有没有办法访问转换为 Uint8List 的视频文件路径
Is there any way to access the video file path that converted to Uint8List
在下面的flutter_material_pickers插件代码中,我想获取视频文件路径,但是showMaterialFilePicker函数返回的file变量是Uint8List类型。
void onTap() {
if (value == null) {
showMaterialFilePicker(
fileType: Filetype.video,
onChanged: (file) => setState(() {
didChange(file);
if (widget.onChanged != null) widget.onChanged(file);
}),
);
} else {
_showUnattachDialog();
}
}
参考flutter_material_pickers的这个函数,代码为:
import 'dart:async';
import 'dart:io';
import 'dart:typed_data';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
/// Allows selection of a file.
Future<void> showMaterialFilePicker({
BuildContext context,
FileType fileType = FileType.image,
String fileExtension,
ValueChanged<Uint8List> onChanged,
}) async {
try {
File file = await FilePicker.getFile(type: fileType);
var data = file.readAsBytesSync();
if (onChanged != null && file != null) onChanged(data);
} catch (error) {
if (error.runtimeType is PlatformException) return; // user clicked twice
if (error.runtimeType is NoSuchMethodError) return; // user canceled dialog
throw error;
}
}
不,没有从 Uint8List
读取路径的选项。这种类型只存储字节数据。您甚至可以通过比较来自不同位置的两个相同图像的 readAsBytes()
结果来测试它。
您可以使用 file_picker (this package is used in flutter_material_pickers as well) and get File
as in Usage 部分,并且您可以从 File
访问路径。
在下面的flutter_material_pickers插件代码中,我想获取视频文件路径,但是showMaterialFilePicker函数返回的file变量是Uint8List类型。
void onTap() {
if (value == null) {
showMaterialFilePicker(
fileType: Filetype.video,
onChanged: (file) => setState(() {
didChange(file);
if (widget.onChanged != null) widget.onChanged(file);
}),
);
} else {
_showUnattachDialog();
}
}
参考flutter_material_pickers的这个函数,代码为:
import 'dart:async';
import 'dart:io';
import 'dart:typed_data';
import 'package:file_picker/file_picker.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
/// Allows selection of a file.
Future<void> showMaterialFilePicker({
BuildContext context,
FileType fileType = FileType.image,
String fileExtension,
ValueChanged<Uint8List> onChanged,
}) async {
try {
File file = await FilePicker.getFile(type: fileType);
var data = file.readAsBytesSync();
if (onChanged != null && file != null) onChanged(data);
} catch (error) {
if (error.runtimeType is PlatformException) return; // user clicked twice
if (error.runtimeType is NoSuchMethodError) return; // user canceled dialog
throw error;
}
}
不,没有从 Uint8List
读取路径的选项。这种类型只存储字节数据。您甚至可以通过比较来自不同位置的两个相同图像的 readAsBytes()
结果来测试它。
您可以使用 file_picker (this package is used in flutter_material_pickers as well) and get File
as in Usage 部分,并且您可以从 File
访问路径。