(format: String = DATE_FORMAT): Date? {
     return formatter.parse(this)
 }
 
+fun String.convertToCalendar(format: String = DATE_FORMAT): Calendar? {
+    val date = convertDateString(format)
+    val calendar = Calendar.getInstance()
+    calendar.time = date ?: return null
+    return calendar
+}
+
 /**
  * turns "HH:mm" into an hour and minutes pair
  *

app/src/main/java/com/appttude/h_mal/farmr/utils/GenericsUtil.kt

@@ -30,9 +30,25 @@ inline fun<T: Any?> T.validateField(validate: (T) -> Boolean, onError: () -> Uni
  * Returns a list of all elements sorted according to the specified comparator. In order of ascending or descending
  * The sort is stable. It means that equal elements preserve their order relative to each other after sorting.
  */
-inline fun <T, R : Comparable<R>> Iterable<T>.sortedByOrder(order: Order = Order.ASCENDING, crossinline selector: (T) -> R?): List<T> {
+inline fun <T, R : Comparable<R>> Iterable<T>.sortedByOrder(
+    order: Order = Order.ASCENDING,
+    crossinline selector: (T) -> R?
+): List<T> {
     return when (order) {
         Order.ASCENDING -> sortedWith(compareBy(selector))
         Order.DESCENDING -> sortedWith(compareByDescending(selector))
     }
 }
+
+/**
+ * Tries to retrieve a variable that may throw an exception
+ *
+ * @Returns variable if successful else null
+ */
+inline fun <T : Any?> tryGet(validate: () -> T?): T? {
+    return try {
+        validate.invoke()
+    } catch (e: Exception) {
+        null
+    }
+}

app/src/main/java/com/appttude/h_mal/farmr/utils/NavigationUtils.kt

@@ -5,6 +5,7 @@ import androidx.fragment.app.Fragment
 import androidx.navigation.NavDirections
 import androidx.navigation.Navigation
 import com.appttude.h_mal.farmr.R
+import com.appttude.h_mal.farmr.base.ChildFragment
 
 fun Fragment.navigateToFragment(newFragment: Fragment) {
     childFragmentManager.beginTransaction()

app/src/main/java/com/appttude/h_mal/farmr/viewmodel/MainViewModel.kt

@@ -1,8 +1,12 @@
 package com.appttude.h_mal.farmr.viewmodel
 
+import android.graphics.Color
+import android.graphics.drawable.Drawable
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.Observer
+import com.applandeo.materialcalendarview.EventDay
+import com.appttude.h_mal.farmr.R
 import com.appttude.h_mal.farmr.data.Repository
 import com.appttude.h_mal.farmr.data.legacydb.ShiftObject
 import com.appttude.h_mal.farmr.data.legacydb.ShiftsContract.ShiftsEntry.COLUMN_SHIFT_BREAK
@@ -21,6 +25,7 @@ import com.appttude.h_mal.farmr.model.ShiftType
 import com.appttude.h_mal.farmr.model.Sortable
 import com.appttude.h_mal.farmr.model.Success
 import com.appttude.h_mal.farmr.utils.convertDateString
+import com.appttude.h_mal.farmr.utils.convertToCalendar
 import com.appttude.h_mal.farmr.utils.formatAsCurrencyString
 import com.appttude.h_mal.farmr.utils.sortedByOrder
 import jxl.Workbook
@@ -30,6 +35,7 @@ import jxl.write.WritableWorkbook
 import jxl.write.WriteException
 import java.io.File
 import java.io.IOException
+import java.util.Calendar
 import java.util.Locale
 
 
@@ -43,6 +49,8 @@ class MainViewModel(
     private var mSort: Sortable = Sortable.ID
     private var mOrder: Order = Order.ASCENDING
 
+    private var selectedItemId: Int? = null
+
     private val observer = Observer<List<ShiftObject>> {
         it?.let {
             val result = it.applyFilters().sortList(mSort, mOrder)
@@ -199,9 +207,8 @@ class MainViewModel(
     }
 
     fun clearFilters() {
-        super.setFiltrationDetails(null, null, null, null)
-        onSuccess(Success("Filters have been cleared"))
-        refreshLiveData()
+        val result = super.setFiltrationDetails(null, null, null, null)
+        if (result) refreshLiveData()
     }
 
     fun createExcelSheet(file: File): File? {
@@ -283,4 +290,25 @@ class MainViewModel(
         return null
     }
 
+    fun retrieveEvents(): List<EventDay>? {
+        val shiftList = shiftLiveData.value ?: return null
+        return shiftList.applyFilters().mapNotNull {
+            it.date.convertToCalendar()
+                ?.let { d -> EventDay(d, R.drawable.baseline_list_alt_24, Color.parseColor("#228B22")) }
+        }
+    }
+
+    fun getShiftsOnTheDay(calendar: Calendar): List<ShiftObject>? {
+        val shiftList = shiftLiveData.value ?: return null
+        return shiftList.filter { it.date.convertToCalendar()?.compareTo(calendar) == 0 }
+    }
+
+    fun saveBottomBarState(selectedItemId: Int) {
+        this.selectedItemId = selectedItemId
+    }
+
+    fun getBottomBarState(): Int? {
+        return selectedItemId
+    }
+
 }

app/src/main/java/com/appttude/h_mal/farmr/viewmodel/ShiftViewModel.kt

@@ -18,25 +18,13 @@ open class ShiftViewModel(
      */
     fun getCurrentShift(id: Long) = repository.readSingleShiftFromDatabase(id)
 
-    /**
-     * Lambda function that will invoke onError(...) on failure
-     * but update live data when successful
-     */
-    private inline fun doTry(operation: () -> Unit) {
-        try {
-            operation.invoke()
-        } catch (e: Exception) {
-            onError(e)
-        }
-    }
-
     open fun setFiltrationDetails(
         description: String?,
         dateFrom: String?,
         dateTo: String?,
         type: String?
-    ) {
-        repository.setFilteringDetailsInPrefs(description, dateFrom, dateTo, type)
+    ): Boolean {
+        return repository.setFilteringDetailsInPrefs(description, dateFrom, dateTo, type)
     }
 
     open fun getFiltrationDetails(): FilterStore {

app/src/main/res/drawable/baseline_calendar_month_24.xml

@@ -0,0 +1,5 @@
+<vector android:height="24dp" android:tint="#000000"
+    android:viewportHeight="24" android:viewportWidth="24"
+    android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M19,4h-1V2h-2v2H8V2H6v2H5C3.89,4 3.01,4.9 3.01,6L3,20c0,1.1 0.89,2 2,2h14c1.1,0 2,-0.9 2,-2V6C21,4.9 20.1,4 19,4zM19,20H5V10h14V20zM9,14H7v-2h2V14zM13,14h-2v-2h2V14zM17,14h-2v-2h2V14zM9,18H7v-2h2V18zM13,18h-2v-2h2V18zM17,18h-2v-2h2V18z"/>
+</vector>

app/src/main/res/drawable/baseline_list_alt_24.xml

@@ -0,0 +1,5 @@
+<vector android:autoMirrored="true" android:height="24dp"
+    android:tint="#000000" android:viewportHeight="24"
+    android:viewportWidth="24" android:width="24dp" xmlns:android="http://schemas.android.com/apk/res/android">
+    <path android:fillColor="@android:color/white" android:pathData="M19,5v14L5,19L5,5h14m1.1,-2L3.9,3c-0.5,0 -0.9,0.4 -0.9,0.9v16.2c0,0.4 0.4,0.9 0.9,0.9h16.2c0.4,0 0.9,-0.5 0.9,-0.9L21,3.9c0,-0.5 -0.5,-0.9 -0.9,-0.9zM11,7h6v2h-6L11,7zM11,11h6v2h-6v-2zM11,15h6v2h-6zM7,7h2v2L7,9zM7,11h2v2L7,13zM7,15h2v2L7,17z"/>
+</vector>

app/src/main/res/layout/fragment_calendar.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingBottom="@dimen/activity_vertical_margin"
+    tools:context=".ui.CalendarFragment">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:paddingLeft="@dimen/activity_horizontal_margin"
+        android:paddingTop="@dimen/activity_vertical_margin"
+        android:paddingRight="@dimen/activity_horizontal_margin">
+
+        <com.applandeo.materialcalendarview.CalendarView
+            android:id="@+id/calendarView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            app:headerColor="@color/colorPrimary"
+            app:highlightedDaysLabelsColor="@color/colorPrimary"
+            app:selectionColor="@color/colorAccent"
+            app:type="classic" />
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/shifts_available_recycler"
+            app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/activity_horizontal_margin"
+            android:nestedScrollingEnabled="false"
+            tools:itemCount="5"
+            tools:listitem="@layout/list_cell_hourly" />
+    </LinearLayout>
+
+</ScrollView>

app/src/main/res/layout/fragment_list.xml

@@ -0,0 +1,24 @@
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    tools:context="com.appttude.h_mal.farmr.ui.FragmentList">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/list_item_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+        tools:listitem="@layout/list_cell_hourly">
+    </androidx.recyclerview.widget.RecyclerView>
+
+    <include
+        android:layout_centerInParent="true"
+        android:visibility="visible"
+        layout="@layout/empty_list_view"
+        android:id="@+id/empty_view"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"/>
+
+</RelativeLayout>

app/src/main/res/layout/fragment_main.xml

@@ -1,34 +1,39 @@
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
     tools:context="com.appttude.h_mal.farmr.ui.FragmentMain">
 
-    <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/list_item_view"
+    <androidx.fragment.app.FragmentContainerView
+        android:id="@+id/sub_container"
+        android:name="androidx.navigation.fragment.NavHostFragment"
         android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
-        tools:listitem="@layout/list_cell_hourly">
-    </androidx.recyclerview.widget.RecyclerView>
+        android:layout_height="0dp"
+        app:layout_constraintBottom_toTopOf="@id/bottom_bar"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:layout="@layout/fragment_calendar" />
+
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/bottom_bar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:menu="@menu/bottom_navigation_menu" />
 
     <com.google.android.material.floatingactionbutton.FloatingActionButton
         android:id="@+id/fab1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_alignParentRight="true"
-        android:layout_alignParentBottom="true"
+        app:layout_constraintRight_toRightOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/bottom_bar"
         android:layout_margin="@dimen/fab_margin"
+        android:contentDescription="@string/fab"
         android:src="@drawable/add"
         app:backgroundTint="@color/colorPrimary" />
 
-    <include
-        android:layout_centerInParent="true"
-        android:visibility="visible"
-        layout="@layout/empty_list_view"
-        android:id="@+id/empty_view"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"/>
-
-</RelativeLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/menu/bottom_navigation_menu.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+    <item
+        android:id="@+id/nav_list"
+        app:showAsAction="always|withText"
+        android:icon="@drawable/baseline_list_alt_24"
+        android:title="@string/text_label_1"/>
+    <item
+        android:id="@+id/nav_calendar"
+        app:showAsAction="always|withText"
+        android:icon="@drawable/baseline_calendar_month_24"
+        android:title="@string/text_label_2"/>
+</menu>

app/src/main/res/navigation/home_navigation.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/shift_navigation"
+    app:startDestination="@id/nav_list">
+    <fragment
+        android:id="@+id/nav_list"
+        android:name="com.appttude.h_mal.farmr.ui.FragmentList"
+        android:label="fragment_list"
+        tools:layout="@layout/fragment_list" />
+    <fragment
+        android:id="@+id/nav_calendar"
+        android:name="com.appttude.h_mal.farmr.ui.CalendarFragment"
+        android:label="fragment_calendar"
+        tools:layout="@layout/fragment_calendar" />
+</navigation>

app/src/main/res/values/strings.xml

@@ -103,4 +103,7 @@
     <string name="pound_sign">£</string>
     <string name="delete_shift">Delete shift</string>
     <string name="update_shift">Update Shift</string>
+    <string name="fab">Floating action button</string>
+    <string name="text_label_1">Shifts</string>
+    <string name="text_label_2">Calendar</string>
 </resources>