add about us dialog to settings page

app/src/main/java/divyansh/tech/wallup/home/settings/SettingsFragment.kt

@@ -4,8 +4,10 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
+import androidx.appcompat.app.AlertDialog
 import androidx.fragment.app.Fragment
 import dagger.hilt.android.AndroidEntryPoint
+import divyansh.tech.wallup.R
 import divyansh.tech.wallup.databinding.FragmentSettingsBinding
 
 @AndroidEntryPoint
@@ -20,4 +22,21 @@ class SettingsFragment: Fragment() {
         _binding = FragmentSettingsBinding.inflate(inflater, container, false)
         return _binding.root
     }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        setupAboutUsButton()
+    }
+
+    private fun setupAboutUsButton() {
+        _binding.aboutUsButton.setOnClickListener {
+            AlertDialog.Builder(requireContext())
+                .setTitle(R.string.title_about_us)
+                .setMessage(R.string.message_about_us)
+                .setPositiveButton(R.string.ok_button) { dialog, _ ->
+                    dialog.dismiss()
+                }
+                .show()
+        }
+    }
 }

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

@@ -1,16 +1,31 @@
 <?xml version="1.0" encoding="utf-8"?>
-<layout>
-    <data/>
+<layout xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <data />
+
     <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
         android:layout_width="match_parent"
         android:layout_height="match_parent">
 
         <TextView
-            android:layout_width="match_parent"
-            android:layout_height="match_parent"
+            android:id="@+id/label_settings"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
             android:text="SETTINGS"
-            android:gravity="center"
-            />
+            app:layout_constraintBottom_toTopOf="@id/about_us_button"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <Button
+            android:id="@+id/about_us_button"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/title_about_us"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@id/label_settings" />
 
     </androidx.constraintlayout.widget.ConstraintLayout>
 </layout>

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

@@ -4,4 +4,13 @@
     <string name="set_as_wallpaper">Set as wallpaper</string>
     <string name="search_wallpapers">Search Wallpapers</string>
     <string name="no_results_for_your_search">No Results for your search</string>
+    <string name="title_about_us">About Us</string>
+    <string name="message_about_us">Why a wallpaper app ? Here\'s why:\n\n\* There are already a lot of wallpaper apps,
+        but they are optimized to show you the wallpapers only for your phone, i.e. they will only
+        find the wallpapers of the screen resolution of your phone. So to download higher quality wallpapers you\'d
+        anyhow need to download from your browser.\n\n\* Most of
+        the wallpaper apps show you the wallpaper which are curated by themselves or using any API. This app parses
+        the a lot of resources to provide you with the highest quality unique wallpapers.\n\n\* There are no ads.
+    </string>
+    <string name="ok_button">OK</string>
 </resources>