pickPhoto function

Implementation

Future<String?> pickPhoto(BuildContext context, bool isCam) async {
  ImagePicker _picker = ImagePicker();
  final permissionList;
  // 显示顶部说明弹框
  showTopWarningDialog(
      context: context,
      title: isCam
          ? S.of(context).permissionCameraTitle
          : S.of(context).permissionStorageTitle,
      content: isCam
          ? S.of(context).permissionCameraContent
          : S.of(context).permissionStorageContent);
  if (Platform.isIOS) {
    permissionList = [Permission.photos];
  } else if (Platform.isAndroid) {
    if (await PlatformUtils.isAboveAndroidT()) {
      permissionList = [Permission.photos, Permission.videos];
    } else {
      permissionList = [Permission.storage];
    }
  } else {
    permissionList = [];
  }
  if (!isCam) {
    final granted = await PermissionsHelper.requestPermission(permissionList);
    // 关闭说明弹框
    Navigator.of(context).pop();
    if (!granted) {
      Fluttertoast.showToast(msg: S.of(context).permissionSystemCheck);
      return null;
    }
  } else {
    final granted =
        await PermissionsHelper.requestPermission([Permission.camera]);
    // 关闭说明弹框
    Navigator.of(context).pop();
    if (!granted) {
      Fluttertoast.showToast(msg: S.of(context).permissionSystemCheck);
      return null;
    }
  }
  final XFile? photo = await _picker.pickImage(
      source: isCam ? ImageSource.camera : ImageSource.gallery,
      imageQuality: 80);
  if (photo != null) {
    return photo.path;
  }
  return null;
}