Create colorToolbarDark and colorStatusBar to color the toolbar and the status bar in the night mode theme and add the necessary methods to use them in the app accordingly.

app/src/main/java/cy/agorise/bitsybitshareswallet/fragments/HomeFragment.kt

@@ -23,20 +23,21 @@ class HomeFragment : Fragment() {
 
     private lateinit var mUserAccountViewModel: UserAccountViewModel
 
-    override fun onCreateView(
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        inflater: LayoutInflater, container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View? {
         setHasOptionsMenu(true)
 
+        val nightMode = PreferenceManager.getDefaultSharedPreferences(context)
+            .getBoolean(Constants.KEY_NIGHT_MODE_ACTIVATED, false)
+
         // Sets the toolbar background color to primaryColor and forces shows the Bitsy icon to the left
         val toolbar: Toolbar? = activity?.findViewById(R.id.toolbar)
         toolbar?.navigationIcon = resources.getDrawable(R.drawable.ic_bitsy_logo_2, null)
-        toolbar?.setBackgroundResource(R.color.colorPrimary)
+        toolbar?.setBackgroundResource(if (!nightMode) R.color.colorPrimary else R.color.colorToolbarDark)
 
         // Sets the status bar background color to a primaryColorDark
         val window = activity?.window
-        window?.statusBarColor = ContextCompat.getColor(context!!, R.color.colorPrimaryDark)
+        window?.statusBarColor = ContextCompat.getColor(context!!,
+            if (!nightMode) R.color.colorPrimaryDark else R.color.colorStatusBarDark)
 
         return inflater.inflate(R.layout.fragment_home, container, false)
     }

app/src/main/java/cy/agorise/bitsybitshareswallet/fragments/ReceiveTransactionFragment.kt

@@ -95,13 +95,17 @@ class ReceiveTransactionFragment : Fragment(), ServiceConnection {
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         setHasOptionsMenu(true)
 
+        val nightMode = PreferenceManager.getDefaultSharedPreferences(context)
+            .getBoolean(Constants.KEY_NIGHT_MODE_ACTIVATED, false)
+
         // Sets the toolbar background color to green
         val toolbar: Toolbar? = activity?.findViewById(R.id.toolbar)
-        toolbar?.setBackgroundResource(R.color.colorReceive)
+        toolbar?.setBackgroundResource(if (!nightMode) R.color.colorReceive else R.color.colorToolbarDark)
 
         // Sets the status bar background color to a dark green
         val window = activity?.window
-        window?.statusBarColor = ContextCompat.getColor(context!!, R.color.colorReceiveDark)
+        window?.statusBarColor = ContextCompat.getColor(context!!,
+            if (!nightMode) R.color.colorReceiveDark else R.color.colorStatusBarDark)
 
         return inflater.inflate(R.layout.fragment_receive_transaction, container, false)
     }

app/src/main/java/cy/agorise/bitsybitshareswallet/fragments/SendTransactionFragment.kt

@@ -111,13 +111,17 @@ class SendTransactionFragment : Fragment(), ZXingScannerView.ResultHandler, Serv
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         setHasOptionsMenu(true)
 
+        val nightMode = PreferenceManager.getDefaultSharedPreferences(context)
+            .getBoolean(Constants.KEY_NIGHT_MODE_ACTIVATED, false)
+
         // Sets the toolbar background color to red
         val toolbar: Toolbar? = activity?.findViewById(R.id.toolbar)
-        toolbar?.setBackgroundResource(R.color.colorSend)
+        toolbar?.setBackgroundResource(if (!nightMode) R.color.colorSend else R.color.colorToolbarDark)
 
         // Sets the status bar background color to a dark red
         val window = activity?.window
-        window?.statusBarColor = ContextCompat.getColor(context!!, R.color.colorSendDark)
+        window?.statusBarColor = ContextCompat.getColor(context!!,
+            if (!nightMode) R.color.colorSendDark else R.color.colorStatusBarDark)
 
         return inflater.inflate(R.layout.fragment_send_transaction, container, false)
     }

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

@@ -6,6 +6,8 @@
 
     <!-- Dark theme -->
     <color name="colorBackgroundFloating">#424242</color>
+    <color name="colorToolbarDark">#424242</color>
+    <color name="colorStatusBarDark">#212121</color>
 
     <color name="black">#000</color>
     <color name="gray">#888</color>
@@ -17,6 +19,5 @@
     <color name="colorReceiveDark">#1B5E20</color>
     <color name="colorSend">#D32F2F</color>
     <color name="colorSendDark">#B71C1C</color>
-    <color name="errorRed">#F44336</color>
     <color name="semiTransparent">#2888</color>
 </resources>