Develop Reference

How to save a downloaded audio file on Android Q with Metadata?

I try to save a downloaded file with the ContentResolver to maintain metadata like artist, album and title.
First question:
Do i need a file with ID3 Tags or is it enough to specify the metadata via the MediaStore?
The MP3 file which gets downloaded doesn't have ID3 Tags.
Second question:
I use the following code to save the mp3 file to the MediaStore:
ContentValues values = new ContentValues(7);
values.put(MediaStore.Audio.Media.TITLE, audiodata.getTitle());
values.put(MediaStore.Audio.Media.ARTIST, audiodata.getArtist());
values.put(MediaStore.Audio.Media.ALBUM, audiodata.getAlbum());
values.put(MediaStore.Audio.Media.DATE_ADDED, (int) (System.currentTimeMillis() / 1000));
values.put(MediaStore.Audio.Media.MIME_TYPE, "audio/mp3");
values.put(MediaStore.Audio.Media.DISPLAY_NAME, audiodata.getTitle() + ".mp3");
values.put(MediaStore.Audio.Media.RELATIVE_PATH, "Music/AudioConverter/");
Uri audiouri = getContentResolver().insert(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, values);
ParcelFileDescriptor file = null;
try {
file = getContentResolver().openFileDescriptor(audiouri, "w");
boolean writtenToDisk = writeResponseBodyToDisk(response.body(), file);
btnSelectFile.setText("Datei wählen...");
pbMain.setVisibility(View.GONE);
} catch (FileNotFoundException e) {
e.printStackTrace();
pbMain.setVisibility(View.GONE);
Toast.makeText(MainActivity.this, e.getMessage(), Toast.LENGTH_LONG).show();
}
If I remove the extension ".mp3" from the display name, the Musicplayer shows me the right artist, album and so on. But if I leave the extension as shown above then no metadata gets saved except the display name.
Is there anything wrong? Do i miss something?

How to get Content URI from absolute path?

I am developing an android application in which there is a scenario that we need to convert a file's absolute path (/storage/emulated/0/..../1584362593949.pdf) to content URI(content://)
I have tried converting for the file types such as Audio and video with the help of content resolver and there was no issue I faced but stuck at converting for PDF documents.
Check the code snippet below
public Uri convertFileUriToContentUri(String filePath, String title) {
String fileType = title.substring(title.lastIndexOf(".") + 1);
File file = new File(filePath);
Uri base = null;
//creating content values of size 4
ContentValues values = new ContentValues(4);
long current = System.currentTimeMillis();
switch (fileType) {
case "mp3":
values.put(MediaStore.Audio.Media.TITLE, "audio" + file.getName());
values.put(MediaStore.Audio.Media.DATE_ADDED, (int) (current / 1000));
values.put(MediaStore.Audio.Media.MIME_TYPE, "audio/mp3");
values.put(MediaStore.Audio.Media.DATA, file.getAbsolutePath());
base = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
break;
case "pdf":
// I am Stuck here as MediaStore does not provide support to documents
break;
case "mp4":
values.put(MediaStore.Video.Media.TITLE, "video" + file.getName());
values.put(MediaStore.Video.Media.DATE_ADDED, (int) (current / 1000));
values.put(MediaStore.Video.Media.MIME_TYPE, "video/mp4");
values.put(MediaStore.Video.Media.DATA, file.getAbsolutePath());
base = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
break;
}
//creating content resolver and storing it in the external content uri
ContentResolver contentResolver = context.getContentResolver();
Uri newUri = contentResolver.insert(base, values);
//sending broadcast message to scan the media file so that it can be available
context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, newUri));
return newUri;
}
Please help me find out the solution.

Android Q, how to save audio recording with MediaStore with the correct file name?

I want to store my mp3 files recorded with my app to the Music folder with MediaStore for the new "Scoped Storage" of Android 10.
This method works good, but the files are named with timestamp (e.g. 1576253519449), without .mp3 extension.
If I add the extension manually with file manager, the file is recorded correctly.
How i can use fileName + ".mp3" to name the files?
String fileName; //Obtained by intent
MediaRecorder audioRecorder;
Uri audiouri;
ParcelFileDescriptor file;
private void startRecording() throws IOException {
ContentValues values = new ContentValues(4);
values.put(MediaStore.Audio.Media.TITLE, fileName);
values.put(MediaStore.Audio.Media.DATE_ADDED, (int) (System.currentTimeMillis() / 1000));
values.put(MediaStore.Audio.Media.MIME_TYPE, "audio/mp3");
values.put(MediaStore.Audio.Media.RELATIVE_PATH, "Music/Recordings/");
audiouri = getContentResolver().insert(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, values);
file = getContentResolver().openFileDescriptor(audiouri, "w");
if (file != null) {
audioRecorder = new MediaRecorder();
audioRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
audioRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
audioRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
audioRecorder.setOutputFile(file.getFileDescriptor());
audioRecorder.setAudioChannels(1);
audioRecorder.prepare();
audioRecorder.start();
}
}
And another question: MediaStore.Audio.Media.RELATIVE_PATH is only for Android 10.
How to maintain retrocompatibility with older releases?
EDIT:
For retrocompatibility, you can just remove values.put(MediaStore.Audio.Media.RELATIVE_PATH, "Music/Recordings/");: the files will be saved directly in Music directory.
Or use if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) to add the subdirectory only on Android 10.

As #blackapps suggested, can be used the DISPLAY_NAME property.

Android Studio App Edited images not showing up in gallery

I created a simple android app for adding frames and cropping images, now after the editing is done the pictures are saved in android root>app folder but non of these pictures show up in the gallery, here is My code
/**
* Create a File for saving an image or video
*/
private File getOutputMediaFile() {
// To be safe, you should check that the SDCard is mounted
// File mediaStorageDir = new File(Environment.getExternalStorageDirectory()
// + "/Android/data"
// + getApplicationContext().getPackageName()
// + "/Files" + Global.AppFolder);
File root = new File(Environment.getExternalStorageDirectory().getAbsolutePath(), "/" + Global.AppFolder);
// Create the storage directory if it does not exist
if (!root.exists()) {
if (!root.mkdirs()) {
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("ddMMyyyy_HHmm").format(new Date());
File mediaFile;
String mImageName = "MI_" + timeStamp + ".jpg";
mediaFile = new File(root.getAbsolutePath(), mImageName);
return mediaFile;
}
private String getRealPathFromURI(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
if (cursor == null) {
return uri.getPath();
} else {
cursor.moveToFirst();
String s = cursor.getString(cursor.getColumnIndex("_data"));
cursor.close();
return s;
}
}
By the way I am a newbie and don't have a lot of experience with android coding so detailed answers and references(for further learning) shall be highly appreciated.

try this add below code after saving image
ContentValues values = new ContentValues();
values.put(Images.Media.TITLE, "title");
values.put(Images.Media.DESCRIPTION, "description");
values.put(Images.Media.DATE_TAKEN, System.currentTimeMillis());
values.put(Images.ImageColumns.BUCKET_ID, root.toString().toLowerCase(Locale.US).hashCode());
values.put(Images.ImageColumns.BUCKET_DISPLAY_NAME, root.getName().toLowerCase(Locale.US));
values.put("_data", root.getAbsolutePath());
ContentResolver cr = getContentResolver();
cr.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);

Add these code after you save the image
sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" + Environment.getExternalStorageDirectory())));
The Media Scanning is only done when the system Bootup. So you need to tell the media scanner to re-scan the files.

How to rename voice recorded file before saving it to gallery

This is how i am saving voice recorded file to SDcard,Here want to give rename option for user before saving to gallery,not getting any idea ,Suggest me any solution,Thanks.
protected void addRecordingToMediaLibrary() {
ContentValues values = new ContentValues(4);
long current = System.currentTimeMillis();
values.put(MediaStore.Audio.Media.TITLE, "audio" + audiofile.getName());
values.put(MediaStore.Audio.Media.DATE_ADDED, (int) (current / 1000));
values.put(MediaStore.Audio.Media.MIME_TYPE, "audio/3gp");
values.put(MediaStore.Audio.Media.DATA, audiofile.getAbsolutePath());
ContentResolver contentResolver = getContentResolver();
Uri base = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Uri newUri = contentResolver.insert(base, values);
sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, newUri));
Toast.makeText(this, "Added File " + newUri, Toast.LENGTH_LONG).show();
}

Guessing that the above method you posted will get called once the recording is done, What I suggest you do is, show the user a Dialog requesting for the name of the file he/she wishes to enter and have this method called on the click of positive button of this Dialog also passing this method a String parameter denoting the filename; something like this protected void addRecordingToMediaLibrary(String fileName) {. Set this filename values.put(MediaStore.Audio.Media.TITLE, fileName); like this.