我们在安卓里面，下载文件以后，打开文件夹就可以看到，但是苹果手机上面打开文件夹，看不到应用，
想要在苹果手机上显示应用的文件夹，那要怎么做呢？
1，dio下载文件保存到本地
ios设置文件夹是 getTemporaryDirectory()，不要使用getApplicationDocumentsDirectory（）看不到
getTemporaryDirectory()默认目录是Library/Caches，这个目录没有暴露
暴露的目录是Documents
将Library/Caches替换为Documents
dirloc= dirloc.replaceFirst("Library/Caches", "Documents/");
Future<void> downloadSaveFile(EmailContent emailContent, int index) async {
if (ObjectUtil.isNotEmpty(emailContent.attachments[index].download) &&
emailContent.attachments[index].download) {
FilePickerResult result =
await FilePicker.platform.pickFiles(allowMultiple: false);
return;
}
final FileSystem fs = MemoryFileSystem();
Map<String, dynamic> user = await SharedPrefercnes.getString('email_user');
userInfo = EmailUser.fromJson(user);
Attachments attachments = emailContent.attachments[index];
String downloadFile =
'${Api.download_file}/?raw_name=${widget.mailBoxType}&uid=${widget.uid}&sid=${attachments.sid}';
Map<String, dynamic> headers = {
"Authorization": "JWT ${userInfo.data.emailToken}",
'Accept': 'application/json, text/plain, */*',
};
String url = Api.ip + downloadFile;
Dio dio = Dio();
PermissionStatus status = await PermissionHandler()
.checkPermissionStatus(PermissionGroup.storage);
//判断如果还没拥有读写权限就申请获取权限
if (status != PermissionStatus.granted) {
var map = await PermissionHandler()
.requestPermissions([PermissionGroup.storage]).then((value) {
print(value);
});
if (map[PermissionGroup.storage] == PermissionStatus.granted) {
status = PermissionStatus.granted;
}
}
print(attachments.name);
if (true) {
String dirloc = "";
if (Platform.isAndroid) {
dirloc = "/sdcard/download/";
} else {
dirloc = (await getTemporaryDirectory()).path;
dirloc= dirloc.replaceFirst("Library/Caches", "Documents/");
}
var randid = random.nextInt(10000);
try {
//2、创建文件
FileUtils.mkdir([dirloc]);
String token = "JWT ${userInfo.data.emailToken}";
var options = Options(headers: <String, String>{
"Authorization": token,
});
print(url);
//3、使用 dio 下载文件
await dio.download(url, dirloc + attachments.name, options: options,
onReceiveProgress: (receivedBytes, totalBytes) {
setState(() {
downloading = true;
//4、连接资源成功开始下载后更新状态
progress = (receivedBytes / totalBytes);
});
});
} catch (e) {
print(e);
}
// setState(() async {
downloading = false;
progress = 0;
path = dirloc + attachments.name;
print(path);
emailContent.attachments[index].download = true;
ToastUtils.getInstance().showToast("下载完成,请在文件夹中查看");
// });
} else {
setState(() {
progress = 0;
_onPressed = () {
downloadSaveFile(emailContent, index);
};
});
}
}
2，共享应用目录到苹果手机文件夹，
在info.list 添加Supports Document Browser ，
Supports opening documents in place，
UIFileSharingEnabled，
设置为true。
大功告成，打开苹果文件夹，就可以看到本应用的目录，打开目录就看到应用下载的文件啦！
