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flutter_file_picker
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Adds clearTemporaryFiles() method to explicitly remove cached files 

- Adds Android implementation of clearTemporaryFiles();
- Adds iOS implementation of clearTemporaryFiles();
This commit is contained in:
Miguel Ruivo 2020-05-01 17:49:35 +01:00
parent 29c95c6b27
commit 030a34d72c
11 changed files with 97 additions and 53 deletions
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3
CHANGELOG.md
View File

@ -1,3 +1,6 @@
## 1.9.0
Adds `clearTemporaryFiles()` that allows you to explicitly remove cached files — on Android applies typically to those picked from remote providers, on iOS _all_ picked files are cached.
## 1.8.0+2
Updates podspec to use only PhotoGallery from DKImagePickerController (thanks @jamesdixon!)

5
android/src/main/java/com/mr/flutter/plugin/filepicker/FilePickerPlugin.java
View File

@ -146,6 +146,11 @@ public class FilePickerPlugin implements MethodChannel.MethodCallHandler, Flutte
final MethodChannel.Result result = new MethodResultWrapper(rawResult);
final HashMap arguments = (HashMap) call.arguments;
if (call.method != null && call.method.equals("clear")) {
result.success(FileUtils.clearCache(activity.getApplicationContext()));
return;
}
fileType = FilePickerPlugin.resolveType(call.method);
isMultipleSelection = (boolean) arguments.get("allowMultipleSelection");

22
android/src/main/java/com/mr/flutter/plugin/filepicker/FileUtils.java
View File

@ -14,6 +14,7 @@ import android.util.Log;
import android.webkit.MimeTypeMap;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
@ -211,12 +212,31 @@ public class FileUtils {
return result;
}
public static boolean clearCache(final Context context) {
try {
final File cacheDir = new File(context.getCacheDir() + "/file_picker/");
final File[] files = cacheDir.listFiles();
if (files != null) {
for (final File file : files) {
file.delete();
}
}
} catch (final Exception ex) {
Log.e(TAG, "There was an error while clearing cached files: " + ex.toString());
return false;
}
return true;
}
public static String getUriFromRemote(final Context context, final Uri uri) {
Log.i(TAG, "Caching file from remote/external URI");
FileOutputStream fos = null;
final String fileName = FileUtils.getFileName(uri, context);
final String externalFile = context.getCacheDir().getAbsolutePath() + "/" + (fileName != null ? fileName : new Random().nextInt(100000));
final String externalFile = context.getCacheDir().getAbsolutePath() + "/file_picker/" + (fileName != null ? fileName : new Random().nextInt(100000));
new File(externalFile).getParentFile().mkdirs();
try {
fos = new FileOutputStream(externalFile);

27
example/ios/Podfile.lock
View File

@ -1,27 +1,8 @@
PODS:
- CropViewController (2.5.2)
- DKCamera (1.6.7)
- DKImagePickerController (4.2.2):
- DKImagePickerController/Camera (= 4.2.2)
- DKImagePickerController/Core (= 4.2.2)
- DKImagePickerController/ImageDataManager (= 4.2.2)
- DKImagePickerController/InlineCamera (= 4.2.2)
- DKImagePickerController/PhotoEditor (= 4.2.2)
- DKImagePickerController/PhotoGallery (= 4.2.2)
- DKImagePickerController/Resource (= 4.2.2)
- DKImagePickerController/Camera (4.2.2):
- DKCamera
- DKImagePickerController/Core
- DKImagePickerController/Core (4.2.2):
- DKImagePickerController/ImageDataManager
- DKImagePickerController/Resource
- DKImagePickerController/ImageDataManager (4.2.2)
- DKImagePickerController/InlineCamera (4.2.2):
- DKCamera
- DKImagePickerController/Core
- DKImagePickerController/PhotoEditor (4.2.2):
- CropViewController (~> 2.5)
- DKImagePickerController/Core
- DKImagePickerController/PhotoGallery (4.2.2):
- DKImagePickerController/Core
- DKPhotoGallery
@ -50,7 +31,7 @@ PODS:
- SDWebImage
- SDWebImageFLPlugin
- file_picker (0.0.1):
- DKImagePickerController
- DKImagePickerController/PhotoGallery
- Flutter
- FLAnimatedImage (1.0.12)
- Flutter (1.0.0)
@ -70,8 +51,6 @@ DEPENDENCIES:
SPEC REPOS:
trunk:
- CropViewController
- DKCamera
- DKImagePickerController
- DKPhotoGallery
- FLAnimatedImage
@ -87,11 +66,9 @@ EXTERNAL SOURCES:
:path: ".symlinks/plugins/flutter_plugin_android_lifecycle/ios"
SPEC CHECKSUMS:
CropViewController: 1aac40093c5739e60d992b04724a55d12a689a4c
DKCamera: a902b66921fca14b7a75266feb8c7568aa7caa71
DKImagePickerController: 4a3e7948a848c4348e600b3fe5ce41478835fa10
DKPhotoGallery: 0290d32343574f06eaa4c26f8f2f8a1035e916be
file_picker: f9134d4ef376b10e950694e6b96e81dafea9ceda
file_picker: 3e6c3790de664ccf9b882732d9db5eaf6b8d4eb1
FLAnimatedImage: 4a0b56255d9b05f18b6dd7ee06871be5d3b89e31
Flutter: 0e3d915762c693b495b44d77113d4970485de6ec
flutter_plugin_android_lifecycle: 47de533a02850f070f5696a623995e93eddcdb9b

21
example/ios/Runner.xcodeproj/project.pbxproj
View File

@ -246,30 +246,9 @@
files = (
);
inputPaths = (
"${PODS_ROOT}/Target Support Files/Pods-Runner/Pods-Runner-frameworks.sh",
"${BUILT_PRODUCTS_DIR}/CropViewController/CropViewController.framework",
"${BUILT_PRODUCTS_DIR}/DKCamera/DKCamera.framework",
"${BUILT_PRODUCTS_DIR}/DKImagePickerController/DKImagePickerController.framework",
"${BUILT_PRODUCTS_DIR}/DKPhotoGallery/DKPhotoGallery.framework",
"${BUILT_PRODUCTS_DIR}/FLAnimatedImage/FLAnimatedImage.framework",
"${PODS_ROOT}/../.symlinks/flutter/ios/Flutter.framework",
"${BUILT_PRODUCTS_DIR}/SDWebImage/SDWebImage.framework",
"${BUILT_PRODUCTS_DIR}/SDWebImageFLPlugin/SDWebImageFLPlugin.framework",
"${BUILT_PRODUCTS_DIR}/file_picker/file_picker.framework",
"${BUILT_PRODUCTS_DIR}/flutter_plugin_android_lifecycle/flutter_plugin_android_lifecycle.framework",
);
name = "[CP] Embed Pods Frameworks";
outputPaths = (
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/CropViewController.framework",
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/DKCamera.framework",
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/DKImagePickerController.framework",
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/DKPhotoGallery.framework",
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/FLAnimatedImage.framework",
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/Flutter.framework",
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/SDWebImage.framework",
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/SDWebImageFLPlugin.framework",
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/file_picker.framework",
"${TARGET_BUILD_DIR}/${FRAMEWORKS_FOLDER_PATH}/flutter_plugin_android_lifecycle.framework",
);
runOnlyForDeploymentPostprocessing = 0;
shellPath = /bin/sh;

31
example/lib/src/file_picker_demo.dart
View File

@ -9,13 +9,14 @@ class FilePickerDemo extends StatefulWidget {
}
class _FilePickerDemoState extends State<FilePickerDemo> {
final GlobalKey<ScaffoldState> _scaffoldKey = GlobalKey<ScaffoldState>();
String _fileName;
String _path;
Map<String, String> _paths;
String _extension;
bool _loadingPath = false;
bool _multiPick = false;
FileType _pickingType;
FileType _pickingType = FileType.any;
TextEditingController _controller = new TextEditingController();
@override
@ -54,10 +55,24 @@ class _FilePickerDemoState extends State<FilePickerDemo> {
});
}
void _clearCachedFiles() {
FilePicker.clearTemporaryFiles().then((result) {
_scaffoldKey.currentState.showSnackBar(
SnackBar(
backgroundColor: result ? Colors.green : Colors.red,
content: Text((result
? 'Temporary files removed with success.'
: 'Failed to clean temporary files')),
),
);
});
}
@override
Widget build(BuildContext context) {
return new MaterialApp(
home: new Scaffold(
key: _scaffoldKey,
appBar: new AppBar(
title: const Text('File Picker example app'),
),
@ -132,9 +147,17 @@ class _FilePickerDemoState extends State<FilePickerDemo> {
),
new Padding(
padding: const EdgeInsets.only(top: 50.0, bottom: 20.0),
child: new RaisedButton(
onPressed: () => _openFileExplorer(),
child: new Text("Open file picker"),
child: Column(
children: <Widget>[
new RaisedButton(
onPressed: () => _openFileExplorer(),
child: new Text("Open file picker"),
),
new RaisedButton(
onPressed: () => _clearCachedFiles(),
child: new Text("Clear temporary files"),
),
],
),
),
new Builder(

7
ios/Classes/FilePickerPlugin.m
View File

@ -47,6 +47,13 @@
}
_result = result;
if([call.method isEqualToString:@"clear"]) {
_result([NSNumber numberWithBool: [FileUtils clearTemporaryFiles]]);
_result = nil;
return;
}
NSDictionary * arguments = call.arguments;
BOOL isMultiplePick = ((NSNumber*)[arguments valueForKey:@"allowMultipleSelection"]).boolValue;
if([call.method isEqualToString:@"any"] || [call.method containsString:@"custom"]) {

3
ios/Classes/FileUtils.h
View File

@ -19,7 +19,8 @@ typedef NS_ENUM(NSInteger, MediaType) {
MEDIA
};
@interface FileUtils : NSObject
@interface FileUtils : NSObject
+ (BOOL) clearTemporaryFiles;
+ (NSArray<NSString*>*) resolveType:(NSString*)type withAllowedExtensions:(NSArray<NSString*>*)allowedExtensions;
+ (MediaType) resolveMediaType:(NSString*)type;
+ (NSArray*) resolvePath:(NSArray<NSURL *> *)urls;

18
ios/Classes/FileUtils.m
View File

@ -9,6 +9,24 @@
@implementation FileUtils
+ (BOOL) clearTemporaryFiles {
NSString *tmpDirectory = NSTemporaryDirectory();
NSFileManager *fileManager = [NSFileManager defaultManager];
NSError *error;
NSArray *cacheFiles = [fileManager contentsOfDirectoryAtPath:tmpDirectory error:&error];
for (NSString *file in cacheFiles) {
error = nil;
[fileManager removeItemAtPath:[tmpDirectory stringByAppendingPathComponent:file] error:&error];
if(error != nil) {
Log(@"Failed to remove temporary file %@, aborting. Error: %@", file, error);
return false;
}
}
Log(@"All temporary files clear");
return true;
}
+ (NSArray<NSString*> *) resolveType:(NSString*)type withAllowedExtensions:(NSArray<NSString*>*) allowedExtensions {
if ([type isEqualToString:@"any"]) {

11
lib/file_picker.dart
View File

@ -51,6 +51,17 @@ class FilePicker {
return filePath != null ? File(filePath) : null;
}
/// Asks the underlying platform to remove any temporary files created by this plugin.
///
/// This typically relates to cached files that are stored in the cache directory of
/// each platform and it isn't required to invoke this as the system should take care
/// of it whenever needed. However, this will force the cleanup if you want to manage those on your own.
///
/// Returns `true` if the files were removed with success, `false` otherwise.
static Future<bool> clearTemporaryFiles() async {
return _channel.invokeMethod('clear');
}
/// Returns a `List<File>` object from the selected files paths.
///
/// This is an utility method that does the same of `getMultiFilePath()` but saving some boilerplate if

2
pubspec.yaml
View File

@ -1,7 +1,7 @@
name: file_picker
description: A package that allows you to use a native file explorer to pick single or multiple absolute file paths, with extension filtering support.
homepage: https://github.com/miguelpruivo/plugins_flutter_file_picker
version: 1.8.0+2
version: 1.9.0
dependencies:
flutter: