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Kotlin migration (WIP)

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Thibault Deckers 2020-10-11 16:28:50 +09:00
parent cf68567096
commit 5c93abd928
12 changed files with 247 additions and 527 deletions
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20
android/app/src/main/java/deckers/thibault/aves/channel/streams/IntentStreamHandler.java
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@ -1,20 +0,0 @@
package deckers.thibault.aves.channel.streams;
import io.flutter.plugin.common.EventChannel;
public class IntentStreamHandler implements EventChannel.StreamHandler {
private EventChannel.EventSink eventSink;
@Override
public void onListen(Object args, EventChannel.EventSink eventSink) {
this.eventSink = eventSink;
}
@Override
public void onCancel(Object arguments) {
}
public void notifyNewIntent() {
eventSink.success(true);
}
}

53
android/app/src/main/java/deckers/thibault/aves/channel/streams/MediaStoreStreamHandler.java
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@ -1,53 +0,0 @@
package deckers.thibault.aves.channel.streams;
import android.content.Context;
import android.os.Handler;
import android.os.Looper;
import java.util.Map;
import deckers.thibault.aves.model.provider.MediaStoreImageProvider;
import io.flutter.plugin.common.EventChannel;
public class MediaStoreStreamHandler implements EventChannel.StreamHandler {
public static final String CHANNEL = "deckers.thibault/aves/mediastorestream";
private Context context;
private EventChannel.EventSink eventSink;
private Handler handler;
private Map<Integer, Integer> knownEntries;
@SuppressWarnings("unchecked")
public MediaStoreStreamHandler(Context context, Object arguments) {
this.context = context;
if (arguments instanceof Map) {
Map<String, Object> argMap = (Map<String, Object>) arguments;
this.knownEntries = (Map<Integer, Integer>) argMap.get("knownEntries");
}
}
@Override
public void onListen(Object args, EventChannel.EventSink eventSink) {
this.eventSink = eventSink;
this.handler = new Handler(Looper.getMainLooper());
new Thread(this::fetchAll).start();
}
@Override
public void onCancel(Object args) {
// nothing
}
private void success(final Map<String, Object> result) {
handler.post(() -> eventSink.success(result));
}
private void endOfStream() {
handler.post(() -> eventSink.endOfStream());
}
void fetchAll() {
new MediaStoreImageProvider().fetchAll(context, knownEntries, this::success); // 350ms
endOfStream();
}
}

52
android/app/src/main/java/deckers/thibault/aves/channel/streams/StorageAccessStreamHandler.java
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@ -1,52 +0,0 @@
package deckers.thibault.aves.channel.streams;
import android.app.Activity;
import android.os.Handler;
import android.os.Looper;
import java.util.Map;
import deckers.thibault.aves.utils.PermissionManager;
import io.flutter.plugin.common.EventChannel;
// starting activity to give access with the native dialog
// breaks the regular `MethodChannel` so we use a stream channel instead
public class StorageAccessStreamHandler implements EventChannel.StreamHandler {
public static final String CHANNEL = "deckers.thibault/aves/storageaccessstream";
private Activity activity;
private EventChannel.EventSink eventSink;
private Handler handler;
private String path;
@SuppressWarnings("unchecked")
public StorageAccessStreamHandler(Activity activity, Object arguments) {
this.activity = activity;
if (arguments instanceof Map) {
Map<String, Object> argMap = (Map<String, Object>) arguments;
this.path = (String) argMap.get("path");
}
}
@Override
public void onListen(Object args, EventChannel.EventSink eventSink) {
this.eventSink = eventSink;
this.handler = new Handler(Looper.getMainLooper());
Runnable onGranted = () -> success(true); // user gave access to a directory, with no guarantee that it matches the specified `path`
Runnable onDenied = () -> success(false); // user cancelled
PermissionManager.requestVolumeAccess(activity, path, onGranted, onDenied);
}
@Override
public void onCancel(Object o) {
}
private void success(final boolean result) {
handler.post(() -> eventSink.success(result));
endOfStream();
}
private void endOfStream() {
handler.post(() -> eventSink.endOfStream());
}
}

3
android/app/src/main/java/deckers/thibault/aves/model/provider/FileImageProvider.java
View file

@ -8,14 +8,13 @@ import androidx.annotation.NonNull;
import java.io.File;
import deckers.thibault.aves.model.SourceImageEntry;
import deckers.thibault.aves.utils.FileUtils;
class FileImageProvider extends ImageProvider {
@Override
public void fetchSingle(@NonNull final Context context, @NonNull final Uri uri, @NonNull final String mimeType, @NonNull final ImageOpCallback callback) {
SourceImageEntry entry = new SourceImageEntry(uri, mimeType);
String path = FileUtils.getPathFromUri(context, uri);
String path = uri.getPath();
if (path != null) {
try {
File file = new File(path);

218
android/app/src/main/java/deckers/thibault/aves/utils/FileUtils.java
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@ -1,218 +0,0 @@
/*
* Copyright (C) 2007-2008 OpenIntents.org
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* This file was modified by the Flutter authors from the following original file:
* https://raw.githubusercontent.com/iPaulPro/aFileChooser/master/aFileChooser/src/com/ipaulpro/afilechooser/utils/FileUtils.java
*/
// TLAD: formatted code copied from:
// https://raw.githubusercontent.com/flutter/plugins/master/packages/image_picker/android/src/main/java/io/flutter/plugins/imagepicker/FileUtils.java
// do not add code to this file!
package deckers.thibault.aves.utils;
import android.annotation.SuppressLint;
import android.content.ContentResolver;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.webkit.MimeTypeMap;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class FileUtils {
// useful (for Download, File, etc.) but slower
// than directly using `MediaStore.MediaColumns.DATA` from the MediaStore query
public static String getPathFromUri(final Context context, final Uri uri) {
String path = getPathFromLocalUri(context, uri);
if (path == null) {
path = getPathFromRemoteUri(context, uri);
}
return path;
}
@SuppressLint("NewApi")
private static String getPathFromLocalUri(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
} else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
if (!TextUtils.isEmpty(id)) {
try {
final Uri contentUri =
ContentUris.withAppendedId(
Uri.parse(Environment.DIRECTORY_DOWNLOADS), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
} catch (NumberFormatException e) {
return null;
}
}
} else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[]{split[1]};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
} else if (ContentResolver.SCHEME_CONTENT.equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri)) {
return null;
}
return getDataColumn(context, uri, null, null);
} else if (ContentResolver.SCHEME_FILE.equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
private static String getDataColumn(
Context context, Uri uri, String selection, String[] selectionArgs) {
final String column = "_data";
final String[] projection = {column};
try (Cursor cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null)) {
if (cursor != null && cursor.moveToFirst()) {
final int column_index = cursor.getColumnIndex(column);
//yandex.disk and dropbox do not have _data column
if (column_index == -1) {
return null;
}
return cursor.getString(column_index);
}
}
return null;
}
private static String getPathFromRemoteUri(final Context context, final Uri uri) {
// The code below is why Java now has try-with-resources and the Files utility.
File file = null;
InputStream inputStream = null;
OutputStream outputStream = null;
boolean success = false;
try {
String extension = getImageExtension(context, uri);
inputStream = context.getContentResolver().openInputStream(uri);
file = File.createTempFile("image_picker", extension, context.getCacheDir());
outputStream = new FileOutputStream(file);
if (inputStream != null) {
copy(inputStream, outputStream);
success = true;
}
} catch (IOException ignored) {
} finally {
try {
if (inputStream != null) inputStream.close();
} catch (IOException ignored) {
}
try {
if (outputStream != null) outputStream.close();
} catch (IOException ignored) {
// If closing the output stream fails, we cannot be sure that the
// target file was written in full. Flushing the stream merely moves
// the bytes into the OS, not necessarily to the file.
success = false;
}
}
return success ? file.getPath() : null;
}
/**
* @return extension of image with dot, or default .jpg if it none.
*/
private static String getImageExtension(Context context, Uri uriImage) {
String extension = null;
try (Cursor cursor = context
.getContentResolver()
.query(uriImage, new String[]{MediaStore.MediaColumns.MIME_TYPE}, null, null, null)) {
if (cursor != null && cursor.moveToNext()) {
String mimeType = cursor.getString(0);
extension = MimeTypeMap.getSingleton().getExtensionFromMimeType(mimeType);
}
}
if (extension == null) {
//default extension for matches the previous behavior of the plugin
extension = "jpg";
}
return "." + extension;
}
private static void copy(InputStream in, OutputStream out) throws IOException {
final byte[] buffer = new byte[4 * 1024];
int bytesRead;
while ((bytesRead = in.read(buffer)) != -1) {
out.write(buffer, 0, bytesRead);
}
out.flush();
}
private static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
private static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
private static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
private static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.contentprovider".equals(uri.getAuthority());
}
}

180
android/app/src/main/java/deckers/thibault/aves/utils/PermissionManager.java
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@ -1,180 +0,0 @@
package deckers.thibault.aves.utils;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.UriPermission;
import android.net.Uri;
import android.os.Build;
import android.os.storage.StorageManager;
import android.os.storage.StorageVolume;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.app.ActivityCompat;
import com.google.common.base.Splitter;
import java.io.File;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
public class PermissionManager {
private static final String LOG_TAG = Utils.createLogTag(PermissionManager.class);
public static final int VOLUME_ROOT_PERMISSION_REQUEST_CODE = 1;
// permission request code to pending runnable
private static ConcurrentHashMap<Integer, PendingPermissionHandler> pendingPermissionMap = new ConcurrentHashMap<>();
public static void requestVolumeAccess(@NonNull Activity activity, @NonNull String path, @NonNull Runnable onGranted, @NonNull Runnable onDenied) {
Log.i(LOG_TAG, "request user to select and grant access permission to volume=" + path);
pendingPermissionMap.put(VOLUME_ROOT_PERMISSION_REQUEST_CODE, new PendingPermissionHandler(path, onGranted, onDenied));
Intent intent = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
StorageManager sm = activity.getSystemService(StorageManager.class);
if (sm != null) {
StorageVolume volume = sm.getStorageVolume(new File(path));
if (volume != null) {
intent = volume.createOpenDocumentTreeIntent();
}
}
}
// fallback to basic open document tree intent
if (intent == null) {
intent = new Intent(Intent.ACTION_OPEN_DOCUMENT_TREE);
}
ActivityCompat.startActivityForResult(activity, intent, VOLUME_ROOT_PERMISSION_REQUEST_CODE, null);
}
public static void onPermissionResult(int requestCode, @Nullable Uri treeUri) {
Log.d(LOG_TAG, "onPermissionResult with requestCode=" + requestCode + ", treeUri=" + treeUri);
boolean granted = treeUri != null;
PendingPermissionHandler handler = pendingPermissionMap.remove(requestCode);
if (handler == null) return;
Runnable runnable = granted ? handler.onGranted : handler.onDenied;
if (runnable == null) return;
runnable.run();
}
public static Optional<String> getGrantedDirForPath(@NonNull Context context, @NonNull String anyPath) {
return getAccessibleDirs(context).stream().filter(anyPath::startsWith).findFirst();
}
public static List<Map<String, String>> getInaccessibleDirectories(@NonNull Context context, @NonNull List<String> dirPaths) {
Set<String> accessibleDirs = getAccessibleDirs(context);
// find set of inaccessible directories for each volume
Map<String, Set<String>> dirsPerVolume = new HashMap<>();
for (String dirPath : dirPaths) {
if (!dirPath.endsWith(File.separator)) {
dirPath += File.separator;
}
if (accessibleDirs.stream().noneMatch(dirPath::startsWith)) {
// inaccessible dirs
StorageUtils.PathSegments segments = new StorageUtils.PathSegments(context, dirPath);
Set<String> dirSet = dirsPerVolume.getOrDefault(segments.volumePath, new HashSet<>());
if (dirSet != null) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
// request primary directory on volume from Android R
String relativeDir = segments.relativeDir;
if (relativeDir != null) {
Iterator<String> iterator = Splitter.on(File.separatorChar).omitEmptyStrings().split(relativeDir).iterator();
if (iterator.hasNext()) {
// primary dir
dirSet.add(iterator.next());
}
}
} else {
// request volume root until Android Q
dirSet.add("");
}
}
dirsPerVolume.put(segments.volumePath, dirSet);
}
}
// format for easier handling on Flutter
List<Map<String, String>> inaccessibleDirs = new ArrayList<>();
StorageManager sm = context.getSystemService(StorageManager.class);
if (sm != null) {
for (Map.Entry<String, Set<String>> volumeEntry : dirsPerVolume.entrySet()) {
String volumePath = volumeEntry.getKey();
String volumeDescription = "";
try {
StorageVolume volume = sm.getStorageVolume(new File(volumePath));
if (volume != null) {
volumeDescription = volume.getDescription(context);
}
} catch (IllegalArgumentException e) {
// ignore
}
for (String relativeDir : volumeEntry.getValue()) {
HashMap<String, String> dirMap = new HashMap<>();
dirMap.put("volumePath", volumePath);
dirMap.put("volumeDescription", volumeDescription);
dirMap.put("relativeDir", relativeDir);
inaccessibleDirs.add(dirMap);
}
}
}
Log.d(LOG_TAG, "getInaccessibleDirectories dirPaths=" + dirPaths + " -> inaccessibleDirs=" + inaccessibleDirs);
return inaccessibleDirs;
}
public static void revokeDirectoryAccess(Context context, String path) {
Optional<Uri> uri = StorageUtils.convertDirPathToTreeUri(context, path);
if (uri.isPresent()) {
int flags = Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION;
context.getContentResolver().releasePersistableUriPermission(uri.get(), flags);
}
}
// returns paths matching URIs granted by the user
public static Set<String> getGrantedDirs(Context context) {
Set<String> grantedDirs = new HashSet<>();
for (UriPermission uriPermission : context.getContentResolver().getPersistedUriPermissions()) {
Optional<String> dirPath = StorageUtils.convertTreeUriToDirPath(context, uriPermission.getUri());
dirPath.ifPresent(grantedDirs::add);
}
return grantedDirs;
}
// returns paths accessible to the app (granted by the user or by default)
private static Set<String> getAccessibleDirs(Context context) {
Set<String> accessibleDirs = new HashSet<>(getGrantedDirs(context));
// from Android R, we no longer have access permission by default on primary volume
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.Q) {
String primaryPath = StorageUtils.getPrimaryVolumePath();
accessibleDirs.add(primaryPath);
}
Log.d(LOG_TAG, "getAccessibleDirs accessibleDirs=" + accessibleDirs);
return accessibleDirs;
}
static class PendingPermissionHandler {
final String path;
final Runnable onGranted; // user gave access to a directory, with no guarantee that it matches the specified `path`
final Runnable onDenied; // user cancelled
PendingPermissionHandler(@NonNull String path, @NonNull Runnable onGranted, @NonNull Runnable onDenied) {
this.path = path;
this.onGranted = onGranted;
this.onDenied = onDenied;
}
}
}

2
android/app/src/main/java/deckers/thibault/aves/utils/StorageUtils.java
View file

@ -340,7 +340,7 @@ public class StorageUtils {
dirPath += File.separator;
}
if (requireAccessPermission(dirPath)) {
String grantedDir = PermissionManager.getGrantedDirForPath(context, dirPath).orElse(null);
String grantedDir = PermissionManager.getGrantedDirForPath(context, dirPath);
if (grantedDir == null) return null;
Uri rootTreeUri = convertDirPathToTreeUri(context, grantedDir).orElse(null);

2
android/app/src/main/kotlin/deckers/thibault/aves/MainActivity.kt
View file

@ -139,7 +139,7 @@ class MainActivity : FlutterActivity() {
}
override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent) {
if (requestCode == PermissionManager.VOLUME_ROOT_PERMISSION_REQUEST_CODE) {
if (requestCode == PermissionManager.VOLUME_ACCESS_REQUEST_CODE) {
val treeUri = data.data
if (resultCode != RESULT_OK || treeUri == null) {
PermissionManager.onPermissionResult(requestCode, null)

18
android/app/src/main/kotlin/deckers/thibault/aves/channel/streams/IntentStreamHandler.kt Normal file
View file

@ -0,0 +1,18 @@
package deckers.thibault.aves.channel.streams
import io.flutter.plugin.common.EventChannel
import io.flutter.plugin.common.EventChannel.EventSink
class IntentStreamHandler : EventChannel.StreamHandler {
private lateinit var eventSink: EventSink
override fun onListen(arguments: Any?, eventSink: EventSink) {
this.eventSink = eventSink
}
override fun onCancel(arguments: Any?) {}
fun notifyNewIntent() {
eventSink.success(true)
}
}

46
android/app/src/main/kotlin/deckers/thibault/aves/channel/streams/MediaStoreStreamHandler.kt Normal file
View file

@ -0,0 +1,46 @@
package deckers.thibault.aves.channel.streams
import android.content.Context
import android.os.Handler
import android.os.Looper
import deckers.thibault.aves.model.provider.MediaStoreImageProvider
import io.flutter.plugin.common.EventChannel
import io.flutter.plugin.common.EventChannel.EventSink
class MediaStoreStreamHandler(private val context: Context, arguments: Any?) : EventChannel.StreamHandler {
private lateinit var eventSink: EventSink
private lateinit var handler: Handler
private var knownEntries: Map<Int, Int>? = null
init {
if (arguments is Map<*, *>) {
@Suppress("UNCHECKED_CAST")
knownEntries = arguments["knownEntries"] as Map<Int, Int>?
}
}
override fun onListen(arguments: Any?, eventSink: EventSink) {
this.eventSink = eventSink
handler = Handler(Looper.getMainLooper())
Thread { fetchAll() }.start()
}
override fun onCancel(arguments: Any?) {}
private fun success(result: Map<String, Any>) {
handler.post { eventSink.success(result) }
}
private fun endOfStream() {
handler.post { eventSink.endOfStream() }
}
private fun fetchAll() {
MediaStoreImageProvider().fetchAll(context, knownEntries) { success(it) }
endOfStream()
}
companion object {
const val CHANNEL = "deckers.thibault/aves/mediastorestream"
}
}

44
android/app/src/main/kotlin/deckers/thibault/aves/channel/streams/StorageAccessStreamHandler.kt Normal file
View file

@ -0,0 +1,44 @@
package deckers.thibault.aves.channel.streams
import android.app.Activity
import android.os.Handler
import android.os.Looper
import deckers.thibault.aves.utils.PermissionManager.requestVolumeAccess
import io.flutter.plugin.common.EventChannel
import io.flutter.plugin.common.EventChannel.EventSink
// starting activity to give access with the native dialog
// breaks the regular `MethodChannel` so we use a stream channel instead
class StorageAccessStreamHandler(private val activity: Activity, arguments: Any?) : EventChannel.StreamHandler {
private lateinit var eventSink: EventSink
private lateinit var handler: Handler
private var path: String? = null
init {
if (arguments is Map<*, *>) {
path = arguments["path"] as String?
}
}
override fun onListen(arguments: Any?, eventSink: EventSink) {
this.eventSink = eventSink
handler = Handler(Looper.getMainLooper())
requestVolumeAccess(activity, path!!, { success(true) }, { success(false) })
}
override fun onCancel(arguments: Any?) {}
private fun success(result: Boolean) {
handler.post { eventSink.success(result) }
endOfStream()
}
private fun endOfStream() {
handler.post { eventSink.endOfStream() }
}
companion object {
const val CHANNEL = "deckers.thibault/aves/storageaccessstream"
}
}

136
android/app/src/main/kotlin/deckers/thibault/aves/utils/PermissionManager.kt Normal file
View file

@ -0,0 +1,136 @@
package deckers.thibault.aves.utils
import android.app.Activity
import android.content.Context
import android.content.Intent
import android.net.Uri
import android.os.Build
import android.os.storage.StorageManager
import android.util.Log
import androidx.core.app.ActivityCompat
import deckers.thibault.aves.utils.StorageUtils.PathSegments
import deckers.thibault.aves.utils.Utils.createLogTag
import java.io.File
import java.util.*
import java.util.concurrent.ConcurrentHashMap
object PermissionManager {
private val LOG_TAG = createLogTag(PermissionManager::class.java)
const val VOLUME_ACCESS_REQUEST_CODE = 1
// permission request code to pending runnable
private val pendingPermissionMap = ConcurrentHashMap<Int, PendingPermissionHandler>()
@JvmStatic
fun requestVolumeAccess(activity: Activity, path: String, onGranted: () -> Unit, onDenied: () -> Unit) {
Log.i(LOG_TAG, "request user to select and grant access permission to volume=$path")
pendingPermissionMap[VOLUME_ACCESS_REQUEST_CODE] = PendingPermissionHandler(path, onGranted, onDenied)
var intent: Intent? = null
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
val sm = activity.getSystemService(StorageManager::class.java)
intent = sm?.getStorageVolume(File(path))?.createOpenDocumentTreeIntent()
}
// fallback to basic open document tree intent
if (intent == null) {
intent = Intent(Intent.ACTION_OPEN_DOCUMENT_TREE)
}
ActivityCompat.startActivityForResult(activity, intent, VOLUME_ACCESS_REQUEST_CODE, null)
}
fun onPermissionResult(requestCode: Int, treeUri: Uri?) {
Log.d(LOG_TAG, "onPermissionResult with requestCode=$requestCode, treeUri=$treeUri")
val handler = pendingPermissionMap.remove(requestCode) ?: return
(if (treeUri != null) handler.onGranted else handler.onDenied)()
}
@JvmStatic
fun getGrantedDirForPath(context: Context, anyPath: String): String? {
return getAccessibleDirs(context).firstOrNull { anyPath.startsWith(it) }
}
@JvmStatic
fun getInaccessibleDirectories(context: Context, dirPaths: List<String>): List<Map<String, String>> {
val accessibleDirs = getAccessibleDirs(context)
// find set of inaccessible directories for each volume
val dirsPerVolume = HashMap<String, MutableSet<String>>()
for (dirPath in dirPaths.map { if (it.endsWith(File.separator)) it else it + File.separator }) {
if (accessibleDirs.none { dirPath.startsWith(it) }) {
// inaccessible dirs
val segments = PathSegments(context, dirPath)
val dirSet = dirsPerVolume.getOrDefault(segments.volumePath, HashSet())
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
// request primary directory on volume from Android R
segments.relativeDir?.let { relativeDir ->
relativeDir.split(File.separatorChar).firstOrNull { it.isNotEmpty() }?.let { dirSet.add(it) }
}
} else {
// request volume root until Android Q
dirSet.add("")
}
dirsPerVolume[segments.volumePath] = dirSet
}
}
// format for easier handling on Flutter
val inaccessibleDirs = ArrayList<Map<String, String>>()
context.getSystemService(StorageManager::class.java)?.let { sm ->
for ((volumePath, relativeDirs) in dirsPerVolume) {
var volumeDescription: String? = null
try {
volumeDescription = sm.getStorageVolume(File(volumePath))?.getDescription(context)
} catch (e: IllegalArgumentException) {
// ignore
}
for (relativeDir in relativeDirs) {
val dirMap = HashMap<String, String>()
dirMap["volumePath"] = volumePath
dirMap["volumeDescription"] = volumeDescription ?: ""
dirMap["relativeDir"] = relativeDir
inaccessibleDirs.add(dirMap)
}
}
}
Log.d(LOG_TAG, "getInaccessibleDirectories dirPaths=$dirPaths -> inaccessibleDirs=$inaccessibleDirs")
return inaccessibleDirs
}
@JvmStatic
fun revokeDirectoryAccess(context: Context, path: String) {
val uri = StorageUtils.convertDirPathToTreeUri(context, path)
if (uri.isPresent) {
val flags = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
context.contentResolver.releasePersistableUriPermission(uri.get(), flags)
}
}
// returns paths matching URIs granted by the user
@JvmStatic
fun getGrantedDirs(context: Context): Set<String> {
val grantedDirs = HashSet<String>()
for (uriPermission in context.contentResolver.persistedUriPermissions) {
val dirPath = StorageUtils.convertTreeUriToDirPath(context, uriPermission.uri)
dirPath.ifPresent { grantedDirs.add(it) }
}
return grantedDirs
}
// returns paths accessible to the app (granted by the user or by default)
private fun getAccessibleDirs(context: Context): Set<String> {
val accessibleDirs = HashSet(getGrantedDirs(context))
// from Android R, we no longer have access permission by default on primary volume
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.Q) {
accessibleDirs.add(StorageUtils.getPrimaryVolumePath())
}
Log.d(LOG_TAG, "getAccessibleDirs accessibleDirs=$accessibleDirs")
return accessibleDirs
}
// onGranted: user gave access to a directory, with no guarantee that it matches the specified `path`
// onDenied: user cancelled
internal data class PendingPermissionHandler(val path: String, val onGranted: () -> Unit, val onDenied: () -> Unit)
}