Flutter 推送通知图标显示白色

Question

使用 flutter_local_notification 的 Flutter 推送通知在某些设备上显示白框如何解决此问题 大多数设备正确显示通知图标，但某些设备存在问题

res/drawable/aaaa_logo.png 是我添加的唯一图标

AndroidManifest.xml

Answer 1

这就是我处理这个问题的方式

static Future<void> showBigPictureNotificationHiddenLargeIcon(
    String? title,
    String? body,
    String? orderID,
    String image,
    FlutterLocalNotificationsPlugin fln,
    int? petId,
  ) async {
    final String largeIconPath = await _downloadAndSaveFile(image, 'largeIcon');
    final String bigPicturePath =
        await _downloadAndSaveFile(image, 'bigPicture');
    final BigPictureStyleInformation bigPictureStyleInformation =
        BigPictureStyleInformation(
      FilePathAndroidBitmap(bigPicturePath),
      hideExpandedLargeIcon: true,
      contentTitle: title,
      htmlFormatContentTitle: true,
      summaryText: body,
      htmlFormatSummaryText: true,
    );
    final AndroidNotificationDetails androidPlatformChannelSpecifics =
        AndroidNotificationDetails(
      'your channel id',
      'your channel name',
      largeIcon: FilePathAndroidBitmap(largeIconPath),
      priority: Priority.max,
      playSound: true,
      styleInformation: bigPictureStyleInformation,
      importance: Importance.max,
      sound: const RawResourceAndroidNotificationSound('notification'),
    );
    final NotificationDetails platformChannelSpecifics =
        NotificationDetails(android: androidPlatformChannelSpecifics);
    await fln.show(0, title, body, platformChannelSpecifics,
        payload: petId != null ? "petId:$petId" : orderID);
  }

  static Future<String> _downloadAndSaveFile(
      String url, String fileName) async {
    final Directory directory = await getApplicationDocumentsDirectory();
    final String filePath = '${directory.path}/$fileName';
    final Response response = await Dio()
        .get(url, options: Options(responseType: ResponseType.bytes));
    final File file = File(filePath);
    await file.writeAsBytes(response.data);
    return filePath;
  }