show a placeholder text when theres no favorite folders

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

@@ -2,6 +2,7 @@ package com.simplemobiletools.filemanager.activities
 
 import android.graphics.PorterDuff
 import android.os.Bundle
+import com.simplemobiletools.commons.extensions.beVisibleIf
 import com.simplemobiletools.filemanager.R
 import com.simplemobiletools.filemanager.extensions.config
 import kotlinx.android.synthetic.main.activity_favorites.*
@@ -16,18 +17,20 @@ class FavoritesActivity : SimpleActivity() {
 
     private fun updateFavorites() {
         favorites_holder.removeAllViews()
-        val folders = config.favorites
+        val favorites = config.favorites
+        favorites_placeholder.beVisibleIf(favorites.isEmpty())
+        favorites_placeholder.setTextColor(config.textColor)
 
-        for (folder in folders) {
+        for (favorite in favorites) {
             layoutInflater.inflate(R.layout.item_favorite, null, false).apply {
                 favorite_title.apply {
-                    text = folder
+                    text = favorite
                     setTextColor(config.textColor)
                 }
                 favorite_icon.apply {
                     setColorFilter(config.textColor, PorterDuff.Mode.SRC_IN)
                     setOnClickListener {
-                        config.removeFavorite(folder)
+                        config.removeFavorite(favorite)
                         updateFavorites()
                     }
                 }

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

@@ -24,6 +24,7 @@
             android:paddingLeft="@dimen/big_margin"
             android:paddingRight="@dimen/big_margin"
             android:paddingTop="@dimen/activity_margin"
+            android:text="@string/favorites_activity_placeholder"
             android:visibility="gone"/>
     </RelativeLayout>
 </ScrollView>

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

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Remove from favorites</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->

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

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Remove from favorites</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->

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

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Enlever des favoris</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->

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

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Remove from favorites</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->

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

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Remove from favorites</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->

app/src/main/res/values-pt-rPT/strings.xml

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Remover dos favoritos</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->

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

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Убрать из избранного</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->

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

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Ta bort från favoriter</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->

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

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Favorilerden kaldır</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->

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

@@ -14,6 +14,7 @@
     <string name="remove_from_favorites">Remove from favorites</string>
     <string name="manage_favorites">Manage favorites</string>
     <string name="go_to_favorite">Go to favorite</string>
+    <string name="favorites_activity_placeholder">You can add frequently used folders to favorites for easy access from anywhere.</string>
 
     <!-- Strings displayed only on Google Playstore. Optional, but good to have -->
     <!-- Short description has to have less than 80 chars -->