颤振图像选取器崩溃

Question

我试图在flutter应用程序上使用image_picker，一切都很好，直到画廊打开，我选择图像，然后应用程序将崩溃并重新启动。

在此之前，它工作得很好，像1个月前，但现在它不是。有解决办法吗

这是我的代码。

Future _pickImage() async {
try {
final image = await ImagePicker().pickImage(source: ImageSource.gallery);
if (image == null) return;
final imageTemporary = File(image.path);
setState(() {
_image = imageTemporary;
});
} catch (error) {
print("error: $error");
}
// setState(() {
//   _image = img;
// });
}

File? _image;
Future _pickImage() async {
try {
final image = await ImagePicker().pickImage(source: ImageSource.gallery);
if (image == null) return;
final imageTemporary = File(image.path);
setState(() {
_image = imageTemporary;
});
} catch (error) {
print("error: $error");
}

}

Answer 1

这段代码可以帮助您。

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';


class PickImage extends StatefulWidget {
const PickImage({Key? key}) : super(key: key);
@override
State<PickImage> createState() => _PickImageState();
}
class _PickImageState extends State<PickImage> {
XFile? _image;
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: SingleChildScrollView(
child: Column(
children: [
TextButton(
onPressed: _imageHandler, child: const Text("Pick image")),
if (_image != null) Image.file(File(_image!.path))
],
),
),
);
}
Future _imageHandler() async {
try {
final XFile? imagePicker =
await ImagePicker().pickImage(source: ImageSource.gallery);
if (imagePicker != null) {
_image = imagePicker;
} else {
/// user canceled
}
} catch (e) {
print(e);
}
}
}