WeserPlaner 1.0.2: canteen news button is now highlighted if news are available, and the news sheet will now only be shown if there are any news available. Otherwise, a toast will tell the user that no news are available.

app/release/output-metadata.json

@@ -11,8 +11,8 @@
       "type": "SINGLE",
       "filters": [],
       "attributes": [],
-      "versionCode": 4,
+      "versionCode": 5,
-      "versionName": "1.0.1",
+      "versionName": "1.0.2",
       "outputFile": "app-release.apk"
     }
   ],

app/src/main/java/com/denizk0461/weserplaner/db/AppRepository.kt

@@ -27,7 +27,7 @@ class AppRepository(app: Application) {
     private val blankDietaryPrefs: String = DietaryPreferences.TEMPLATE_EMPTY
 
     /**
-     * Used to observe just to register an update of the user-set dietary preferences.
+     * Used to observe whenever updates are made to the dietary preferences.
      */
     val dietaryPreferencesUpdate: MutableLiveData<Int> = MutableLiveData(0)
 

app/src/main/java/com/denizk0461/weserplaner/fragment/CanteenFragment.kt

@@ -1,16 +1,20 @@
 package com.denizk0461.weserplaner.fragment
 
+import android.content.res.ColorStateList
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.appcompat.content.res.AppCompatResources
 import androidx.appcompat.widget.PopupMenu
 import androidx.fragment.app.viewModels
 import com.denizk0461.weserplaner.R
 import com.denizk0461.weserplaner.adapter.CanteenOfferPageAdapter
 import com.denizk0461.weserplaner.data.getTextSheet
+import com.denizk0461.weserplaner.data.getThemedColor
 import com.denizk0461.weserplaner.data.setRainbowProgressCircle
 import com.denizk0461.weserplaner.data.showErrorSnackBar
+import com.denizk0461.weserplaner.data.showToast
 import com.denizk0461.weserplaner.databinding.FragmentCanteenBinding
 import com.denizk0461.weserplaner.model.*
 import com.denizk0461.weserplaner.viewmodel.CanteenViewModel
@@ -60,13 +64,53 @@ class CanteenFragment : AppFragment() {
             R.string.title_canteen_template,
             getCurrentlySelectedCanteenName(),
         )
+
+        // Set the title to be selected so it scrolls (marquee)
         binding.appTitleBar.isSelected = true
 
-        binding.buttonNotifications.setOnClickListener {
+        // Set up observer for the selected canteen
-            openBottomSheet(getTextSheet(
+        viewModel.getCanteen().observe(viewLifecycleOwner) { canteen ->
-                getString(R.string.canteen_news_sheet_title),
+            if (canteen == null || canteen.news.isBlank()) {
-                contentId = TextSheetContentId.NEWS,
+                // Set icon to show that no news are available
-            ))
+                binding.buttonNotifications.icon = AppCompatResources.getDrawable(
+                    context,
+                    R.drawable.notifications_none,
+                )
+
+                // Apply default colour
+                binding.buttonNotifications.iconTint = ColorStateList.valueOf(
+                    context.theme.getThemedColor(
+                        R.attr.colorOnSurfaceVariant
+                    )
+                )
+
+                // Set up click listener to tell the user that no news are available
+                binding.buttonNotifications.setOnClickListener {
+                    showToast(context, getString(R.string.text_sheet_news_empty))
+                }
+
+            } else {
+                // Set icon to show that news are available
+                binding.buttonNotifications.icon = AppCompatResources.getDrawable(
+                    context,
+                    R.drawable.notifications_active,
+                )
+
+                // Apply highlight colour
+                binding.buttonNotifications.iconTint = ColorStateList.valueOf(
+                    context.theme.getThemedColor(
+                        com.google.android.material.R.attr.colorPrimary
+                    )
+                )
+
+                // Set up click listener to show news sheet
+                binding.buttonNotifications.setOnClickListener {
+                    openBottomSheet(getTextSheet(
+                        getString(R.string.canteen_news_sheet_title),
+                        contentId = TextSheetContentId.NEWS,
+                    ))
+                }
+            }
         }
 
         // Assign a preference value to every button to filter for dietary preferences

app/src/main/java/com/denizk0461/weserplaner/viewmodel/CanteenPageViewModel.kt

@@ -17,6 +17,9 @@ class CanteenPageViewModel(app: Application) : AppViewModel(app) {
     fun getOffersByDay(day: Int): LiveData<List<CanteenOffer>> =
         repo.getOffersByDay(day)
 
+    /**
+     * Used to observe whenever updates are made to the dietary preferences.
+     */
     val dietaryPreferencesUpdate: LiveData<Int> = repo.dietaryPreferencesUpdate
 
     /**

app/src/main/java/com/denizk0461/weserplaner/viewmodel/CanteenViewModel.kt

@@ -42,6 +42,16 @@ class CanteenViewModel(app: Application) : AppViewModel(app) {
         }
     }
 
+    /**
+     * Retrieves the canteen stored in the database. Should always be 0 or 1.
+     *
+     * @return canteen
+     */
+    fun getCanteen(): LiveData<OfferCanteen> = repo.getCanteen()
+
+    /**
+     * Register that the user has made an update to their dietary preferences.
+     */
     fun registerDietaryPreferencesUpdate() {
         repo.dietaryPreferencesUpdate.postValue(repo.dietaryPreferencesUpdate.value?.plus(1))
     }

app/src/main/res/drawable/notifications_active.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="M7.58,4.08L6.15,2.65C3.75,4.48 2.17,7.3 2.03,10.5h2c0.15,-2.65 1.51,-4.97 3.55,-6.42zM19.97,10.5h2c-0.15,-3.2 -1.73,-6.02 -4.12,-7.85l-1.42,1.43c2.02,1.45 3.39,3.77 3.54,6.42zM18,11c0,-3.07 -1.64,-5.64 -4.5,-6.32L13.5,4c0,-0.83 -0.67,-1.5 -1.5,-1.5s-1.5,0.67 -1.5,1.5v0.68C7.63,5.36 6,7.92 6,11v5l-2,2v1h16v-1l-2,-2v-5zM12,22c0.14,0 0.27,-0.01 0.4,-0.04 0.65,-0.14 1.18,-0.58 1.44,-1.18 0.1,-0.24 0.15,-0.5 0.15,-0.78h-4c0.01,1.1 0.9,2 2.01,2z"/>
+</vector>

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

@@ -1,5 +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="M12,22c1.1,0 2,-0.9 2,-2h-4c0,1.1 0.89,2 2,2zM18,16v-5c0,-3.07 -1.64,-5.64 -4.5,-6.32L13.5,4c0,-0.83 -0.67,-1.5 -1.5,-1.5s-1.5,0.67 -1.5,1.5v0.68C7.63,5.36 6,7.92 6,11v5l-2,2v1h16v-1l-2,-2z"/>
+    <path android:fillColor="@android:color/white" android:pathData="M12,22c1.1,0 2,-0.9 2,-2h-4c0,1.1 0.9,2 2,2zM18,16v-5c0,-3.07 -1.63,-5.64 -4.5,-6.32L13.5,4c0,-0.83 -0.67,-1.5 -1.5,-1.5s-1.5,0.67 -1.5,1.5v0.68C7.64,5.36 6,7.92 6,11v5l-2,2v1h16v-1l-2,-2zM16,17L8,17v-6c0,-2.48 1.51,-4.5 4,-4.5s4,2.02 4,4.5v6z"/>
 </vector>

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

@@ -49,7 +49,7 @@
                     android:layout_width="wrap_content"
                     android:layout_height="wrap_content"
                     android:minWidth="0dp"
-                    app:icon="@drawable/notification"
+                    app:icon="@drawable/notifications_none"
                     app:iconPadding="0dp"
                     app:layout_constraintTop_toTopOf="@id/app_title_bar"
                     app:layout_constraintBottom_toBottomOf="@id/app_title_bar"

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

@@ -1,7 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <!-- I am unsure whether these attrs are necessary to define -->
-<!--    <attr name="colorPrimary" type="color" />-->
     <attr name="scheduleColorDefault" type="color" />
     <attr name="colorOutlineVariant" type="color" />
     <attr name="colorOnSurfaceVariant" type="color" />
@@ -11,7 +9,6 @@
     <attr name="colorOnSecondaryContainer" type="color" />
     <attr name="colorText" type="color" />
     <attr name="colorErrorText" type="color" />
-    <!--    <attr name="colorOutline" type="color"/>-->
 
     <!-- dietary preference colours -->
     <!-- fair / animal welfare -->

gradle.properties

@@ -23,4 +23,3 @@ kotlin.code.style=official
 android.nonTransitiveRClass=true
 android.defaults.buildfeatures.buildconfig=true
 android.nonFinalResIds=false
-org.gradle.unsafe.configuration-cache=true