fix #264, add a "Show Hidden" button at the copy destination

app/src/main/kotlin/com/simplemobiletools/gallery/dialogs/PickDirectoryDialog.kt

@@ -4,10 +4,7 @@ import androidx.appcompat.app.AlertDialog
 import androidx.recyclerview.widget.RecyclerView
 import com.simplemobiletools.commons.activities.BaseSimpleActivity
 import com.simplemobiletools.commons.dialogs.FilePickerDialog
-import com.simplemobiletools.commons.extensions.beGoneIf
+import com.simplemobiletools.commons.extensions.*
-import com.simplemobiletools.commons.extensions.beVisibleIf
-import com.simplemobiletools.commons.extensions.setupDialogStuff
-import com.simplemobiletools.commons.extensions.toast
 import com.simplemobiletools.commons.views.MyGridLayoutManager
 import com.simplemobiletools.gallery.R
 import com.simplemobiletools.gallery.adapters.DirectoryAdapter
@@ -36,10 +33,22 @@ class PickDirectoryDialog(val activity: BaseSimpleActivity, val sourcePath: Stri
                 .setNegativeButton(R.string.cancel, null)
                 .setNeutralButton(R.string.other_folder) { dialogInterface, i -> showOtherFolder() }
                 .create().apply {
-                    activity.setupDialogStuff(view, this, R.string.select_destination)
+                    activity.setupDialogStuff(view, this, R.string.select_destination) {
+                        view.directories_show_hidden.beVisibleIf(!context.config.shouldShowHidden)
+                        view.directories_show_hidden.setOnClickListener {
+                            activity.handleHiddenFolderPasswordProtection {
+                                view.directories_show_hidden.beGone()
+                                fetchDirectories(true)
+                            }
+                        }
+                    }
                 }
 
-        activity.getCachedDirectories {
+        fetchDirectories(false)
+    }
+
+    private fun fetchDirectories(forceShowHidden: Boolean) {
+        activity.getCachedDirectories(forceShowHidden = forceShowHidden) {
             if (it.isNotEmpty()) {
                 activity.runOnUiThread {
                     gotDirectories(activity.addTempFolderIfNeeded(it))

app/src/main/kotlin/com/simplemobiletools/gallery/extensions/Context.kt

@@ -334,7 +334,7 @@ fun Context.loadSVG(path: String, target: MySquareImageView, cropThumbnails: Boo
             .into(target)
 }
 
-fun Context.getCachedDirectories(getVideosOnly: Boolean = false, getImagesOnly: Boolean = false, directoryDao: DirectoryDao = galleryDB.DirectoryDao(), callback: (ArrayList<Directory>) -> Unit) {
+fun Context.getCachedDirectories(getVideosOnly: Boolean = false, getImagesOnly: Boolean = false, directoryDao: DirectoryDao = galleryDB.DirectoryDao(), forceShowHidden: Boolean = false, callback: (ArrayList<Directory>) -> Unit) {
     Thread {
         val directories = try {
             directoryDao.getAll() as ArrayList<Directory>
@@ -346,7 +346,7 @@ fun Context.getCachedDirectories(getVideosOnly: Boolean = false, getImagesOnly:
             directories.removeAll { it.isRecycleBin() }
         }
 
-        val shouldShowHidden = config.shouldShowHidden
+        val shouldShowHidden = config.shouldShowHidden || forceShowHidden
         val excludedPaths = config.excludedFolders
         val includedPaths = config.includedFolders
         var filteredDirectories = directories.filter { it.path.shouldFolderBeVisible(excludedPaths, includedPaths, shouldShowHidden) } as ArrayList<Directory>

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

@@ -1,4 +1,11 @@
 <?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/directories_holder"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
     <RelativeLayout
         xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:app="http://schemas.android.com/apk/res-auto"
@@ -21,8 +28,8 @@
             android:layout_height="match_parent"
             android:layout_alignParentEnd="true"
             android:layout_alignParentRight="true"
-        android:paddingLeft="@dimen/normal_margin"
+            android:paddingStart="@dimen/normal_margin"
-        android:paddingStart="@dimen/normal_margin">
+            android:paddingLeft="@dimen/normal_margin">
 
             <include layout="@layout/fastscroller_handle_vertical"/>
 
@@ -32,12 +39,23 @@
             android:id="@+id/directories_horizontal_fastscroller"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-        android:layout_alignParentBottom="true"
-        android:layout_alignParentLeft="true"
             android:layout_alignParentStart="true"
+            android:layout_alignParentLeft="true"
+            android:layout_alignParentBottom="true"
             android:paddingTop="@dimen/normal_margin">
 
             <include layout="@layout/fastscroller_handle_horizontal"/>
 
         </com.simplemobiletools.commons.views.FastScroller>
     </RelativeLayout>
+
+    <com.simplemobiletools.commons.views.MyFloatingActionButton
+        android:id="@+id/directories_show_hidden"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom|end"
+        android:layout_margin="@dimen/activity_margin"
+        android:src="@drawable/ic_unhide"
+        android:visibility="gone"/>
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>