flutter 拍照从相册获取照片

最新推荐文章于 2025-02-27 17:03:33 发布

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本文介绍如何使用Flutter的image_picker库从相机或相册选择图片，并实现图片压缩处理。通过设置图片来源为相机或相册，可以获取图片路径，进一步读取文件大小，当超过指定阈值时进行压缩。

三方库image_picker

从相册获取图片并进行处理

    //  final pickedFile = await ImagePicker().getImage(source: ImageSource.camera);
    var pickedFile = await ImagePicker().getImage(source: ImageSource.gallery);
    var filepath = File(pickedFile.path);
    var sizeee = filepath.lengthSync() / 1024;
    if (sizeee <=1024){
      return filepath;
    }
    
    var newImagee = await FlutterNativeImage.compressImage(pickedFile.path, quality: 50);
    return newImagee;

从相机获取图片并进行处理

     final pickedFile = await ImagePicker().getImage(source: ImageSource.camera);
   // var pickedFile = await ImagePicker().getImage(source: ImageSource.gallery);
    var filepath = File(pickedFile.path);
    var sizeee = filepath.lengthSync() / 1024;
    if (sizeee <=1024){
      return filepath;
    }
    
    var newImagee = await FlutterNativeImage.compressImage(pickedFile.path, quality: 50);
    return newImagee;