Develop Reference

Image URL is downloaded as .Zip format

I have used DownloadManager class for image download. When I have used below image url in browser it is working fine. but when i have downloaded that image url using DownloadManager it is getting .zip format.
Image Url : Here
Below is my code of download Manager :
private void startDownload(String url) {
DownloadManager downloadManager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
Uri Download_Uri = Uri.parse(url);
DownloadManager.Request request = new DownloadManager.Request(Download_Uri);
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
request.setAllowedOverRoaming(true);
MimeTypeMap mimeTypeMap = MimeTypeMap.getSingleton();
String mimeString = mimeTypeMap.getMimeTypeFromExtension(MimeTypeMap.getFileExtensionFromUrl(url));
request.setMimeType(mimeString);
request.setTitle(getString(R.string.app_name));
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
//Set a description of this download, to be displayed in notifications (if enabled)
request.setDescription("Downloading " + txtDocName.getText().toString());
//Set the local destination for the downloaded file to a path within the application's external files directory
request.setDestinationInExternalFilesDir(this, Environment.DIRECTORY_DOWNLOADS, System.currentTimeMillis() + ".jpeg");
downloadManager.enqueue(request);
AppLog.showD(TAG, "downloadind started");
}

The provided URL returns zip as a type. You can check that using any dev tool on your browser as demonstrated in this screen shot

How to prevent application file deleted when uninstall the app in android

DownloadManager mgr = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
Uri downloadUri = Uri.parse(file_url);
DownloadManager.Request request = new DownloadManager.Request(downloadUri);
request.setAllowedNetworkTypes(
DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE)
.setTitle("")
.setDestinationInExternalPublicDir(Environment.DIRECTORY_PICTURES + "/MyApp", tsLong.toString() + ".jpg");
The path to download file is here:
new File(Environment.DIRECTORY_PICTURES + "/MyApp")
I found that once the app is uninstall the folder is also deleted, how to preserve that ?
thanks a lot.

How to detect the extension of file to download using DownloadManager in Android?

I start developing my very first Android project. In my project, I need to download media files, especially mp3 or mp4. I am downloading file using DownloadManager.
Here is my download code for mp3
private void downloadPodcast(int id)
{
String url = context.getResources().getString(R.string.api_endpoint)+"podcast/download?id="+String.valueOf(id);
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(url));
request.setDescription("Downloading...");
request.setTitle("Podcast");
request.setMimeType("audio/MP3");
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
request.allowScanningByMediaScanner();
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
}
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "audio.mp3");
DownloadManager manager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
manager.enqueue(request);
}
As you can see in my code, I am downloading only mp3 and setting the MIME type is constant. The file name and its extension is constant as well. What I want to do is to detect the file extension I will download. So can I set the MIME type programmatically and set the extension of file name. How can I achieve it in DownloadManager?

Though its quite late, however here is the answer:
You can get the extension of the file to download using the code below and add the extension to your file name.
String fileUrl = "http://someurl";
String fileName = "foobar";
String fileExtension = MimeTypeMap.getFileExtensionFromUrl(fileUrl);
// concatinate above fileExtension to fileName
fileName += "." + fileExtension;
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(fileUrl))
.setTitle(context.getString(R.string.app_name))
.setDescription("Downloading " + fileName)
.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE | DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE)
.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, fileName);
DownloadManager dm = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
dm.enqueue(request);

How I can download video in my application like we download or install apk file on google play?

I want to download video from URL in background like we install apk file in background from Google play. I want to show downloading indicator on notification bar same like it showing while we download or install apk file. if any suggestion or idea then suggest me how I can achieve this task in my project.

You can prefer android DownLoadManager. somehow want to do like this in your activity
String mUrl="your video url";
DownloadManager manager = (DownloadManager) getSystemService(DOWNLOAD_SERVICE);
Request request = new Request(Uri.parse(mUrl));
request.setDestinationInExternalFilesDir(getApplicationContext(), Environment.DIRECTORY_DOWNLOADS, your_fileName);
request.setNotificationVisibility(Request.VISIBILITY_VISIBLE);
request.setAllowedOverRoaming(false);
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
manager.enqueue(request);
setNotificationVisibility() -> show download notification in notification bar(window) with download progress also.
below are three methods where you can choose destination for your downloaded file path.
1. setDestinationInExternalFilesDir(Context context, String dirType, String subPath)
Set the local destination for the downloaded file to a path within the application's external files directory (as returned by getExternalFilesDir(String).
2. setDestinationInExternalPublicDir(String dirType, String subPath)
Set the local destination for the downloaded file to a path within the public external storage directory (as returned by getExternalStoragePublicDirectory(String)).
3. setDestinationUri(Uri uri)
Set the local destination for the downloaded file.

Use Download Manager,
private void for_call_download() {
File folder = Environment.getExternalStoragePublicDirectory(DOWNLOAD_FOLDER_NAME);
if (!folder.exists() || !folder.isDirectory()) {
folder.mkdirs();
}
try {
DownloadManager.Request request = new DownloadManager.Request(Uri.parse(APK_URL));
request.setDestinationInExternalPublicDir(DOWNLOAD_FOLDER_NAME, DOWNLOAD_FILE_NAME);
request.setTitle(SessionName);
request.setDescription("" + SessionDesc);
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
request.setVisibleInDownloadsUi(false);
request.setMimeType("application/cn.trinea.download.file");
downloadId = downloadManager.enqueue(request);
} catch (IllegalStateException i) {
showAlert(context, "Sorry Some Problem");
i.printStackTrace();
}
updateView();
status_download = true;
}

How to save downloaded file on sd card from download manager programmatically on android

In my application i have download(Image) feature which is used to download file from urls. The download happen should be shown in notification bar so that i used Download Manager class to download file. This is working fine but the downloaded image does not stored no where in the sdcard.
i have referred the url for the download manager.
my requirement is i need to save the download image to sdcard with notification bar indication. What to modify on the code to get save image on sdcard on the above link
i have some doubts regards the code in the above link is Can i use the same code to download audio or video file?
please help me.
Edited question:
I have tried
filepath = Environment.getExternalStorageDirectory().getPath()+"/download/cm.png";
Uri destinationUri = Uri.parse(filepath);
request.setDestinationUri(destinationUri);
before the preference manger on the button click. but i could not get the file on sdcard.

This is what i used.
Uri downloadUri = Uri.parse(DOWNLOAD_FILE);
DownloadManager.Request request = new DownloadManager.Request(downloadUri);
request.setDescription("Downloading a file");
long id = downloadManager.enqueue(request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI |DownloadManager.Request.NETWORK_MOBILE)
.setAllowedOverRoaming(false)
.setTitle("File Downloading...")
.setDescription("Image File Download")
.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "cm.png"));

In the code you refer to, the file is opened at the end. At this point, you can consider copying it to the SDCard.
Otherwise (better) use http://developer.android.com/reference/android/app/DownloadManager.Request.html setDestinationUri(android.net.Uri) to specify where you want to download the file.

downloadmanager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
Toast.makeText(context, "Downloading...", Toast.LENGTH_LONG).show();
Uri uri = Uri.parse("---- url here ------");
request = new DownloadManager.Request(uri);
request.setAllowedNetworkTypes(DownloadManager.Request.NETWORK_WIFI | DownloadManager.Request.NETWORK_MOBILE);
request.setAllowedOverRoaming(false);
request.setTitle("---- title here ------");
String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(MimeTypeMap.getFileExtensionFromUrl("---- url here ------");
request.setMimeType(mimeType);
request.setDescription("---- descripation here ------");
if("---- titlehere ------" != null){
request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, "---- title here ------");
}
request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
Long reference = downloadmanager.enqueue(request);