I have an react-native app runs on native android9, now I want to use DownloadManager to download a file, it's a http resource. when download is begining, it doesn't show notification immediately, no downloading progress too, and waiting for many minutes it shows download failed. The DownloadManager.COLUMN_REASON is 1004, according the doc it means ERROR_HTTP_DATA_ERROR. I have set networkSecurityConfig in AndroidManifest.xml. If I change the file to a https resource, it works fine, but there still have a problem that it also doesn't show downloading progress in notification bar untill download completed. I have set NotificationVisibility to VISIBILITY_VISIBLE_NOTIFY_COMPLETED;AndroidManifest.xml
...<uses-permission android:name="android.permission.INTERNET" /><uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/><uses-permission android:name="android.permission.CAMERA" /><uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/><application android:name=".MainApplication" android:label="@string/app_name" android:icon="@mipmap/ic_launcher" android:roundIcon="@mipmap/ic_launcher_round" android:allowBackup="false" android:networkSecurityConfig="@xml/network_security_config" android:theme="@style/AppTheme"><uses-library android:name="org.apache.http.legacy" android:required="false" /><activity android:name=".MainActivity" ...><intent-filter><action android:name="android.intent.action.MAIN" /><category android:name="android.intent.category.LAUNCHER" /></intent-filter></activity><provider android:name="androidx.core.content.FileProvider" android:authorities="${applicationId}.fileprovider" android:grantUriPermissions="true" android:exported="false"><meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/file_paths" /></provider><receiver android:name="com.cityvoice.cubebrain.MyBroadcastReceiver"><intent-filter><action android:name="android.intent.action.DOWNLOAD_COMPLETE"/></intent-filter></receiver></application>...file_paths.xml
<?xml version="1.0" encoding="utf-8"?><resources><paths><external-files-path path="" name="Download" /></paths></resources>network_security_config.xml
<?xml version="1.0" encoding="utf-8"?><network-security-config><base-config cleartextTrafficPermitted="true"/></network-security-config>AndroidDownloadManager.java
public class AndroidDownloadManager { ... public AndroidDownloadManager(Context context, String url, String name) { this.context = context; this.url = url; this.name = name; } public AndroidDownloadManager setListener(AndroidDownloadManagerListener listener) { this.listener = listener; return this; } public void download() { DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url)); request.setAllowedOverRoaming(false); request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED); request.setTitle(name); request.setDescription("downloading......"); request.setVisibleInDownloadsUi(true); File file = new File(context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS), name); request.setDestinationUri(Uri.fromFile(file)); path = file.getAbsolutePath(); if (downloadManager == null) { downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE); } if (downloadManager != null) { if (listener != null) { listener.onPrepare(); } downloadId = downloadManager.enqueue(request); } context.registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE)); } private MyBroadcastReceiver receiver = new MyBroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { DownloadManager.Query query = new DownloadManager.Query(); Log.d(TAG, "onReceive >>>>"+ url); query.setFilterById(downloadId); Cursor cursor = downloadManager.query(query); if (cursor.moveToFirst()) { int status = cursor.getInt(cursor.getColumnIndex(DownloadManager.COLUMN_STATUS)); switch (status) { case DownloadManager.STATUS_PAUSED: break; case DownloadManager.STATUS_PENDING: break; case DownloadManager.STATUS_RUNNING: break; case DownloadManager.STATUS_SUCCESSFUL: if (listener != null) { listener.onSuccess(path); } cursor.close(); context.unregisterReceiver(receiver); break; case DownloadManager.STATUS_FAILED: if (listener != null) { listener.onFailed(new Exception("failed")); } cursor.close(); context.unregisterReceiver(receiver); break; } } } };}