imageFromId function
根据Storage ID获取图像
storageId 图像的存储ID
返回 FileImage 对象,如果文件不存在则返回null
Implementation
FileImage? imageFromId(String storageId) {
String destPath = FilePath.imagePath + storageId;
print('load image from -> $destPath');
File file = File(destPath);
if (file.existsSync()) {
return FileImage(file);
} else {
print('image file not exists!');
return null;
}
}