我正在实施一个项目，用户可以通过在对话框中选择（从+到+）来下载简短的mp3，所有声音都下载为一个（文件数可以达到300个文件，每个文件大小约为100kb）。
我设法使所有工作顺利进行。.已成功创建带有应用程序名称的文件夹，已成功在App文件夹内创建带有引用者名称的子文件夹，并以正确的名称下载文件并将其保存在正确的子文件夹中，可应要求播放mp3文件。
我面临的唯一问题是下载通知（即使同时成功下载了所有文件，多个通知也会同时运行并显示永远下载。
这是我的完整代码：
private void createDirectory() {
String folderName = getResources().getString(R.string.app_name);
File file = new File(Environment.getExternalStorageDirectory() + "/" + folderName);
if (!file.exists()) {
file.mkdir();
Log.w("Folder ...", folderName + " directory has been created");
} else {
Log.w("Folder ...", folderName + " folder already exists");
}
createSubDirectory();
}
private void createSubDirectory() {
String subfolderName = getResources().getString(R.string.app_name) + "/" + Sreciter;
File file = new File(Environment.getExternalStorageDirectory() + "/" + subfolderName);
if (!file.exists()) {
file.mkdir();
Log.w("Folder ...", subfolderName + " Subdirectory has been created");
} else {
Log.w("Folder ...", subfolderName + " folder already exists");
}
prepareDownload();
}
private void prepareDownload() {
DatabaseAccess databaseAccess = DatabaseAccess.getInstance(Settings.this);
int from = Integer.valueOf(Sfrom) + 1;
int to = Integer.valueOf(Sto) + 2;
Log.w("Values", "from " + from + " to " + to);
list_ids.clear();
list_urls.clear();
list_paths.clear();
databaseAccess.open();
for (int i = from; i < to; i++) {
Ayah_download_id = String.valueOf(databaseAccess.getAudioID(Ssorah, String.valueOf(i)));
url = "https://alitkaan.com/waratil/" + reciterName + "/" + Ayah_download_id + ".mp3";
storeLPath = Environment.getExternalStorageDirectory() + "/" + getResources().getString(R.string.app_name) + "/" + Sreciter;
File optputfile = new File(storeLPath, Ayah_download_id + ".mp3");
if (!optputfile.exists()) {
list_ids.add(Ayah_download_id);
list_urls.add(url);
list_paths.add(storeLPath);
} else {
Log.w("file", "exists");
}
}
databaseAccess.close();
File basmalah = new File(storeLPath, "001001.mp3");
if(!basmalah.exists()){
list_ids.add("001001");
list_urls.add("https://alitkaan.com/waratil/" + reciterName + "/001001.mp3");
list_paths.add(storeLPath);
}
if (list_ids.size() < 1) {
Utils.CustomToast(Settings.this, "تم تحميل هذه الملفات مسبقًا.");
} else {
downloadAsyncTask task = new downloadAsyncTask(this);
task.execute();
}
}
private boolean CNCS() {
boolean wifiConnected = false;
boolean mobileConnected = false;
boolean net_available = false;
ConnectivityManager connMang = (ConnectivityManager)
getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo activeInfo = connMang.getActiveNetworkInfo();
if (activeInfo != null && activeInfo.isConnected()) {
wifiConnected = activeInfo.getType() == ConnectivityManager.TYPE_WIFI;
mobileConnected = activeInfo.getType() == ConnectivityManager.TYPE_MOBILE;
if (wifiConnected) {
ConnectionType = "WIFI";
net_available = true;
} else if (mobileConnected) {
ConnectionType = "Mobile";
net_available = true;
}
} else {
ConnectionType = "No Connection";
net_available = false;
}
return net_available;
}
private static class downloadAsyncTask extends AsyncTask<Void, Void, String> {
private WeakReference<Settings> settingsWeakReference;
downloadAsyncTask(Settings activity) {
settingsWeakReference = new WeakReference<Settings>(activity);
}
@Override
protected String doInBackground(Void... voids) {
Settings activity = settingsWeakReference.get();
DownloadManager manager = (DownloadManager) activity.getSystemService(Context.DOWNLOAD_SERVICE);
long requestId;
if (activity == null || activity.isFinishing()) {
return "لم يتم التحميل";
}
for (int y = 0; y < activity.list_ids.size(); y++) {
String d_id = activity.list_ids.get(y);
String d_url = activity.list_urls.get(y);
String d_path = activity.list_paths.get(y);
int count = y + 1;
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(d_url));
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
request.setAllowedOverRoaming(false);
request.setTitle(" تحميل " + activity.list_ids.size() + "/" + count);
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_HIDDEN);
request.setDestinationUri(Uri.fromFile(new File(d_path, d_id + ".mp3")));
requestId = manager.enqueue(request);
if (count == activity.list_ids.size()) {
activity.last_downloaded = requestId;
}
Log.w("Downloaded .. ", d_id + ".mp3");
}
return "جاري التحميل ...";
}
@Override
protected void onPostExecute(String s) {
super.onPostExecute(s);
Settings activity = settingsWeakReference.get();
if (activity == null || activity.isFinishing()) {
return;
}
if (!activity.CNCS()) {
Utils.CustomToast(activity, "لا يوجد اتصال بالنت .. سيتم تحميل الملفات تلقائياً عند الاتصال بالنت");
} else {
Utils.CustomToast(activity, s);
}
}
}
作为解决方案，我已经隐藏了下载通知，但这不是我想要的。.我只想显示（一个）通知，其中包含要下载的文件总数作为标题，而文件名作为标题下载。说明。
请帮助！
答案比我还简单...