I have copied files from the app-private folder to either Pictures or DCIM and I want to open the gallery widget in my app and display these images. However, my gallery widget creates a gallery of thumbnails using MediaStore id's and the newly added images dont appear there.
I tried all three solutions suggested on stackoverflow in order to refresh the media store and tell android about the existence of the new files
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED,- forbidden in newer APIs
2.
MediaScannerConnection.scanFile(context, new String[]{ pathToFile1, pathToFile2 }, null, // tried also with a String[] with the mimetype, no difference new MediaScannerConnectionClient() { public void onMediaScannerConnected(){ } public void onScanCompleted(String path, Uri uri){ // URI is null, and the gallery doesn't display the image } }); 3.
public static void scanFile(Context context, String path, String mimeType ) { Client client = new Client(path, mimeType); MediaScannerConnection connection = new MediaScannerConnection(context, client); client.connection = connection; connection.connect(); } private static final class Client implements MediaScannerConnectionClient { private final String path; private final String mimeType; MediaScannerConnection connection; public Client(String path, String mimeType) { this.path = path; this.mimeType = mimeType; } @Override public void onMediaScannerConnected() { connection.scanFile(path, mimeType); } @Override public void onScanCompleted(String path, Uri uri) { connection.disconnect(); } } Again, uri is null
Why does Android make it so hard to perform such a normal, legit action? How do I achieve this effect in Nougat?
EDIT: I also tried sending broadcast for ACTION_MEDIA_SCANNER_SCAN_FILE
And I even took into consideration this: https://inthecheesefactory.com/blog/how-to-share-access-to-file-with-fileprovider-on-android-nougat/en
So now Im sending content:// instead of file:// URI but still nothing!
EDIT2:
I tried this
public static void scheduleJob(Context context) { JobScheduler js = (JobScheduler) context.getSystemService(Context.JOB_SCHEDULER_SERVICE); JobInfo job = new JobInfo.Builder( MY_BACKGROUND_JOB, new ComponentName(context, MyJobService.class)) .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED) .setRequiresCharging(true) .build(); js.schedule(job); } as explained here
https://developer.android.com/topic/performance/background-optimization.html
But again, when I open my gallery the new image is not there
2 Answers
Answers 1
Turns out I was trying to scan the path of the file I had copied to another place and then deleted, rather than the path of the newly created file.
With a combination of the media scanner and ACTION_MEDIA_SCANNER_SCAN_FILE and trying to scan the right file, I was able to refresh the media store.
Answers 2
I am doing the similar thing and it is working in Nougat also. Whenever I call getFilePaths(); method, It returns me fresh ArrayList of all the images present in Storage of the phone. -
public ArrayList<String> getFilePaths() { Uri u = MediaStore.Images.Media.EXTERNAL_CONTENT_URI; String[] projection = {MediaStore.Images.ImageColumns.DATA}; Cursor c = null; SortedSet<String> dirList = new TreeSet<String>(); ArrayList<String> resultIAV = new ArrayList<String>(); String[] directories = null; if (u != null) { c = getContentResolver().query(u, projection, null, null, null); } if ((c != null) && (c.moveToFirst())) { do { String tempDir = c.getString(0); tempDir = tempDir.substring(0, tempDir.lastIndexOf("/")); try{ dirList.add(tempDir); } catch(Exception e) { } } while (c.moveToNext()); directories = new String[dirList.size()]; dirList.toArray(directories); } for(int i=0;i<dirList.size();i++) { File imageDir = new File(directories[i]); File[] imageList = imageDir.listFiles(); if(imageList == null) continue; for (File imagePath : imageList) { try { if(imagePath.isDirectory()) { imageList = imagePath.listFiles(); } if ( imagePath.getName().contains(".jpg")|| imagePath.getName().contains(".JPG") || imagePath.getName().contains(".jpeg")|| imagePath.getName().contains(".JPEG") || imagePath.getName().contains(".png") || imagePath.getName().contains(".PNG") || imagePath.getName().contains(".gif") || imagePath.getName().contains(".GIF") || imagePath.getName().contains(".bmp") || imagePath.getName().contains(".BMP") ) { String path= imagePath.getAbsolutePath(); resultIAV.add(path); } } // } catch (Exception e) { e.printStackTrace(); } } } return resultIAV; } Now You will get Path to all images. You can call getFilePaths().size(); to return number of images and you can compare it with previous value.
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