Question

我正在使用flutter image_picker：^ 0.6.0 + 17来获取应用中商品的图片它在模拟器上绝对可以正常工作，但是在真正的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。

我尝试将模拟器用作与我的设备相同的api级别我正在Redmi 6A Android Oreo 8.1上对其进行测试没发现扑医生没问题或抖动分析从库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后的调试日志然后应用重新启动

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，只需从图像选择器包中将source更改为ImageSource.camera

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);
  }

预先感谢

Answer 1

在跑步者Info.plist文件中，为我添加这些作品

<string>Need to upload image</string>
<key>NSCameraUsageDescription</key>
<string>Need to upload image</string>
<key>NSMicrophoneUsageDescription</key>
<string>Need to upload image</string>

在flutter中从image_picker包中打开相机会导致真实设备上的应用崩溃，但在模拟器中工作正常（android）

1 个答案: