add an activity for managing favorite items

app/src/main/AndroidManifest.xml

@@ -28,6 +28,11 @@
             android:label="@string/about"
             android:parentActivityName=".activities.MainActivity"/>
 
+        <activity
+            android:name="com.simplemobiletools.filemanager.activities.FavoritesActivity"
+            android:label="@string/favorites"
+            android:parentActivityName=".activities.MainActivity"/>
+
         <activity
             android:name="com.simplemobiletools.commons.activities.LicenseActivity"
             android:label="@string/third_party_licences"

app/src/main/kotlin/com/simplemobiletools/filemanager/activities/FavoritesActivity.kt

@@ -0,0 +1,11 @@
+package com.simplemobiletools.filemanager.activities
+
+import android.os.Bundle
+import com.simplemobiletools.filemanager.R
+
+class FavoritesActivity : SimpleActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_favorites)
+    }
+}

app/src/main/kotlin/com/simplemobiletools/filemanager/activities/SettingsActivity.kt

@@ -1,5 +1,6 @@
 package com.simplemobiletools.filemanager.activities
 
+import android.content.Intent
 import android.os.Bundle
 import com.simplemobiletools.commons.extensions.updateTextColors
 import com.simplemobiletools.filemanager.R
@@ -16,6 +17,7 @@ class SettingsActivity : SimpleActivity() {
         super.onResume()
 
         setupCustomizeColors()
+        setupManageFavorites()
         setupShowHidden()
         updateTextColors(settings_holder)
     }
@@ -26,6 +28,12 @@ class SettingsActivity : SimpleActivity() {
         }
     }
 
+    private fun setupManageFavorites() {
+        settings_manage_favorites_holder.setOnClickListener {
+            startActivity(Intent(this, FavoritesActivity::class.java))
+        }
+    }
+
     private fun setupShowHidden() {
         settings_show_hidden.isChecked = config.showHidden
         settings_show_hidden_holder.setOnClickListener {

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

@@ -0,0 +1,29 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/favorites_scrollview"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <RelativeLayout
+        android:id="@+id/favorites_wrapper"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
+        <LinearLayout
+            android:id="@+id/favorites_holder"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:orientation="vertical"/>
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/favorites_placeholder"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:gravity="center_horizontal"
+            android:paddingLeft="@dimen/big_margin"
+            android:paddingRight="@dimen/big_margin"
+            android:paddingTop="@dimen/activity_margin"
+            android:visibility="gone"/>
+    </RelativeLayout>
+</ScrollView>

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

@@ -30,6 +30,25 @@
 
         </RelativeLayout>
 
+        <RelativeLayout
+            android:id="@+id/settings_manage_favorites_holder"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/medium_margin"
+            android:background="?attr/selectableItemBackground"
+            android:padding="@dimen/activity_margin">
+
+            <com.simplemobiletools.commons.views.MyTextView
+                android:id="@+id/settings_manage_favorites"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_centerVertical="true"
+                android:paddingLeft="@dimen/medium_margin"
+                android:paddingStart="@dimen/medium_margin"
+                android:text="@string/manage_favorites"/>
+
+        </RelativeLayout>
+
         <RelativeLayout
             android:id="@+id/settings_show_hidden_holder"
             android:layout_width="match_parent"