我正在使用 flutter image_picker: ^0.6.0+17 在应用程序中获取产品的图像，它在模拟器上绝对可以正常工作，但在真正的 android 设备上，当我单击“打开相机”按钮时，应用程序崩溃并重新启动。
我曾尝试使用与我的设备相同的 api 级别的模拟器我在 redmi 6A android oreo 8.1 上测试它没有发现问题颤振医生或颤振分析从画廊中选择图像对两者都很好。
import 'dart:io';
import 'package:firstapp/models/product.dart';
import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
class ImageInput extends StatefulWidget {
final Function setImage;
final Product product;
ImageInput(this.setImage, this.product);
@override
State<StatefulWidget> createState() {
return _ImageInputState();
}
}
class _ImageInputState extends State<ImageInput> {
File _imageFile;
Future _getImage(BuildContext context, ImageSource source) async {
print('getting image');
File image = await ImagePicker.pickImage(source: source, maxWidth: 600);
if(image == null){
return null;
}
setState(() {
print('file = image');
_imageFile = image;
});
print('setting image');
widget.setImage(image);
Navigator.pop(context);
}
void _openImagePicker(BuildContext context) {
showModalBottomSheet(
context: context,
builder: (BuildContext context) {
return Container(
padding: EdgeInsets.all(10),
height: 150,
child: Column(children: <Widget>[
Text(
'Pick an Image',
style: TextStyle(
fontWeight: FontWeight.bold,
),
),
SizedBox(
height: 10,
),
FlatButton(
textColor: Theme.of(context).primaryColor,
child: Text('Use Camera'),
onPressed: () {
_getImage(context, ImageSource.camera);
},
),
FlatButton(
textColor: Theme.of(context).primaryColor,
child: Text('Use Gallery'),
onPressed: () {
_getImage(context, ImageSource.gallery);
},
)
]),
);
});
}
@override
Widget build(BuildContext context) {
final buttonColor = Theme.of(context).primaryColor;
Widget previewImage = Text('Please select an image.');
if (_imageFile != null) {
previewImage = Image.file(
_imageFile,
height: 300.0,
width: MediaQuery.of(context).size.width,
fit: BoxFit.cover,
alignment: Alignment.center,
);
} else if (widget.product != null) {
previewImage = Image.network(
widget.product.image,
height: 300.0,
width: MediaQuery.of(context).size.width,
fit: BoxFit.cover,
alignment: Alignment.center,
);
}
return Column(
children: <Widget>[
OutlineButton(
onPressed: () {
_openImagePicker(context);
},
borderSide: BorderSide(color: buttonColor, width: 1),
child: Row(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Icon(
Icons.camera_alt,
color: buttonColor,
),
SizedBox(
width: 5.0,
),
Text(
'Add Image',
style: TextStyle(color: buttonColor),
)
],
),
),
SizedBox(
height: 10,
),
previewImage,
],
);
}
}
这些是我按下使用相机然后应用程序重新启动后的调试日志
I/flutter (20143): getting image
D/Surface (20143): Surface::disconnect(this=0x9577d000,api=1)
D/GraphicBuffer(20143): unregister, handle(0xaa60e900) (w:720 h:1440 s:736 f:0x1 u:b00)
D/GraphicBuffer(20143): unregister, handle(0xaa610280) (w:720 h:1440 s:736 f:0x1 u:b00)
D/GraphicBuffer(20143): unregister, handle(0xaa610640) (w:720 h:1440 s:736 f:0x1 u:b00)
D/Surface (20143): Surface::disconnect(this=0x9577d000,api=-1)
D/Surface (20143): Surface::disconnect(this=0x9577c000,api=1)
D/GraphicBuffer(20143): unregister, handle(0x94f956c0) (w:720 h:1440 s:736 f:0x1 u:b00)
V/PhoneWindow(20143): DecorView setVisiblity: visibility = 4, Parent = ViewRoot{f21fea2 com.example.firstapp/com.example.firstapp.MainActivity,ident = 0}, this = DecorView@5af733[MainActivity]
Lost connection to device.
Exited (sigterm)
这些是我正在使用的简单代码，只需source从ImageSource.camera图像选择器包中更改
Future _getImage(BuildContext context, ImageSource source) async {
print('getting image');
File image = await ImagePicker.pickImage(source: source, maxWidth: 600);
if(image == null){
return null;
}
setState(() {
print('file = image');
_imageFile = image;
});
print('setting image');
widget.setImage(image);
Navigator.pop(context);
}
提前致谢