downloadUpdateAndroid static method

Future<void> downloadUpdateAndroid(String url, String versionName, dynamic onProgress(double), UpdateCenterConfig config, DownloadState downloadState,)

Downloads an update for Android platform.

url - URL of the file to be downloaded. versionName - Name of the version to be downloaded. onProgress - Callback function to handle progress updates. config - Configuration settings for the update process. downloadState - State of the download process.

Implementation

static Future<void> downloadUpdateAndroid(
  String url,
  String versionName,
  Function(double) onProgress,
  UpdateCenterConfig config,
  DownloadState downloadState,
) async {
  downloadState.isDownloading.value = true;

  var notificationProvider = NotificationProvider(config: config);

  var response = await h.Client().send(h.Request('GET', Uri.parse(url)));

  Directory tempDirectory = await MemoryProvider.directoryAndroid();

  String fileName = '${tempDirectory.path}/${url.split('/').last}';

  final maxProgress = response.contentLength ?? 0;

  int progress = 0;

  double lastNotifiedProgress = 0.0;

  final file = await MemoryProvider.getLocalFileAndroid(url);

  var fileStream = file.openWrite();

  response.stream.listen(
    (List<int> newBytes) {
      notificationProvider.cancelNotification(3000);

      progress += newBytes.length;

      fileStream.add(newBytes);

      // Calculate progress
      double currentProgress = progress / maxProgress;
      onProgress(currentProgress);

      // Inside your download logic
      downloadState.progress.value =
          currentProgress; // currentProgress is a value between 0.0 and 1.0
      downloadState.progressText.value =
          "${formatBytes(progress, 2)}/${formatBytes(maxProgress, 2)}";

      // Throttle the notification update
      if (currentProgress - lastNotifiedProgress >= 0.02 || currentProgress == 1.0) {
        notificationProvider.showDownloadProgress(maxProgress, progress, versionName);
        lastNotifiedProgress = currentProgress;
      }
    },
    onDone: () async {
      await fileStream.flush();
      await fileStream.close();
      notificationProvider.cancelNotification(1000);

      await OpenFilex.open(fileName);

      downloadState.isDownloading.value = false;
    },
    onError: (e) async {
      await fileStream.close();

      downloadState.isDownloading.value = false;

      notificationProvider.cancelNotification(1000);

      // Show notification about download failure
      notificationProvider.showGenericNotification(
          id: 3000,
          title: config.notificationConfig.downloadFailedNotificationTitleText,
          body: config.notificationConfig.downloadFailedNotificationBodyText);

      log(e);
    },
    cancelOnError: true,
  );
}