Merge pull request #98350 from syntaxerror247/android-native-filepicker

[Android] Implement native file picker support

doc/classes/DisplayServer.xml

@@ -139,11 +139,12 @@
 			<description>
 				Displays OS native dialog for selecting files or directories in the file system.
 				Each filter string in the [param filters] array should be formatted like this: [code]*.txt,*.doc;Text Files[/code]. The description text of the filter is optional and can be omitted. See also [member FileDialog.filters].
-				Callbacks have the following arguments: [code]status: bool, selected_paths: PackedStringArray, selected_filter_index: int[/code].
-				[b]Note:[/b] This method is implemented if the display server has the [constant FEATURE_NATIVE_DIALOG_FILE] feature. Supported platforms include Linux (X11/Wayland), Windows, and macOS.
+				Callbacks have the following arguments: [code]status: bool, selected_paths: PackedStringArray, selected_filter_index: int[/code]. [b]On Android,[/b] callback argument [code]selected_filter_index[/code] is always zero.
+				[b]Note:[/b] This method is implemented if the display server has the [constant FEATURE_NATIVE_DIALOG_FILE] feature. Supported platforms include Linux (X11/Wayland), Windows, macOS, and Android.
 				[b]Note:[/b] [param current_directory] might be ignored.
-				[b]Note:[/b] On Linux, [param show_hidden] is ignored.
-				[b]Note:[/b] On macOS, native file dialogs have no title.
+				[b]Note:[/b] On Android, the filter strings in the [param filters] array should be specified using MIME types, for example:[code]image/png, image/jpeg"[/code]. Additionally, the [param mode] [constant FILE_DIALOG_MODE_OPEN_ANY] is not supported on Android.
+				[b]Note:[/b] On Android and Linux, [param show_hidden] is ignored.
+				[b]Note:[/b] On Android and macOS, native file dialogs have no title.
 				[b]Note:[/b] On macOS, sandboxed apps will save security-scoped bookmarks to retain access to the opened folders across multiple sessions. Use [method OS.get_granted_permissions] to get a list of saved bookmarks.
 			</description>
 		</method>
@@ -166,7 +167,7 @@
 				- [code]"values"[/code] - [PackedStringArray] of values. If empty, boolean option (check box) is used.
 				- [code]"default"[/code] - default selected option index ([int]) or default boolean value ([bool]).
 				Callbacks have the following arguments: [code]status: bool, selected_paths: PackedStringArray, selected_filter_index: int, selected_option: Dictionary[/code].
-				[b]Note:[/b] This method is implemented if the display server has the [constant FEATURE_NATIVE_DIALOG_FILE] feature. Supported platforms include Linux (X11/Wayland), Windows, and macOS.
+				[b]Note:[/b] This method is implemented if the display server has the [constant FEATURE_NATIVE_DIALOG_FILE_EXTRA] feature. Supported platforms include Linux (X11/Wayland), Windows, and macOS.
 				[b]Note:[/b] [param current_directory] might be ignored.
 				[b]Note:[/b] On Linux (X11), [param show_hidden] is ignored.
 				[b]Note:[/b] On macOS, native file dialogs have no title.
@@ -1889,7 +1890,10 @@
 			Display server supports spawning text input dialogs using the operating system's native look-and-feel. See [method dialog_input_text]. [b]Windows, macOS[/b]
 		</constant>
 		<constant name="FEATURE_NATIVE_DIALOG_FILE" value="25" enum="Feature">
-			Display server supports spawning dialogs for selecting files or directories using the operating system's native look-and-feel. See [method file_dialog_show] and [method file_dialog_with_options_show]. [b]Windows, macOS, Linux (X11/Wayland)[/b]
+			Display server supports spawning dialogs for selecting files or directories using the operating system's native look-and-feel. See [method file_dialog_show]. [b]Windows, macOS, Linux (X11/Wayland), Android[/b]
+		</constant>
+		<constant name="FEATURE_NATIVE_DIALOG_FILE_EXTRA" value="26" enum="Feature">
+			The display server supports all features of [constant FEATURE_NATIVE_DIALOG_FILE], with the added functionality of Options and native dialog file access to [code]res://[/code] and [code]user://[/code] paths. See [method file_dialog_show] and [method file_dialog_with_options_show]. [b]Windows, macOS, Linux (X11/Wayland)[/b]
 		</constant>
 		<constant name="MOUSE_MODE_VISIBLE" value="0" enum="MouseMode">
 			Makes the mouse cursor visible if it is hidden.

doc/classes/FileDialog.xml

@@ -146,6 +146,7 @@
 		</member>
 		<member name="filters" type="PackedStringArray" setter="set_filters" getter="get_filters" default="PackedStringArray()">
 			The available file type filters. Each filter string in the array should be formatted like this: [code]*.txt,*.doc;Text Files[/code]. The description text of the filter is optional and can be omitted.
+			[b]Note:[/b] For android native dialog, MIME types are used like this: [code]image/*, application/pdf[/code].
 		</member>
 		<member name="mode_overrides_title" type="bool" setter="set_mode_overrides_title" getter="is_mode_overriding_title" default="true">
 			If [code]true[/code], changing the [member file_mode] property will set the window title accordingly (e.g. setting [member file_mode] to [constant FILE_MODE_OPEN_FILE] will change the window title to "Open a File").
@@ -159,12 +160,13 @@
 		</member>
 		<member name="show_hidden_files" type="bool" setter="set_show_hidden_files" getter="is_showing_hidden_files" default="false">
 			If [code]true[/code], the dialog will show hidden files.
-			[b]Note:[/b] This property is ignored by native file dialogs on Linux.
+			[b]Note:[/b] This property is ignored by native file dialogs on Android and Linux.
 		</member>
 		<member name="size" type="Vector2i" setter="set_size" getter="get_size" overrides="Window" default="Vector2i(640, 360)" />
 		<member name="title" type="String" setter="set_title" getter="get_title" overrides="Window" default="&quot;Save a File&quot;" />
 		<member name="use_native_dialog" type="bool" setter="set_use_native_dialog" getter="get_use_native_dialog" default="false">
 			If [code]true[/code], and if supported by the current [DisplayServer], OS native dialog will be used instead of custom one.
+			[b]Note:[/b] On Android, it is only supported when using [constant ACCESS_FILESYSTEM]. For access mode [constant ACCESS_RESOURCES] and [constant ACCESS_USERDATA], the system will fall back to custom FileDialog.
 			[b]Note:[/b] On Linux and macOS, sandboxed apps always use native dialogs to access the host file system.
 			[b]Note:[/b] On macOS, sandboxed apps will save security-scoped bookmarks to retain access to the opened folders across multiple sessions. Use [method OS.get_granted_permissions] to get a list of saved bookmarks.
 			[b]Note:[/b] Native dialogs are isolated from the base process, file dialog properties can't be modified once the dialog is shown.

platform/android/display_server_android.cpp

@@ -72,7 +72,8 @@ bool DisplayServerAndroid::has_feature(Feature p_feature) const {
 		//case FEATURE_MOUSE_WARP:
 		//case FEATURE_NATIVE_DIALOG:
 		case FEATURE_NATIVE_DIALOG_INPUT:
-		//case FEATURE_NATIVE_DIALOG_FILE:
+		case FEATURE_NATIVE_DIALOG_FILE:
+		//case FEATURE_NATIVE_DIALOG_FILE_EXTRA:
 		//case FEATURE_NATIVE_ICON:
 		//case FEATURE_WINDOW_TRANSPARENCY:
 		case FEATURE_CLIPBOARD:
@@ -189,6 +190,19 @@ void DisplayServerAndroid::emit_input_dialog_callback(String p_text) {
 	}
 }
 
+Error DisplayServerAndroid::file_dialog_show(const String &p_title, const String &p_current_directory, const String &p_filename, bool p_show_hidden, FileDialogMode p_mode, const Vector<String> &p_filters, const Callable &p_callback) {
+	GodotJavaWrapper *godot_java = OS_Android::get_singleton()->get_godot_java();
+	ERR_FAIL_NULL_V(godot_java, FAILED);
+	file_picker_callback = p_callback;
+	return godot_java->show_file_picker(p_current_directory, p_filename, p_mode, p_filters);
+}
+
+void DisplayServerAndroid::emit_file_picker_callback(bool p_ok, const Vector<String> &p_selected_paths) {
+	if (file_picker_callback.is_valid()) {
+		file_picker_callback.call_deferred(p_ok, p_selected_paths, 0);
+	}
+}
+
 TypedArray<Rect2> DisplayServerAndroid::get_display_cutouts() const {
 	GodotIOJavaWrapper *godot_io_java = OS_Android::get_singleton()->get_godot_io_java();
 	ERR_FAIL_NULL_V(godot_io_java, Array());

platform/android/display_server_android.h

@@ -88,6 +88,7 @@ class DisplayServerAndroid : public DisplayServer {
 	Callable system_theme_changed;
 
 	Callable input_dialog_callback;
+	Callable file_picker_callback;
 
 	void _window_callback(const Callable &p_callable, const Variant &p_arg, bool p_deferred = false) const;
 
@@ -121,6 +122,9 @@ public:
 	virtual Error dialog_input_text(String p_title, String p_description, String p_partial, const Callable &p_callback) override;
 	void emit_input_dialog_callback(String p_text);
 
+	virtual Error file_dialog_show(const String &p_title, const String &p_current_directory, const String &p_filename, bool p_show_hidden, const FileDialogMode p_mode, const Vector<String> &p_filters, const Callable &p_callback) override;
+	void emit_file_picker_callback(bool p_ok, const Vector<String> &p_selected_paths);
+
 	virtual TypedArray<Rect2> get_display_cutouts() const override;
 	virtual Rect2i get_display_safe_area() const override;
 

platform/android/java/lib/src/org/godotengine/godot/Godot.kt

@@ -57,6 +57,7 @@ import com.google.android.vending.expansion.downloader.*
 import org.godotengine.godot.error.Error
 import org.godotengine.godot.input.GodotEditText
 import org.godotengine.godot.input.GodotInputHandler
+import org.godotengine.godot.io.FilePicker
 import org.godotengine.godot.io.directory.DirectoryAccessHandler
 import org.godotengine.godot.io.file.FileAccessHandler
 import org.godotengine.godot.plugin.AndroidRuntimePlugin
@@ -677,6 +678,9 @@ class Godot(private val context: Context) {
 		for (plugin in pluginRegistry.allPlugins) {
 			plugin.onMainActivityResult(requestCode, resultCode, data)
 		}
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+			FilePicker.handleActivityResult(context, requestCode, resultCode, data)
+		}
 	}
 
 	/**
@@ -890,6 +894,13 @@ class Godot(private val context: Context) {
 		mClipboard.setPrimaryClip(clip)
 	}
 
+	@Keep
+	private fun showFilePicker(currentDirectory: String, filename: String, fileMode: Int, filters: Array<String>) {
+		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
+			FilePicker.showFilePicker(context, getActivity(), currentDirectory, filename, fileMode, filters)
+		}
+	}
+
 	/**
 	 * Popup a dialog to input text.
 	 */

platform/android/java/lib/src/org/godotengine/godot/GodotLib.java

@@ -229,6 +229,11 @@ public class GodotLib {
 	 */
 	public static native void inputDialogCallback(String p_text);
 
+	/**
+	 * Invoked on the file picker closed.
+	 */
+	public static native void filePickerCallback(boolean p_ok, String[] p_selected_paths);
+
 	/**
 	 * Invoked on the GL thread to configure the height of the virtual keyboard.
 	 */

platform/android/java/lib/src/org/godotengine/godot/io/FilePicker.kt

@@ -0,0 +1,160 @@
+/**************************************************************************/
+/*  FilePicker.kt                                                         */
+/**************************************************************************/
+/*                         This file is part of:                          */
+/*                             GODOT ENGINE                               */
+/*                        https://godotengine.org                         */
+/**************************************************************************/
+/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
+/*                                                                        */
+/* Permission is hereby granted, free of charge, to any person obtaining  */
+/* a copy of this software and associated documentation files (the        */
+/* "Software"), to deal in the Software without restriction, including    */
+/* without limitation the rights to use, copy, modify, merge, publish,    */
+/* distribute, sublicense, and/or sell copies of the Software, and to     */
+/* permit persons to whom the Software is furnished to do so, subject to  */
+/* the following conditions:                                              */
+/*                                                                        */
+/* The above copyright notice and this permission notice shall be         */
+/* included in all copies or substantial portions of the Software.        */
+/*                                                                        */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,        */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF     */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY   */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,   */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE      */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                 */
+/**************************************************************************/
+
+package org.godotengine.godot.io
+
+import android.app.Activity
+import android.content.Context
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import android.provider.DocumentsContract
+import android.util.Log
+import androidx.annotation.RequiresApi
+import org.godotengine.godot.GodotLib
+import org.godotengine.godot.io.file.MediaStoreData
+
+/**
+ * Utility class for managing file selection and file picker activities.
+ *
+ * It provides methods to launch a file picker and handle the result, supporting various file modes,
+ * including opening files, directories, and saving files.
+ */
+internal class FilePicker {
+	companion object {
+		private const val FILE_PICKER_REQUEST = 1000
+		private val TAG = FilePicker::class.java.simpleName
+
+		// Constants for fileMode values
+		private const val FILE_MODE_OPEN_FILE = 0
+		private const val FILE_MODE_OPEN_FILES = 1
+		private const val FILE_MODE_OPEN_DIR = 2
+		private const val FILE_MODE_OPEN_ANY = 3
+		private const val FILE_MODE_SAVE_FILE = 4
+
+		/**
+		 * Handles the result from a file picker activity and processes the selected file(s) or directory.
+		 *
+		 * @param context The context from which the file picker was launched.
+		 * @param requestCode The request code used when starting the file picker activity.
+		 * @param resultCode The result code returned by the activity.
+		 * @param data The intent data containing the selected file(s) or directory.
+		 */
+		@RequiresApi(Build.VERSION_CODES.Q)
+		fun handleActivityResult(context: Context, requestCode: Int, resultCode: Int, data: Intent?) {
+			if (requestCode == FILE_PICKER_REQUEST) {
+				if (resultCode == Activity.RESULT_CANCELED) {
+					Log.d(TAG, "File picker canceled")
+					GodotLib.filePickerCallback(false, emptyArray())
+					return
+				}
+				if (resultCode == Activity.RESULT_OK) {
+					val selectedPaths: MutableList<String> = mutableListOf()
+					// Handle multiple file selection.
+					val clipData = data?.clipData
+					if (clipData != null) {
+						for (i in 0 until clipData.itemCount) {
+							val uri = clipData.getItemAt(i).uri
+							uri?.let {
+								val filepath = MediaStoreData.getFilePathFromUri(context, uri)
+								if (filepath != null) {
+									selectedPaths.add(filepath)
+								} else {
+									Log.d(TAG, "null filepath URI: $it")
+								}
+							}
+						}
+					} else {
+						val uri: Uri? = data?.data
+						uri?.let {
+							val filepath = MediaStoreData.getFilePathFromUri(context, uri)
+							if (filepath != null) {
+								selectedPaths.add(filepath)
+							} else {
+								Log.d(TAG, "null filepath URI: $it")
+							}
+						}
+					}
+
+					if (selectedPaths.isNotEmpty()) {
+						GodotLib.filePickerCallback(true, selectedPaths.toTypedArray())
+					} else {
+						GodotLib.filePickerCallback(false, emptyArray())
+					}
+				}
+			}
+		}
+
+		/**
+		 * Launches a file picker activity with specified settings based on the mode, initial directory,
+		 * file type filters, and other parameters.
+		 *
+		 * @param context The context from which to start the file picker.
+		 * @param activity The activity instance used to initiate the picker. Required for activity results.
+		 * @param currentDirectory The directory path to start the file picker in.
+		 * @param filename The name of the file when using save mode.
+		 * @param fileMode The mode to operate in, specifying open, save, or directory select.
+		 * @param filters Array of MIME types to filter file selection.
+		 */
+		@RequiresApi(Build.VERSION_CODES.Q)
+		fun showFilePicker(context: Context, activity: Activity?, currentDirectory: String, filename: String, fileMode: Int, filters: Array<String>) {
+			val intent = when (fileMode) {
+				FILE_MODE_OPEN_DIR -> Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
+				FILE_MODE_SAVE_FILE -> Intent(Intent.ACTION_CREATE_DOCUMENT)
+				else -> Intent(Intent.ACTION_OPEN_DOCUMENT)
+			}
+			val initialDirectory = MediaStoreData.getUriFromDirectoryPath(context, currentDirectory)
+			if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q && initialDirectory != null) {
+				intent.putExtra(DocumentsContract.EXTRA_INITIAL_URI, initialDirectory)
+			} else {
+				Log.d(TAG, "Error cannot set initial directory")
+			}
+			if (fileMode == FILE_MODE_OPEN_FILES) {
+				intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true) // Set multi select for FILE_MODE_OPEN_FILES
+			} else if (fileMode == FILE_MODE_SAVE_FILE) {
+				intent.putExtra(Intent.EXTRA_TITLE, filename) // Set filename for FILE_MODE_SAVE_FILE
+			}
+			// ACTION_OPEN_DOCUMENT_TREE does not support intent type
+			if (fileMode != FILE_MODE_OPEN_DIR) {
+				intent.type = "*/*"
+				if (filters.isNotEmpty()) {
+					if (filters.size == 1) {
+						intent.type = filters[0]
+					} else {
+						intent.putExtra(Intent.EXTRA_MIME_TYPES, filters)
+					}
+				}
+				intent.addCategory(Intent.CATEGORY_OPENABLE)
+			}
+			intent.putExtra(Intent.EXTRA_LOCAL_ONLY, true)
+			activity?.startActivityForResult(intent, FILE_PICKER_REQUEST)
+		}
+	}
+}

platform/android/java/lib/src/org/godotengine/godot/io/file/MediaStoreData.kt

@@ -38,6 +38,7 @@ import android.net.Uri
 import android.os.Build
 import android.os.Environment
 import android.provider.MediaStore
+import android.util.Log
 import androidx.annotation.RequiresApi
 
 import java.io.File
@@ -46,6 +47,7 @@ import java.io.FileNotFoundException
 import java.io.FileOutputStream
 import java.nio.channels.FileChannel
 
+
 /**
  * Implementation of [DataAccess] which handles access and interactions with file and data
  * under scoped storage via the MediaStore API.
@@ -81,6 +83,10 @@ internal class MediaStoreData(context: Context, filePath: String, accessFlag: Fi
 		private const val SELECTION_BY_PATH = "${MediaStore.Files.FileColumns.DISPLAY_NAME} = ? " +
 			" AND ${MediaStore.Files.FileColumns.RELATIVE_PATH} = ?"
 
+		private const val AUTHORITY_MEDIA_DOCUMENTS = "com.android.providers.media.documents"
+		private const val AUTHORITY_EXTERNAL_STORAGE_DOCUMENTS = "com.android.externalstorage.documents"
+		private const val AUTHORITY_DOWNLOADS_DOCUMENTS = "com.android.providers.downloads.documents"
+
 		private fun getSelectionByPathArguments(path: String): Array<String> {
 			return arrayOf(getMediaStoreDisplayName(path), getMediaStoreRelativePath(path))
 		}
@@ -230,6 +236,72 @@ internal class MediaStoreData(context: Context, filePath: String, accessFlag: Fi
 			)
 			return updated > 0
 		}
+
+		fun getUriFromDirectoryPath(context: Context, directoryPath: String): Uri? {
+			if (!directoryExists(directoryPath)) {
+				return null
+			}
+			// Check if the path is under external storage.
+			val externalStorageRoot = Environment.getExternalStorageDirectory().absolutePath
+			if (directoryPath.startsWith(externalStorageRoot)) {
+				val relativePath = directoryPath.replaceFirst(externalStorageRoot, "").trim('/')
+				val uri = Uri.Builder()
+					.scheme("content")
+					.authority(AUTHORITY_EXTERNAL_STORAGE_DOCUMENTS)
+					.appendPath("document")
+					.appendPath("primary:$relativePath")
+					.build()
+				return uri
+			}
+			return null
+		}
+
+		fun getFilePathFromUri(context: Context, uri: Uri): String? {
+			// Converts content uri to filepath.
+			val id = getIdFromUri(uri) ?: return null
+
+			if (uri.authority == AUTHORITY_EXTERNAL_STORAGE_DOCUMENTS) {
+				val split = id.split(":")
+				val fileName = split.last()
+				val relativePath = split.dropLast(1).joinToString("/")
+				val fullPath = File(Environment.getExternalStorageDirectory(), "$relativePath/$fileName").absolutePath
+				return fullPath
+			} else {
+				val id = id.toLongOrNull() ?: return null
+				val dataItems = queryById(context, id)
+				return if (dataItems.isNotEmpty()) {
+					val dataItem = dataItems[0]
+					File(Environment.getExternalStorageDirectory(), File(dataItem.relativePath, dataItem.displayName).toString()).absolutePath
+				} else {
+					null
+				}
+			}
+		}
+
+		private fun getIdFromUri(uri: Uri): String? {
+			return try {
+				if (uri.authority == AUTHORITY_EXTERNAL_STORAGE_DOCUMENTS || uri.authority == AUTHORITY_MEDIA_DOCUMENTS || uri.authority == AUTHORITY_DOWNLOADS_DOCUMENTS) {
+					val documentId = uri.lastPathSegment ?: throw IllegalArgumentException("Invalid URI: $uri")
+					documentId.substringAfter(":")
+				} else {
+					throw IllegalArgumentException("Unsupported URI format: $uri")
+				}
+			} catch (e: Exception) {
+				Log.d(TAG, "Failed to parse ID from URI: $uri", e)
+				null
+			}
+		}
+
+		private fun directoryExists(path: String): Boolean {
+			return try {
+				val file = File(path)
+				file.isDirectory && file.exists()
+			} catch (e: SecurityException) {
+				Log.d(TAG, "Failed to check directoryExists: $path", e)
+				false
+			}
+		}
+
 	}
 
 	private val id: Long

platform/android/java_godot_lib_jni.cpp

@@ -548,6 +548,22 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_inputDialogCallback(J
 	}
 }
 
+JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_filePickerCallback(JNIEnv *env, jclass clazz, jboolean p_ok, jobjectArray p_selected_paths) {
+	DisplayServerAndroid *ds = (DisplayServerAndroid *)DisplayServer::get_singleton();
+	if (ds) {
+		Vector<String> selected_paths;
+
+		jint length = env->GetArrayLength(p_selected_paths);
+		for (jint i = 0; i < length; ++i) {
+			jstring java_string = (jstring)env->GetObjectArrayElement(p_selected_paths, i);
+			String path = jstring_to_string(java_string, env);
+			selected_paths.push_back(path);
+			env->DeleteLocalRef(java_string);
+		}
+		ds->emit_file_picker_callback(p_ok, selected_paths);
+	}
+}
+
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_requestPermissionResult(JNIEnv *env, jclass clazz, jstring p_permission, jboolean p_result) {
 	String permission = jstring_to_string(p_permission, env);
 	if (permission == "android.permission.RECORD_AUDIO" && p_result) {

platform/android/java_godot_lib_jni.h

@@ -68,6 +68,7 @@ JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_setVirtualKeyboardHei
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_requestPermissionResult(JNIEnv *env, jclass clazz, jstring p_permission, jboolean p_result);
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_onNightModeChanged(JNIEnv *env, jclass clazz);
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_inputDialogCallback(JNIEnv *env, jclass clazz, jstring p_text);
+JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_filePickerCallback(JNIEnv *env, jclass clazz, jboolean p_ok, jobjectArray p_selected_paths);
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_onRendererResumed(JNIEnv *env, jclass clazz);
 JNIEXPORT void JNICALL Java_org_godotengine_godot_GodotLib_onRendererPaused(JNIEnv *env, jclass clazz);
 JNIEXPORT jboolean JNICALL Java_org_godotengine_godot_GodotLib_shouldDispatchInputToRenderThread(JNIEnv *env, jclass clazz);

platform/android/java_godot_wrapper.cpp

@@ -68,6 +68,7 @@ GodotJavaWrapper::GodotJavaWrapper(JNIEnv *p_env, jobject p_activity, jobject p_
 	_set_clipboard = p_env->GetMethodID(godot_class, "setClipboard", "(Ljava/lang/String;)V");
 	_has_clipboard = p_env->GetMethodID(godot_class, "hasClipboard", "()Z");
 	_show_input_dialog = p_env->GetMethodID(godot_class, "showInputDialog", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V");
+	_show_file_picker = p_env->GetMethodID(godot_class, "showFilePicker", "(Ljava/lang/String;Ljava/lang/String;I[Ljava/lang/String;)V");
 	_request_permission = p_env->GetMethodID(godot_class, "requestPermission", "(Ljava/lang/String;)Z");
 	_request_permissions = p_env->GetMethodID(godot_class, "requestPermissions", "()Z");
 	_get_granted_permissions = p_env->GetMethodID(godot_class, "getGrantedPermissions", "()[Ljava/lang/String;");
@@ -286,6 +287,29 @@ Error GodotJavaWrapper::show_input_dialog(const String &p_title, const String &p
 	}
 }
 
+Error GodotJavaWrapper::show_file_picker(const String &p_current_directory, const String &p_filename, int p_mode, const Vector<String> &p_filters) {
+	if (_show_file_picker) {
+		JNIEnv *env = get_jni_env();
+		ERR_FAIL_NULL_V(env, ERR_UNCONFIGURED);
+		jstring j_current_directory = env->NewStringUTF(p_current_directory.utf8().get_data());
+		jstring j_filename = env->NewStringUTF(p_filename.utf8().get_data());
+		jint j_mode = p_mode;
+		jobjectArray j_filters = env->NewObjectArray(p_filters.size(), env->FindClass("java/lang/String"), nullptr);
+		for (int i = 0; i < p_filters.size(); ++i) {
+			jstring j_filter = env->NewStringUTF(p_filters[i].utf8().get_data());
+			env->SetObjectArrayElement(j_filters, i, j_filter);
+			env->DeleteLocalRef(j_filter);
+		}
+		env->CallVoidMethod(godot_instance, _show_file_picker, j_current_directory, j_filename, j_mode, j_filters);
+		env->DeleteLocalRef(j_current_directory);
+		env->DeleteLocalRef(j_filename);
+		env->DeleteLocalRef(j_filters);
+		return OK;
+	} else {
+		return ERR_UNCONFIGURED;
+	}
+}
+
 bool GodotJavaWrapper::request_permission(const String &p_name) {
 	if (_request_permission) {
 		JNIEnv *env = get_jni_env();

platform/android/java_godot_wrapper.h

@@ -59,6 +59,7 @@ private:
 	jmethodID _set_clipboard = nullptr;
 	jmethodID _has_clipboard = nullptr;
 	jmethodID _show_input_dialog = nullptr;
+	jmethodID _show_file_picker = nullptr;
 	jmethodID _request_permission = nullptr;
 	jmethodID _request_permissions = nullptr;
 	jmethodID _get_granted_permissions = nullptr;
@@ -105,6 +106,7 @@ public:
 	bool has_has_clipboard();
 	bool has_clipboard();
 	Error show_input_dialog(const String &p_title, const String &p_message, const String &p_existing_text);
+	Error show_file_picker(const String &p_current_directory, const String &p_filename, int p_mode, const Vector<String> &p_filters);
 	bool request_permission(const String &p_name);
 	bool request_permissions();
 	Vector<String> get_granted_permissions() const;

platform/ios/display_server_ios.mm

@@ -370,6 +370,7 @@ bool DisplayServerIOS::has_feature(Feature p_feature) const {
 		// case FEATURE_NATIVE_DIALOG:
 		// case FEATURE_NATIVE_DIALOG_INPUT:
 		// case FEATURE_NATIVE_DIALOG_FILE:
+		// case FEATURE_NATIVE_DIALOG_FILE_EXTRA:
 		// case FEATURE_NATIVE_ICON:
 		// case FEATURE_WINDOW_TRANSPARENCY:
 		case FEATURE_CLIPBOARD:

platform/linuxbsd/wayland/display_server_wayland.cpp

@@ -216,7 +216,8 @@ bool DisplayServerWayland::has_feature(Feature p_feature) const {
 		//case FEATURE_NATIVE_DIALOG:
 		//case FEATURE_NATIVE_DIALOG_INPUT:
 #ifdef DBUS_ENABLED
-		case FEATURE_NATIVE_DIALOG_FILE: {
+		case FEATURE_NATIVE_DIALOG_FILE:
+		case FEATURE_NATIVE_DIALOG_FILE_EXTRA: {
 			return true;
 		} break;
 #endif

platform/linuxbsd/x11/display_server_x11.cpp

@@ -129,6 +129,7 @@ bool DisplayServerX11::has_feature(Feature p_feature) const {
 		case FEATURE_ICON:
 #ifdef DBUS_ENABLED
 		case FEATURE_NATIVE_DIALOG_FILE:
+		case FEATURE_NATIVE_DIALOG_FILE_EXTRA:
 #endif
 		//case FEATURE_NATIVE_DIALOG:
 		//case FEATURE_NATIVE_DIALOG_INPUT:

platform/macos/display_server_macos.mm

@@ -752,6 +752,7 @@ bool DisplayServerMacOS::has_feature(Feature p_feature) const {
 		case FEATURE_NATIVE_DIALOG:
 		case FEATURE_NATIVE_DIALOG_INPUT:
 		case FEATURE_NATIVE_DIALOG_FILE:
+		case FEATURE_NATIVE_DIALOG_FILE_EXTRA:
 		case FEATURE_IME:
 		case FEATURE_WINDOW_TRANSPARENCY:
 		case FEATURE_HIDPI:

platform/web/display_server_web.cpp

@@ -1133,6 +1133,7 @@ bool DisplayServerWeb::has_feature(Feature p_feature) const {
 		//case FEATURE_NATIVE_DIALOG:
 		//case FEATURE_NATIVE_DIALOG_INPUT:
 		//case FEATURE_NATIVE_DIALOG_FILE:
+		//case FEATURE_NATIVE_DIALOG_FILE_EXTRA:
 		//case FEATURE_NATIVE_ICON:
 		//case FEATURE_WINDOW_TRANSPARENCY:
 		//case FEATURE_KEEP_SCREEN_ON:

platform/windows/display_server_windows.cpp

@@ -129,6 +129,7 @@ bool DisplayServerWindows::has_feature(Feature p_feature) const {
 		case FEATURE_NATIVE_DIALOG:
 		case FEATURE_NATIVE_DIALOG_INPUT:
 		case FEATURE_NATIVE_DIALOG_FILE:
+		case FEATURE_NATIVE_DIALOG_FILE_EXTRA:
 		case FEATURE_SWAP_BUFFERS:
 		case FEATURE_KEEP_SCREEN_ON:
 		case FEATURE_TEXT_TO_SPEECH:

scene/gui/file_dialog.cpp

@@ -67,7 +67,18 @@ void FileDialog::_native_popup() {
 	} else if (access == ACCESS_USERDATA) {
 		root = OS::get_singleton()->get_user_data_dir();
 	}
-	DisplayServer::get_singleton()->file_dialog_with_options_show(get_title(), ProjectSettings::get_singleton()->globalize_path(dir->get_text()), root, file->get_text().get_file(), show_hidden_files, DisplayServer::FileDialogMode(mode), filters, _get_options(), callable_mp(this, &FileDialog::_native_dialog_cb));
+	if (DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_NATIVE_DIALOG_FILE_EXTRA)) {
+		DisplayServer::get_singleton()->file_dialog_with_options_show(get_title(), ProjectSettings::get_singleton()->globalize_path(dir->get_text()), root, file->get_text().get_file(), show_hidden_files, DisplayServer::FileDialogMode(mode), filters, _get_options(), callable_mp(this, &FileDialog::_native_dialog_cb_with_options));
+	} else {
+		DisplayServer::get_singleton()->file_dialog_show(get_title(), ProjectSettings::get_singleton()->globalize_path(dir->get_text()), file->get_text().get_file(), show_hidden_files, DisplayServer::FileDialogMode(mode), filters, callable_mp(this, &FileDialog::_native_dialog_cb));
+	}
+}
+
+bool FileDialog::_can_use_native_popup() {
+	if (access == ACCESS_RESOURCES || access == ACCESS_USERDATA || options.size() > 0) {
+		return DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_NATIVE_DIALOG_FILE_EXTRA);
+	}
+	return DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_NATIVE_DIALOG_FILE);
 }
 
 void FileDialog::popup(const Rect2i &p_rect) {
@@ -80,7 +91,7 @@ void FileDialog::popup(const Rect2i &p_rect) {
 	}
 #endif
 
-	if (DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_NATIVE_DIALOG_FILE) && (use_native_dialog || OS::get_singleton()->is_sandboxed())) {
+	if (_can_use_native_popup() && (use_native_dialog || OS::get_singleton()->is_sandboxed())) {
 		_native_popup();
 	} else {
 		ConfirmationDialog::popup(p_rect);
@@ -99,7 +110,7 @@ void FileDialog::set_visible(bool p_visible) {
 	}
 #endif
 
-	if (DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_NATIVE_DIALOG_FILE) && (use_native_dialog || OS::get_singleton()->is_sandboxed())) {
+	if (_can_use_native_popup() && (use_native_dialog || OS::get_singleton()->is_sandboxed())) {
 		if (p_visible) {
 			_native_popup();
 		}
@@ -108,7 +119,11 @@ void FileDialog::set_visible(bool p_visible) {
 	}
 }
 
-void FileDialog::_native_dialog_cb(bool p_ok, const Vector<String> &p_files, int p_filter, const Dictionary &p_selected_options) {
+void FileDialog::_native_dialog_cb(bool p_ok, const Vector<String> &p_files, int p_filter) {
+	_native_dialog_cb_with_options(p_ok, p_files, p_filter, Dictionary());
+}
+
+void FileDialog::_native_dialog_cb_with_options(bool p_ok, const Vector<String> &p_files, int p_filter, const Dictionary &p_selected_options) {
 	if (!p_ok) {
 		file->set_text("");
 		emit_signal(SNAME("canceled"));
@@ -182,7 +197,7 @@ void FileDialog::_notification(int p_what) {
 #endif
 
 			// Replace the built-in dialog with the native one if it started visible.
-			if (is_visible() && DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_NATIVE_DIALOG_FILE) && (use_native_dialog || OS::get_singleton()->is_sandboxed())) {
+			if (is_visible() && _can_use_native_popup() && (use_native_dialog || OS::get_singleton()->is_sandboxed())) {
 				ConfirmationDialog::set_visible(false);
 				_native_popup();
 			}
@@ -1487,7 +1502,7 @@ void FileDialog::set_use_native_dialog(bool p_native) {
 #endif
 
 	// Replace the built-in dialog with the native one if it's currently visible.
-	if (is_inside_tree() && is_visible() && DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_NATIVE_DIALOG_FILE) && (use_native_dialog || OS::get_singleton()->is_sandboxed())) {
+	if (is_inside_tree() && is_visible() && _can_use_native_popup() && (use_native_dialog || OS::get_singleton()->is_sandboxed())) {
 		ConfirmationDialog::set_visible(false);
 		_native_popup();
 	}

scene/gui/file_dialog.h

@@ -188,8 +188,10 @@ private:
 
 	virtual void shortcut_input(const Ref<InputEvent> &p_event) override;
 
+	bool _can_use_native_popup();
 	void _native_popup();
-	void _native_dialog_cb(bool p_ok, const Vector<String> &p_files, int p_filter, const Dictionary &p_selected_options);
+	void _native_dialog_cb(bool p_ok, const Vector<String> &p_files, int p_filter);
+	void _native_dialog_cb_with_options(bool p_ok, const Vector<String> &p_files, int p_filter, const Dictionary &p_selected_options);
 
 	bool _is_open_should_be_disabled();
 

servers/display_server.cpp

@@ -1056,6 +1056,7 @@ void DisplayServer::_bind_methods() {
 	BIND_ENUM_CONSTANT(FEATURE_NATIVE_HELP);
 	BIND_ENUM_CONSTANT(FEATURE_NATIVE_DIALOG_INPUT);
 	BIND_ENUM_CONSTANT(FEATURE_NATIVE_DIALOG_FILE);
+	BIND_ENUM_CONSTANT(FEATURE_NATIVE_DIALOG_FILE_EXTRA);
 
 	BIND_ENUM_CONSTANT(MOUSE_MODE_VISIBLE);
 	BIND_ENUM_CONSTANT(MOUSE_MODE_HIDDEN);

servers/display_server.h

@@ -152,6 +152,7 @@ public:
 		FEATURE_NATIVE_HELP,
 		FEATURE_NATIVE_DIALOG_INPUT,
 		FEATURE_NATIVE_DIALOG_FILE,
+		FEATURE_NATIVE_DIALOG_FILE_EXTRA,
 	};
 
 	virtual bool has_feature(Feature p_feature) const = 0;