[英]Error while using image picker and web_image_picker in flutter
我遇到了一個問題，我正在使用圖像選擇器和網絡圖像選擇器
事情在網絡上運行良好，但是當我嘗試在 android 中運行它時，由於網絡圖像選擇器而出現一些錯誤
找不到錯誤 dart:html Not found dart:js 和所有
在這里我使用圖像選擇器
Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
InkWell(
onTap: () async {
await getImage();
},
child: Container(
decoration: BoxDecoration(
color: Colors.grey[200],
borderRadius: BorderRadius.circular(8),
border: Border.all(
color: Colors.grey,
width: 0.5,
),
// boxShadow: const [
// BoxShadow(
// color: Colors.grey,
// blurRadius: 2,
// spreadRadius: 1,
// ),
// ],
),
// padding: const EdgeInsets.all(16),
height: MediaQuery.of(context).size.width * 0.4,
width: MediaQuery.of(context).size.width * 0.4,
child: _image != null
? kIsWeb
? Image.memory(
_image,
fit: BoxFit.cover,
)
: Image.file(
_image,
fit: BoxFit.cover,
)
: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Icon(
Icons.photo,
size: 40,
color: Colors.grey[600],
),
const SizedBox(height: 8),
Text(
'Upload Your Image',
style: TextStyle(
fontSize: 18,
fontWeight: FontWeight.bold,
color: Colors.grey[600]),
),
],
),
),
),
],
),
它是 getImage() 方法
getImage() async {
if (kIsWeb) {
Uint8List? image = await ImagePickerWeb.getImageAsBytes();
setState(() {
_image = image;
});
print('web');
} else {
XFile? image = await imagePicker.pickImage(source: ImageSource.gallery);
setState(() {
_image = file.File(image!.path);
});
}
}
這是完整的錯誤消息
Launching lib/main.dart on M2004J19C in debug mode...
Invalid depfile: /home/themahi19/Jfamosdelivery/JFAMOSDelivery/jfamosdelivery/.dart_tool/flutter_build/c0ec4bfe11c84de97b0557ad244bec17/kernel_snapshot.d
Invalid depfile: /home/themahi19/Jfamosdelivery/JFAMOSDelivery/jfamosdelivery/.dart_tool/flutter_build/c0ec4bfe11c84de97b0557ad244bec17/kernel_snapshot.d
: Error: Not found: 'dart:html'
import 'dart:html' as html;
^
: Error: Not found: 'dart:html'
import 'dart:html' as html;
^
: Error: Not found: 'dart:html'
import 'dart:html' as html;
^
: Error: Not found: 'dart:html'
import 'dart:html' as html;
^
: Error: Not found: 'dart:html'
import 'dart:html' as html;
^
: Error: Not found: 'dart:html'
import 'dart:html';
^
: Error: Not found: 'dart:js'
export 'dart:js' show allowInterop, allowInteropCaptureThis;
^
: Error: Type 'html.File' not found.
static Future<html.File?> _pickFile(String type) async {
^^^^^^^^^
: Error: Type 'html.File' not found.
Future<List<html.File>?> _pickMultiFiles(String type) async {
^^^^^^^^^
: Error: Type 'html.File' not found.
static Future<html.File?> getImageAsFile() {
^^^^^^^^^
: Error: Type 'html.File' not found.
static Future<List<html.File>?> getMultiImagesAsFile() {
^^^^^^^^^
: Error: Type 'html.File' not found.
static Future<html.File?> getVideoAsFile() {
^^^^^^^^^
: Error: Type 'html.File' not found.
extension FileModifier on html.File {
^^^^^^^^^
: Error: Type 'html.EventListener' not found.
external ui.VoidCallback addPopStateListener(html.EventListener fn);
^^^^^^^^^^^^^^^^^^
: Error: Type 'html.Location' not found.
html.Location get _location => html.window.location;
^^^^^^^^^^^^^
: Error: Type 'html.History' not found.
html.History get _history => html.window.history;
^^^^^^^^^^^^
: Error: Type 'html.EventListener' not found.
void addPopStateListener(html.EventListener fn) {
^^^^^^^^^^^^^^^^^^
: Error: Type 'html.EventListener' not found.
void removePopStateListener(html.EventListener fn) {
^^^^^^^^^^^^^^^^^^
: Error: Type 'AnchorElement' not found.
final AnchorElement _urlParsingNode = AnchorElement();
^^^^^^^^^^^^^
: Error: Type 'Element' not found.
final Element? _baseElement = document.querySelector('base');
^^^^^^^
: Error: 'File' isn't a type.
final completer = Completer<List<html.File>?>();
^^^^
: Error: Method not found: 'FileUploadInputElement'.
final input = html.FileUploadInputElement() as html.InputElement;
^^^^^^^^^^^^^^^^^^^^^^
: Error: 'InputElement' isn't a type.
final input = html.FileUploadInputElement() as html.InputElement;
^^^^^^^^^^^^
: Error: 'Event' isn't a type.
void changeEventListener(html.Event e) {
^^^^^
: Error: 'File' isn't a type.
final resultFuture = files.map<Future<html.File>>((file) async {
^^^^
: Error: Method not found: 'FileReader'.
final reader = html.FileReader();
^^^^^^^^^^
: Error: 'Event' isn't a type.
void cancelledEventListener(html.Event e) {
^^^^^
: Error: Undefined name 'window'.
html.window.removeEventListener('focus', cancelledEventListener);
^^^^^^
: Error: Undefined name 'window'.
html.window.addEventListener('focus', cancelledEventListener);
^^^^^^
: Error: Undefined name 'document'.
html.document.body!.append(input);
^^^^^^^^
: Error: 'File' isn't a type.
final completer = Completer<List<html.File>?>();
^^^^
: Error: Method not found: 'FileUploadInputElement'.
final input = html.FileUploadInputElement();
^^^^^^^^^^^^^^^^^^^^^^
: Error: 'Event' isn't a type.
void changeEventListener(html.Event e) {
^^^^^
: Error: 'File' isn't a type.
final resultsFutures = files.map<Future<html.File>>((file) async {
^^^^
: Error: Method not found: 'FileReader'.
final reader = html.FileReader();
^^^^^^^^^^
: Error: 'Event' isn't a type.
void cancelledEventListener(html.Event e) {
^^^^^
: Error: Undefined name 'window'.
html.window.removeEventListener('focus', cancelledEventListener);
^^^^^^
: Error: Undefined name 'window'.
html.window.addEventListener('focus', cancelledEventListener);
^^^^^^
: Error: Undefined name 'document'.
html.document.body!.append(input);
^^^^^^^^
: Error: Method not found: 'FileReader'.
final reader = html.FileReader();
^^^^^^^^^^
: Error: Method not found: 'FileUploadInputElement'.
final input = html.FileUploadInputElement();
^^^^^^^^^^^^^^^^^^^^^^
: Error: Undefined name 'document'.
html.document.body!.append(input);
^^^^^^^^
: Error: Method not found: 'FileReader'.
final reader = html.FileReader();
^^^^^^^^^^
: Error: Method not found: 'FileUploadInputElement'.
final input = html.FileUploadInputElement();
^^^^^^^^^^^^^^^^^^^^^^
: Error: Undefined name 'document'.
html.document.body!.append(input);
^^^^^^^^
: Error: Method not found: 'FileReader'.
final reader = html.FileReader();
^^^^^^^^^^
: Warning: Operand of null-aware operation '!' has type 'WidgetsBinding' which excludes null.
- 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../../../snap/flutter/common/flutter/packages/flutter/lib/src/widgets/binding.dart').
WidgetsBinding.instance!.addPostFrameCallback((_) {
^
: Error: Method not found: 'allowInterop'.
getPath: allowInterop(strategy.getPath),
^^^^^^^^^^^^
: Error: Method not found: 'allowInterop'.
getState: allowInterop(strategy.getState),
^^^^^^^^^^^^
: Error: Method not found: 'allowInterop'.
addPopStateListener: allowInterop(strategy.addPopStateListener),
^^^^^^^^^^^^
: Error: Method not found: 'allowInterop'.
prepareExternalUrl: allowInterop(strategy.prepareExternalUrl),
^^^^^^^^^^^^
: Error: Method not found: 'allowInterop'.
pushState: allowInterop(strategy.pushState),
^^^^^^^^^^^^
: Error: Method not found: 'allowInterop'.
replaceState: allowInterop(strategy.replaceState),
^^^^^^^^^^^^
: Error: Method not found: 'allowInterop'.
go: allowInterop(strategy.go),
^^^^^^^^^^^^
: Error: 'EventListener' isn't a type.
external ui.VoidCallback addPopStateListener(html.EventListener fn);
^^^^^^^^^^^^^
: Error: Undefined name 'window'.
html.Location get _location => html.window.location;
^^^^^^
: Error: Undefined name 'window'.
html.History get _history => html.window.history;
^^^^^^
: Error: 'EventListener' isn't a type.
void addPopStateListener(html.EventListener fn) {
^^^^^^^^^^^^^
: Error: Undefined name 'window'.
html.window.addEventListener('popstate', fn);
^^^^^^
: Error: 'EventListener' isn't a type.
void removePopStateListener(html.EventListener fn) {
^^^^^^^^^^^^^
: Error: Undefined name 'window'.
html.window.removeEventListener('popstate', fn);
^^^^^^
: Error: 'AnchorElement' isn't a type.
final AnchorElement _urlParsingNode = AnchorElement();
^^^^^^^^^^^^^
: Error: Method not found: 'AnchorElement'.
final AnchorElement _urlParsingNode = AnchorElement();
^^^^^^^^^^^^^
: Error: 'Element' isn't a type.
final Element? _baseElement = document.querySelector('base');
^^^^^^^
: Error: Undefined name 'document'.
final Element? _baseElement = document.querySelector('base');
^^^^^^^^
: Error: Method not found: 'webOnlySetPluginHandler'.
ui.webOnlySetPluginHandler(handleFrameworkMessage);
^^^^^^^^^^^^^^^^^^^^^^^
Unhandled exception:
FileSystemException(uri=org-dartlang-untranslatable-uri:dart%3Ahtml; message=StandardFileSystem only supports file:* and data:* URIs)
#0 StandardFileSystem.entityForUri (package:front_end/src/api_prototype/standard_file_system.dart:34:7)
#1 asFileUri (package:vm/kernel_front_end.dart:652:37)
#2 writeDepfile (package:vm/kernel_front_end.dart:792:21)
<asynchronous suspension>
#3 FrontendCompiler.compile (file:///b/s/w/ir/cache/builder/sdk/pkg/frontend_server/lib/frontend_server.dart:615:9)
<asynchronous suspension>
#4 starter (file:///b/s/w/ir/cache/builder/sdk/pkg/frontend_server/lib/frontend_server.dart:1433:12)
<asynchronous suspension>
#5 main (file:///b/s/w/ir/cache/builder/sdk/pkg/frontend_server/bin/frontend_server_starter.dart:10:14)
<asynchronous suspension>
FAILURE: Build failed with an exception.
* Where:
Script '/home/themahi19/snap/flutter/common/flutter/packages/flutter_tools/gradle/flutter.gradle' line: 1156
* What went wrong:
Execution failed for task ':app:compileFlutterBuildDebug'.
> Process 'command '/home/themahi19/snap/flutter/common/flutter/bin/flutter'' finished with non-zero exit value 1
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 34s
Exception: Gradle task assembleDebug failed with exit code 1
Exited
在文件中包含 Web導入將在移動設備上運行期間引發錯誤。 要解決此問題，您可以使用條件導入或創建兩個文件（ class/widget ），一個用於移動設備，另一個用於網絡，並根據平台選擇使用哪一個。 有關更多詳細信息，請查看此帖子。
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