some ui improvements

app/src/main/java/org/foxarmy/barcodescannerforemployees/Utils.kt

@@ -3,6 +3,7 @@ package org.foxarmy.barcodescannerforemployees
 import android.app.Activity
 import android.content.Context
 import android.content.ContextWrapper
+import android.content.SharedPreferences
 import android.graphics.Bitmap
 import android.graphics.BitmapFactory
 import android.graphics.Matrix
@@ -197,13 +198,7 @@ fun noInternetConnectionAvailableNotification(context: Context) {
                 exitProcess(0)
             }
             .setNeutralButton(R.string.logout) { _, _ ->
-                val sharedPreferences = EncryptedSharedPreferences.create(
+                val sharedPreferences = getPreferences(context)
-                    "sensitive",
-                    MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-                    context,
-                    EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-                    EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-                )
 
                 sharedPreferences.edit().putString("token", "").apply()
                 sharedPreferences.edit().putString("server", "").apply()
@@ -213,3 +208,13 @@ fun noInternetConnectionAvailableNotification(context: Context) {
             }.show()
     }
 }
+
+fun getPreferences(context: Context): SharedPreferences {
+    return EncryptedSharedPreferences.create(
+        "sensitive",
+        MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
+        context,
+        EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
+        EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
+    )
+}

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AccountSettingsActivity.kt

@@ -4,8 +4,6 @@ import android.content.Intent
 import android.os.Bundle
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityAccountSettingsBinding
@@ -21,15 +19,7 @@ class AccountSettingsActivity : AppCompatActivity() {
 
         setContentView(binding.root)
 
-        val masterKeyAlias = MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC)
+        val sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-
-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            masterKeyAlias,
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val net = Net()
 

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AddAbstractProductActivity.kt

@@ -17,8 +17,6 @@ import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.core.widget.addTextChangedListener
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import com.journeyapps.barcodescanner.ScanContract
 import com.journeyapps.barcodescanner.ScanIntentResult
 import com.journeyapps.barcodescanner.ScanOptions
@@ -33,7 +31,6 @@ import java.io.FileOutputStream
 import java.nio.file.Files
 import java.nio.file.StandardCopyOption
 import kotlin.concurrent.thread
-import kotlin.math.abs
 
 class AddAbstractProductActivity : AppCompatActivity() {
     private lateinit var imageView: ImageView
@@ -66,13 +63,7 @@ class AddAbstractProductActivity : AppCompatActivity() {
 
         setContentView(R.layout.fragment_add_abstract_product)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val dbHelper = DBStorageController(this, sharedPreferences.getString("currentGroup", "offline")!!)
         DAO = AbstractProductDAO(dbHelper)

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AddCategoryActivity.kt

@@ -6,8 +6,6 @@ import android.os.Bundle
 import android.widget.Button
 import android.widget.EditText
 import android.widget.Toast
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.database.CategoryDAO
@@ -24,13 +22,7 @@ class AddCategoryActivity : Activity() {
 
         setContentView(R.layout.activity_add_category)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val dbHelper = DBStorageController(this, sharedPreferences.getString("currentGroup", "offline")!!)
         DAO = CategoryDAO(dbHelper)

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/AddProductActivity.kt

@@ -13,8 +13,6 @@ import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.core.widget.addTextChangedListener
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import com.journeyapps.barcodescanner.ScanContract
 import com.journeyapps.barcodescanner.ScanIntentResult
 import com.journeyapps.barcodescanner.ScanOptions
@@ -61,13 +59,7 @@ class AddProductActivity : AppCompatActivity() {
 
         setContentView(R.layout.fragment_add_product)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val dbHelper = DBStorageController(this, sharedPreferences.getString("currentGroup", "offline")!!)
         productDAO = ProductDAO(dbHelper)

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/ExpiryCalendarActivity.kt

@@ -7,8 +7,6 @@ import android.os.Bundle
 import android.widget.LinearLayout
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.database.ProductDAO
@@ -26,13 +24,7 @@ class ExpiryCalendarActivity : AppCompatActivity() {
 
         setContentView(R.layout.fragment_expiry_dates)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val dbHelper = DBStorageController(this, sharedPreferences.getString("currentGroup", "database")!!)
         productDAO = ProductDAO(dbHelper)

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/FullscreenActivity.kt

@@ -15,10 +15,7 @@ import java.io.File
 
 class FullscreenActivity : Activity() {
 
-    private lateinit var binding: ActivityFullscreenBinding
     private lateinit var fullscreenImageView: ImageView
-    private lateinit var fullscreenContentControls: LinearLayout
-    private val hideHandler = Handler(Looper.myLooper()!!)
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/GroupActivity.kt

@@ -4,8 +4,6 @@ import android.content.Intent
 import android.os.Bundle
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityGroupBinding
 import org.foxarmy.barcodescannerforemployees.noInternetConnectionAvailableNotification
@@ -20,13 +18,7 @@ class GroupActivity : AppCompatActivity() {
         binding = ActivityGroupBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
-        val sharedPreferences = EncryptedSharedPreferences.create(
+        val sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         binding.createGroupButton.setOnClickListener {
             val groupName = binding.groupNameTextEdit.text.toString()

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/LoginActivity.kt

@@ -5,8 +5,6 @@ import android.os.Bundle
 import android.widget.ArrayAdapter
 import android.widget.Toast
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityLoginBinding
@@ -26,13 +24,7 @@ class LoginActivity : AppCompatActivity() {
 
         fillUpLanguagesSpinner()
 
-        val sharedPreferences = EncryptedSharedPreferences.create(
+        val sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         binding.loginButton.setOnClickListener {
             val server = binding.serverTextEdit.text.toString()

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/MainActivity.kt

@@ -15,8 +15,6 @@ import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.drawerlayout.widget.DrawerLayout
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import androidx.viewpager.widget.ViewPager
 import com.google.android.material.navigation.NavigationView
 import org.foxarmy.barcodescannerforemployees.*
@@ -44,6 +42,9 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
     private var actionBarDrawerToggle: ActionBarDrawerToggle? = null
     private lateinit var ws: WebSocketClient
 
+    var selectionMode = false
+    private var selectedAmount = 0
+
     private lateinit var sharedPreferences: SharedPreferences
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -52,18 +53,18 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
         binding = ActivityMainBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         setSupportActionBar(binding.toolbar)
         setupViewPager(binding.tabViewpager)
         binding.tabTablayout.setupWithViewPager(binding.tabViewpager)
 
+        binding.tabTablayout.setOnDragListener { _, _ ->
+            selectionMode = false
+            selectedAmount = 0
+            true
+        }
+
         drawerLayout = binding.drawerLayout
         actionBarDrawerToggle = ActionBarDrawerToggle(this, drawerLayout, R.string.nav_open, R.string.nav_close)
 
@@ -73,14 +74,6 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
 
         supportActionBar!!.setDisplayHomeAsUpEnabled(true)
 
-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
-
         binding.expiryCalendarFab.setOnClickListener { _ ->
             val expiryCalendarIntent = Intent(this, ExpiryCalendarActivity::class.java)
             val extras = Bundle()
@@ -88,7 +81,7 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
             ContextCompat.startActivity(this, expiryCalendarIntent, extras)
         }
 
-        binding.newElementFab.setOnClickListener { view ->
+        binding.newElementFab.setOnClickListener { _ ->
             val currentPosition = binding.tabTablayout.selectedTabPosition
             val fragment = adapter.getItem(currentPosition)
 
@@ -499,4 +492,17 @@ class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelecte
         val storageFragment = fragment as StorageFragment
         storageFragment.filterByCategory(id)
     }
+
+    fun addSelection() {
+        selectionMode = true
+        selectedAmount ++
+    }
+
+    fun removeSelection() {
+        selectedAmount --
+        if (selectedAmount <= 0) {
+            selectedAmount = 0
+            selectionMode = false
+        }
+    }
 }

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/ManageGroupActivity.kt

@@ -1,11 +1,10 @@
 package org.foxarmy.barcodescannerforemployees.activities
 
 import android.content.Context
+import android.content.SharedPreferences
 import android.os.Bundle
 import android.view.View
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityManageGroupBinding
 import org.foxarmy.barcodescannerforemployees.parseArray
@@ -14,6 +13,7 @@ import org.foxarmy.barcodescannerforemployees.views.GroupMemberView
 class ManageGroupActivity : AppCompatActivity(){
     private lateinit var binding: ActivityManageGroupBinding
     private var isAdmin: Boolean = true
+    private lateinit var sharedPreferences: SharedPreferences
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -23,15 +23,7 @@ class ManageGroupActivity : AppCompatActivity(){
 
         val groupId = intent.extras!!.getInt("groupId")
 
-        val masterKeyAlias = MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC)
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-
-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            masterKeyAlias,
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val net = Net()
 
@@ -56,14 +48,6 @@ class ManageGroupActivity : AppCompatActivity(){
     }
 
     fun amIAnAdminIn(groupId: Int): Boolean {
-        val sharedPreferences = EncryptedSharedPreferences.create(
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
-
         val net = Net()
 
         net.token = sharedPreferences.getString("token", "")!!

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/MyGroupsActivity.kt

@@ -5,8 +5,6 @@ import android.content.Intent
 import android.os.Bundle
 import android.widget.LinearLayout
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.databinding.ActivityMyGroupsBinding
@@ -22,13 +20,7 @@ class MyGroupsActivity : AppCompatActivity(){
         binding = ActivityMyGroupsBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
-        val sharedPreferences = EncryptedSharedPreferences.create(
+        val sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val net = Net()
 

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/NavigatorActivity.kt

@@ -4,8 +4,6 @@ import android.app.Activity
 import android.content.Intent
 import android.content.SharedPreferences
 import android.os.Bundle
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 
 class NavigatorActivity : Activity() {
 
@@ -14,13 +12,7 @@ class NavigatorActivity : Activity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         var intent = Intent(this, MainActivity::class.java)
 

app/src/main/java/org/foxarmy/barcodescannerforemployees/activities/SettingsActivity.kt

@@ -6,8 +6,6 @@ import android.os.Bundle
 import android.view.View
 import android.widget.ArrayAdapter
 import androidx.appcompat.app.AppCompatActivity
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.databinding.ActivitySettingsBinding
 
@@ -21,13 +19,7 @@ class SettingsActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = org.foxarmy.barcodescannerforemployees.getPreferences(this)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            applicationContext,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         myGroups = sharedPreferences.getStringSet("groups", emptySet())!!.toList()
         currentGroup = sharedPreferences.getString("currentGroup", "offline")!!

app/src/main/java/org/foxarmy/barcodescannerforemployees/fragments/CategoriesFragment.kt

@@ -11,13 +11,12 @@ import android.widget.Toast
 import androidx.core.content.ContextCompat
 import androidx.core.view.children
 import androidx.fragment.app.Fragment
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.AddCategoryActivity
 import org.foxarmy.barcodescannerforemployees.database.CategoryDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
+import org.foxarmy.barcodescannerforemployees.getPreferences
 import org.foxarmy.barcodescannerforemployees.views.CategoryView
 
 class CategoriesFragment : Fragment() {
@@ -28,13 +27,7 @@ class CategoriesFragment : Fragment() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(requireContext())
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            requireContext(),
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         prepareDatabaseConnection()
     }

app/src/main/java/org/foxarmy/barcodescannerforemployees/fragments/ShelfFragment.kt

@@ -14,14 +14,13 @@ import androidx.core.content.ContextCompat
 import androidx.core.view.children
 import androidx.fragment.app.Fragment
 import androidx.gridlayout.widget.GridLayout
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.AddProductActivity
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.database.ProductDAO
 import org.foxarmy.barcodescannerforemployees.databinding.FragmentShelfBinding
+import org.foxarmy.barcodescannerforemployees.getPreferences
 import org.foxarmy.barcodescannerforemployees.views.ProductView
 import kotlin.concurrent.thread
 
@@ -38,16 +37,9 @@ class ShelfFragment : Fragment() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(requireContext())
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            requireContext(),
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         prepareDatabaseConnection()
-
     }
 
     override fun onCreateView(

app/src/main/java/org/foxarmy/barcodescannerforemployees/fragments/StorageFragment.kt

@@ -10,8 +10,6 @@ import android.widget.*
 import androidx.core.content.ContextCompat
 import androidx.core.view.children
 import androidx.fragment.app.Fragment
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.Net
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.AddAbstractProductActivity
@@ -20,6 +18,7 @@ import org.foxarmy.barcodescannerforemployees.database.AbstractProductDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.databinding.FragmentStorageBinding
 import org.foxarmy.barcodescannerforemployees.generateThumbnailForImage
+import org.foxarmy.barcodescannerforemployees.getPreferences
 import org.foxarmy.barcodescannerforemployees.views.AbstractProductView
 import kotlin.concurrent.thread
 
@@ -39,13 +38,7 @@ class StorageFragment : Fragment() {
     ): View {
         binding = FragmentStorageBinding.inflate(inflater)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(requireContext())
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            requireContext(),
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         prepareDatabaseConnection()
 

app/src/main/java/org/foxarmy/barcodescannerforemployees/views/AbstractProductView.kt

@@ -16,14 +16,12 @@ import androidx.core.content.ContextCompat
 import androidx.core.content.ContextCompat.startActivity
 import androidx.security.crypto.EncryptedSharedPreferences
 import androidx.security.crypto.MasterKeys
-import org.foxarmy.barcodescannerforemployees.R
+import org.foxarmy.barcodescannerforemployees.*
 import org.foxarmy.barcodescannerforemployees.activities.FullscreenActivity
+import org.foxarmy.barcodescannerforemployees.activities.MainActivity
 import org.foxarmy.barcodescannerforemployees.database.CategoryDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.dataclasses.AbstractProduct
-import org.foxarmy.barcodescannerforemployees.getActivity
-import org.foxarmy.barcodescannerforemployees.getImageUri
-import org.foxarmy.barcodescannerforemployees.getUnitNameById
 import java.io.File
 
 class AbstractProductView : LinearLayout {
@@ -45,13 +43,7 @@ class AbstractProductView: LinearLayout {
         val inflater: LayoutInflater = activity.layoutInflater
         inflater.inflate(R.layout.abstract_product_view, this)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(context)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "database")!!)
         categoryDAO = CategoryDAO(dbHelper)
@@ -76,7 +68,7 @@ class AbstractProductView: LinearLayout {
         update()
     }
 
-    fun init () {
+    private fun init() {
         productLayout = findViewById(R.id.productLayout)
         productPicture = findViewById(R.id.productPicture)
         productNameField = findViewById(R.id.productNameView)
@@ -84,30 +76,8 @@ class AbstractProductView: LinearLayout {
         categoryField = findViewById(R.id.categoryView)
         unitField = findViewById(R.id.unitView)
 
-
+        setUpClicks()
-        productPicture!!.setOnClickListener {
-            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
-            val extras = Bundle()
-            extras.putString("imagehash", abstractProduct.imageHash)
-            fullscreenIntent.putExtras(extras)
-            startActivity(context, fullscreenIntent, extras)
-        }
-
-        productLayout!!.setOnClickListener {
-
-        }
-
         unitField?.text = getUnitNameById(context, abstractProduct.unit)
-
-        productLayout!!.setOnLongClickListener {
-            isProductSelected = !isProductSelected
-            this.background = ContextCompat.getDrawable(context, if (isProductSelected) R.drawable.outline_selected else R.drawable.outline)
-            true
-        }
-
-        productNameField!!.setOnClickListener {
-            Toast.makeText(activity, productNameField!!.text, Toast.LENGTH_SHORT).show()
-        }
     }
 
     fun update() {
@@ -117,10 +87,120 @@ class AbstractProductView: LinearLayout {
         thumbnailsDir.mkdirs()
         val imageUri = getImageUri(activity, File(thumbnailsDir, "${abstractProduct.imageHash}.webp"))
         productPicture!!.setImageURI(imageUri)
-//        productPicture!!.rotation = 90f
 
         productNameField!!.text = abstractProduct.name
         netWeightField!!.text = abstractProduct.netWeight.toString()
         categoryField!!.text = categoryDAO.getCategoryNameById(abstractProduct.category)
     }
+
+
+    private fun setUpClicks() {
+        productLayout!!.setOnLongClickListener { onAnyLongClick() }
+        productNameField!!.setOnLongClickListener { onNameLongClick() }
+        productPicture!!.setOnLongClickListener { onImageLongClick() }
+        netWeightField!!.setOnLongClickListener { onAnyLongClick() }
+        categoryField!!.setOnLongClickListener { onAnyLongClick() }
+        unitField!!.setOnLongClickListener { onAnyLongClick() }
+
+        productLayout!!.setOnClickListener { onAnyClick() }
+        netWeightField!!.setOnClickListener { onAnyClick() }
+        categoryField!!.setOnClickListener { onAnyClick() }
+        unitField!!.setOnClickListener { onAnyClick() }
+        productPicture!!.setOnClickListener { onImageLongClick() }
+        productNameField!!.setOnClickListener { onNameLongClick() }
+    }
+
+    private fun onAnyClick(): Boolean {
+        if (activity !is MainActivity) return false
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            isProductSelected = !isProductSelected
+
+            if (isProductSelected) {
+                mainActivity.addSelection()
+            } else {
+                mainActivity.removeSelection()
+            }
+
+            this.background = ContextCompat.getDrawable(
+                context,
+                if (isProductSelected) R.drawable.outline_selected else R.drawable.outline
+            )
+            return true
+        } else {
+            return false
+        }
+    }
+
+    private fun onAnyLongClick(): Boolean {
+        if (activity !is MainActivity) return false
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            isProductSelected = !isProductSelected
+
+            if (isProductSelected) {
+                mainActivity.addSelection()
+            } else {
+                mainActivity.removeSelection()
+            }
+
+            this.background = ContextCompat.getDrawable(
+                context,
+                if (isProductSelected) R.drawable.outline_selected else R.drawable.outline
+            )
+            return true
+        } else {
+            mainActivity.addSelection()
+
+            isProductSelected = !isProductSelected
+
+            this.background = ContextCompat.getDrawable(
+                context,
+                if (isProductSelected) R.drawable.outline_selected else R.drawable.outline
+            )
+
+            return true
+        }
+    }
+
+    private fun onImageLongClick(): Boolean {
+        if (activity !is MainActivity) {
+            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
+            val extras = Bundle()
+            extras.putString("imagehash", abstractProduct.imageHash)
+            fullscreenIntent.putExtras(extras)
+            startActivity(context, fullscreenIntent, extras)
+            return true
+        }
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            return onAnyLongClick()
+        } else {
+            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
+            val extras = Bundle()
+            extras.putString("imagehash", abstractProduct.imageHash)
+            fullscreenIntent.putExtras(extras)
+            startActivity(context, fullscreenIntent, extras)
+        }
+        return true
+    }
+
+    private fun onNameLongClick(): Boolean {
+        if (activity !is MainActivity) {
+            Toast.makeText(activity, productNameField!!.text, Toast.LENGTH_SHORT).show()
+
+            return true
+        }
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            return onAnyLongClick()
+        } else {
+            Toast.makeText(activity, productNameField!!.text, Toast.LENGTH_SHORT).show()
+        }
+        return true
+    }
 }

app/src/main/java/org/foxarmy/barcodescannerforemployees/views/CategoryView.kt

@@ -7,16 +7,16 @@ import android.view.LayoutInflater
 import android.widget.LinearLayout
 import android.widget.TextView
 import androidx.core.content.ContextCompat
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.MainActivity
 import org.foxarmy.barcodescannerforemployees.database.AbstractProductDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.dataclasses.Category
+import org.foxarmy.barcodescannerforemployees.getPreferences
 
 class CategoryView : LinearLayout {
     var category: Category
+
     val categoryName: TextView
     val amountOfProducts: TextView
     var isCategorySelected = false
@@ -27,13 +27,7 @@ class CategoryView : LinearLayout {
     constructor(activity: Activity, context: Context, category: Category) : super(context) {
         this.category = category
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(context)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "database")!!)
         abstractProductDAO = AbstractProductDAO(dbHelper)
@@ -41,7 +35,7 @@ class CategoryView : LinearLayout {
         val inflater: LayoutInflater = activity.layoutInflater
         inflater.inflate(R.layout.category_view, this)
 
-        this.background = ContextCompat.getDrawable(context, if (isCategorySelected) R.drawable.outline_selected else R.drawable.outline)
+        updateStroke()
 
         categoryName = findViewById(R.id.categoryNameTextView)
         amountOfProducts = findViewById(R.id.amountOfProducts)
@@ -49,13 +43,45 @@ class CategoryView : LinearLayout {
         categoryName.text = category.name
         amountOfProducts.text = abstractProductDAO.getAmountOfAbstractProductsInCategory(category.id).toString()
 
-        setOnLongClickListener {
+        setUpClicks()
+    }
+
+    private fun setUpClicks() {
+        categoryName.setOnClickListener { onCategoryClick() }
+        amountOfProducts.setOnClickListener { onCategoryClick() }
+
+        categoryName.setOnLongClickListener { onAnyLongClick() }
+        amountOfProducts.setOnLongClickListener { onAnyLongClick() }
+    }
+
+    private fun onCategoryClick(): Boolean {
+        if (context !is MainActivity) return false
+        val mainActivity = context as MainActivity
+
+        if (mainActivity.selectionMode) return onAnyLongClick()
+        else (context as MainActivity).filterAbstractProductsByCategory(category.id)
+
+        return true
+    }
+
+    private fun onAnyLongClick(): Boolean {
+        if (context !is MainActivity) return false
+        val mainActivity = context as MainActivity
+
         isCategorySelected = !isCategorySelected
+        updateStroke()
+
+        if (mainActivity.selectionMode) {
+            if (isCategorySelected) mainActivity.addSelection()
+            else mainActivity.removeSelection()
+        } else {
+            mainActivity.addSelection()
+        }
+        return true
+
+    }
+
+    private fun updateStroke() {
         this.background = ContextCompat.getDrawable(context, if (isCategorySelected) R.drawable.outline_selected else R.drawable.outline)
-            true
-        }
-        setOnClickListener {
-            (activity as MainActivity).filterAbstractProductsByCategory(category.id)
-        }
     }
 }

app/src/main/java/org/foxarmy/barcodescannerforemployees/views/ExpiryGroupView.kt

@@ -7,12 +7,11 @@ import android.view.LayoutInflater
 import android.widget.LinearLayout
 import android.widget.TextView
 import androidx.core.content.ContextCompat
-import androidx.security.crypto.EncryptedSharedPreferences
-import androidx.security.crypto.MasterKeys
 import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.ExpiryCalendarActivity
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.database.ProductDAO
+import org.foxarmy.barcodescannerforemployees.getPreferences
 import java.text.SimpleDateFormat
 
 class ExpiryGroupView : LinearLayout {
@@ -24,13 +23,7 @@ class ExpiryGroupView : LinearLayout {
 
     constructor(activity: Activity, context: Context, representingDate: Long) : super(context) {
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(context)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "database")!!)
         productDAO = ProductDAO(dbHelper)

app/src/main/java/org/foxarmy/barcodescannerforemployees/views/ProductView.kt

@@ -13,6 +13,7 @@ import android.view.LayoutInflater
 import android.widget.ImageView
 import android.widget.LinearLayout
 import android.widget.TextView
+import android.widget.Toast
 import androidx.annotation.RequiresApi
 import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.core.content.ContextCompat
@@ -21,18 +22,14 @@ import androidx.core.graphics.blue
 import androidx.core.graphics.green
 import androidx.core.graphics.red
 import androidx.core.math.MathUtils.clamp
-import androidx.security.crypto.EncryptedSharedPreferences
+import org.foxarmy.barcodescannerforemployees.*
-import androidx.security.crypto.MasterKeys
-import org.foxarmy.barcodescannerforemployees.R
 import org.foxarmy.barcodescannerforemployees.activities.FullscreenActivity
-import org.foxarmy.barcodescannerforemployees.calculateProductFreshness
+import org.foxarmy.barcodescannerforemployees.activities.MainActivity
 import org.foxarmy.barcodescannerforemployees.database.AbstractProductDAO
 import org.foxarmy.barcodescannerforemployees.database.CategoryDAO
 import org.foxarmy.barcodescannerforemployees.database.DBStorageController
 import org.foxarmy.barcodescannerforemployees.dataclasses.AbstractProduct
 import org.foxarmy.barcodescannerforemployees.dataclasses.Product
-import org.foxarmy.barcodescannerforemployees.getActivity
-import org.foxarmy.barcodescannerforemployees.getImageUri
 import java.io.File
 import java.text.DecimalFormat
 import java.text.SimpleDateFormat
@@ -44,6 +41,7 @@ class ProductView: LinearLayout {
     var isProductSelected = false
     private var activity: Activity
 
+    private lateinit var productLayout: ConstraintLayout
     private lateinit var productImageView: ImageView
     private lateinit var productNameTextView: TextView
     private lateinit var productNetWeightTextView: TextView
@@ -63,13 +61,7 @@ class ProductView: LinearLayout {
     constructor(context: Context, a: AttributeSet) : super(context, a) {
         activity = getActivity(context)!!
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(context)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "offline")!!)
         abstractProductDAO = AbstractProductDAO(dbHelper)
@@ -86,18 +78,13 @@ class ProductView: LinearLayout {
         val inflater: LayoutInflater = activity.layoutInflater
         inflater.inflate(R.layout.product_view, this)
 
-        sharedPreferences = EncryptedSharedPreferences.create(
+        sharedPreferences = getPreferences(context)
-            "sensitive",
-            MasterKeys.getOrCreate(MasterKeys.AES256_GCM_SPEC),
-            context,
-            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
-            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
-        )
 
         val dbHelper = DBStorageController(context, sharedPreferences.getString("currentGroup", "offline")!!)
         abstractProductDAO = AbstractProductDAO(dbHelper)
         categoryDAO = CategoryDAO(dbHelper)
 
+        productLayout = findViewById(R.id.productLayout)
         productImageView = findViewById(R.id.productPicture)
         productNameTextView = findViewById(R.id.productNameView)
         productNetWeightTextView = findViewById(R.id.productNetWeightView)
@@ -106,40 +93,124 @@ class ProductView: LinearLayout {
         productLifeSpan = findViewById(R.id.dateSpan)
         productFreshnessTextView = findViewById(R.id.freshnessPercentTextView)
 
-        findViewById<ConstraintLayout>(R.id.productLayout).setOnLongClickListener {
+        setUpClicks()
-            isProductSelected = !isProductSelected
-            updateStroke()
-            true
-        }
-
-        productImageView.setOnClickListener {
-            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
-            val extras = Bundle()
-            val abstractProduct = abstractProductDAO.findAbstractProductById(product.abstractProductId)
-            extras.putString("imagehash", abstractProduct!!.imageHash)
-            fullscreenIntent.putExtras(extras)
-            startActivity(context, fullscreenIntent, extras)
-        }
 
         update()
     }
 
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun setUpClicks() {
+        productLayout.setOnLongClickListener { onAnyLongClick() }
+        productImageView.setOnLongClickListener { onImageLongClick() }
+        productNameTextView.setOnLongClickListener { onNameLongClick() }
+        productNetWeightTextView.setOnLongClickListener { onAnyLongClick() }
+        productAmountTextView.setOnLongClickListener { onAnyLongClick() }
+        productCategoryView.setOnLongClickListener { onAnyLongClick() }
+        productLifeSpan.setOnLongClickListener { onAnyLongClick() }
+        productFreshnessTextView.setOnLongClickListener { onAnyLongClick() }
+
+        productLayout.setOnClickListener { onAnyClick() }
+        productImageView.setOnClickListener { onImageLongClick() }
+        productNameTextView.setOnClickListener { onNameLongClick() }
+        productNetWeightTextView.setOnClickListener { onAnyClick() }
+        productAmountTextView.setOnClickListener { onAnyClick() }
+        productCategoryView.setOnClickListener { onAnyClick() }
+        productLifeSpan.setOnClickListener { onAnyClick() }
+        productFreshnessTextView.setOnClickListener { onAnyClick() }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun onAnyClick(): Boolean {
+        if (activity !is MainActivity) return false
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            isProductSelected = !isProductSelected
+
+            if (isProductSelected) mainActivity.addSelection()
+            else mainActivity.removeSelection()
+
+            updateStroke()
+
+            return true
+        } else {
+            return false
+        }
+    }
+
+    @RequiresApi(Build.VERSION_CODES.O)
+    private fun onAnyLongClick(): Boolean {
+        if (activity !is MainActivity) return false
+        val mainActivity = activity as MainActivity
+
+        isProductSelected = !isProductSelected
+        updateStroke()
+
+        if (mainActivity.selectionMode) {
+            if (isProductSelected) mainActivity.addSelection()
+            else mainActivity.removeSelection()
+        } else {
+            mainActivity.addSelection()
+        }
+        return true
+
+    }
+
+    private fun onNameLongClick(): Boolean {
+        if (activity !is MainActivity) {
+            Toast.makeText(activity, productNameTextView.text, Toast.LENGTH_SHORT).show()
+            return true
+        }
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) return onAnyLongClick()
+        else Toast.makeText(activity, productNameTextView.text, Toast.LENGTH_SHORT).show()
+        return true
+    }
+
+    private fun onImageLongClick(): Boolean {
+        val abstractProduct = abstractProductDAO.findAbstractProductById(product.abstractProductId)
+
+        if (activity !is MainActivity) {
+            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
+            val extras = Bundle()
+            extras.putString("imagehash", abstractProduct!!.imageHash)
+            fullscreenIntent.putExtras(extras)
+            startActivity(context, fullscreenIntent, extras)
+            return true
+        }
+        val mainActivity = activity as MainActivity
+
+        if (mainActivity.selectionMode) {
+            return onAnyLongClick()
+        } else {
+            val fullscreenIntent = Intent(activity, FullscreenActivity::class.java)
+            val extras = Bundle()
+            extras.putString("imagehash", abstractProduct!!.imageHash)
+            fullscreenIntent.putExtras(extras)
+            startActivity(context, fullscreenIntent, extras)
+        }
+        return true
+    }
+
     @RequiresApi(Build.VERSION_CODES.O)
     fun update() {
-        val linkedAbstractProduct: AbstractProduct = abstractProductDAO.findAbstractProductById(product.abstractProductId) ?: return
+        val linkedAbstractProduct: AbstractProduct =
+            abstractProductDAO.findAbstractProductById(product.abstractProductId) ?: return
 
         val thumbnailsDir = File(activity.cacheDir, "thumbnails")
         thumbnailsDir.mkdirs()
         val pictureFile = File(thumbnailsDir, "${linkedAbstractProduct.imageHash}.webp")
         val imageUri = getImageUri(activity, pictureFile)
         productImageView.setImageURI(imageUri)
-//        productImageView.rotation = 90f
 
         productNameTextView.text = linkedAbstractProduct.name
         productNetWeightTextView.text = linkedAbstractProduct.netWeight.toString()
         productAmountTextView.text = product.amount.toString()
         productCategoryView.text = categoryDAO.getCategoryNameById(linkedAbstractProduct.category)
-        productLifeSpan.text = "${SimpleDateFormat("dd.MM.yyyy").format(Date(product.dateOfProduction*1000))}-${SimpleDateFormat("dd.MM.yyyy").format(Date(product.dateOfExpiry*1000))}"
+        productLifeSpan.text = "${SimpleDateFormat("dd.MM.yyyy").format(Date(product.dateOfProduction * 1000))}-${
+            SimpleDateFormat("dd.MM.yyyy").format(Date(product.dateOfExpiry * 1000))
+        }"
         productFreshnessTextView.text =
             if (product.freshness == Double.NEGATIVE_INFINITY || product.freshness == Double.POSITIVE_INFINITY || product.freshness < 0) {
                 context.getString(R.string.expired)
@@ -178,8 +249,10 @@ class ProductView: LinearLayout {
     }
 
     fun calculateFreshnessGradient(percentage: Double): Int {
-        val startColor = ContextCompat.getColor(context, if (percentage > 0.5) R.color.full_freshness else R.color.half_freshness)
+        val startColor =
-        val endColor = ContextCompat.getColor(context, if (percentage > 0.5) R.color.half_freshness else R.color.expired_freshness)
+            ContextCompat.getColor(context, if (percentage > 0.5) R.color.full_freshness else R.color.half_freshness)
+        val endColor =
+            ContextCompat.getColor(context, if (percentage > 0.5) R.color.half_freshness else R.color.expired_freshness)
 
         val gradientPosition = 1 - if (percentage > 0.5) (percentage - 0.5) * 2 else percentage * 2
 

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

@@ -8,7 +8,7 @@
     <androidx.constraintlayout.widget.ConstraintLayout
             android:layout_width="match_parent"
             android:layout_height="match_parent" android:id="@+id/productLayout" android:outlineProvider="bounds"
-            android:background="#00FFFEFE" android:clickable="true">
+            android:background="#00FFFEFE" android:clickable="true" android:translationZ="0sp">
         <ImageView
                 android:layout_width="match_parent"
                 android:layout_height="200dp" app:srcCompat="@android:drawable/ic_menu_gallery"