Flutter 压缩相机图像

Question

我想通过相机点击照片并想压缩然后上传到服务器

我已经包含了图像压缩依赖，它向我显示了错误getter 'absolute' 没有为类型'PickedFile' 定义。

编写了点击图片上传到服务器的代码 // 从相机拍照

Widget bottomSheet() {
return Container(
  height: 100.0,
  width: MediaQuery.of(context).size.width,
  margin: EdgeInsets.symmetric(
    horizontal: 20,
    vertical: 20,
  ),
  child: Column(
    children: <Widget>[
      Text(
        "Take A Picture",
        style: TextStyle(
          fontSize: 20.0,
        ),
      ),
      SizedBox(
        height: 20,
      ),
      Row(mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[
        // ignore: deprecated_member_use
        FlatButton.icon(
          icon: Icon(Icons.camera),
          onPressed: () {
            takePhoto(ImageSource.camera);
          },
          label: Text("Camera"),
        ),
      ])
    ],
  ),
);
}

void takePhoto(source) async {
final pickedFile = await _picker.getImage(
  source: source,
);
setState(() {
  _imageFile = pickedFile;
});
await FlutterImageCompress.compressWithFile(
  _imageFile.absolute.path,
  minWidth: 2300,
  minHeight: 1500,
  quality: 94,
  rotate: 90,
);
 }

Answer 1

不使用 FlutterImageCompress.compressWithFile 只需在 _picker.getImage 中添加 imageQuality

_picker.getImage(
      source:ImageSource.camera,
      minWidth: 2300,
      minHeight: 1500,
      imageQuality: 75
)

随着图像质量值大小的改变，图像的大小发生变化