Add image to Media Gallery - Android

Question

I am trying to add a new image to the gallery. I select an existing image, although the intention, and then change its size and compress.

Then I save the resulting bitmap:

public static File compressAndSaveImage(Context ctx, Uri imageUri) throws FileNotFoundException { File file = null; if (imageUri != null) { ContextWrapper cw = new ContextWrapper(ctx); File directory = cw.getDir("imageDir", Context.MODE_PRIVATE); file = new File(directory, imageUri.getLastPathSegment()); System.out.println("storing to " + file); InputStream input = ctx.getContentResolver().openInputStream(imageUri); Bitmap b = ImageManager.resize(BitmapFactory.decodeStream(input), ctx.getResources().getDimension(R.dimen.player_thumb_w), ctx.getResources().getDimension(R.dimen.player_thumb_h)); FileOutputStream fos = new FileOutputStream(file); if (b.compress(Bitmap.CompressFormat.PNG, 100, fos)) { System.out.println("Compression success");// bmp is your Bitmap instance } addPictureToGallery(ctx, file); } return file; } 

But when I try to add an image to the gallery, I get no errors and the image is not added. I tried both methods below:

 private static void addPictureToGallery(Context ctx, File filepath) { // Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE); // System.out.println("Publish: " + filepath.exists()); // System.out.println("Publish: " + filepath.getAbsolutePath()); // Uri contentUri = Uri.fromFile(filepath); // mediaScanIntent.setData(contentUri); // ctx.sendBroadcast(mediaScanIntent); MediaScannerConnection.scanFile( ctx, new String[]{filepath.getAbsolutePath()}, null, new MediaScannerConnection.OnScanCompletedListener() { @Override public void onScanCompleted(String path, Uri uri) { Log.w("mydebug", "file " + path + " was scanned successfully: " + uri); } }); } } 

The callback prints the following line:

 file /data/data/test.myapps.appname/app_imageDir/6045564126748266738 was scanned successfully: content://media/external/file/7838 

What am I missing?

Answer 1

I would put this as a comment, since I do not have time to really understand things in detail, but this is clearly too long. Try something like this (I use this to store bitmaps in the gallery). As a note, it looks like you are doing nothing but scanning the image. Now it seems that you are storing the file on your internal storage, and not on your phone (gallery).

Suppose we run this from ActivityA.class, which extends Activity

  /** * Will save our card (currently set as a bitmap) as a jpeg and save it into our devices * native photo gallery. Unfortunately, the default method for this will add the image to the bottom * of the gallery by default, that is no good. This more complex method that utilizes Android's * native methods will allow us to store the bitmap at the top of the gallery by setting it's * meta data to today date. */ public class SaveBitmapToDevice extends AsyncTask<Bitmap, Void, String>{ private final ShareType type; public SaveBitmapToDevice(ShareType type){ this.type = type; } @Override protected String doInBackground(Bitmap... cards) { return insertImageIntoGallery(getContentResolver(), cards[0], getString(R.string.card_gallery_title), getString(R.string.card_gallery_label)); } /** * A copy of the Android internals insertImage method, this method populates the * meta data with DATE_ADDED and DATE_TAKEN. This fixes a common problem where media * that is inserted manually gets saved at the end of the gallery (because date is not populated). * @see android.provider.MediaStore.Images.Media#insertImage(android.content.ContentResolver, Bitmap, String, String). * If the MediaStore not available, we will redirect the file to our alternative source, the SD card. */ public String insertImageIntoGallery(ContentResolver cr, Bitmap source, String title, String description) { ContentValues values = new ContentValues(); values.put(MediaStore.Images.Media.TITLE, title); values.put(MediaStore.Images.Media.DISPLAY_NAME, title); values.put(MediaStore.Images.Media.DESCRIPTION, description); values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg"); // Add the date meta data to ensure the image is added at the front of the gallery values.put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis()); values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis()); Uri url = null; String stringUrl = null; /* value to be returned */ try { url = cr.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); if (source != null) { OutputStream imageOut = cr.openOutputStream(url); try { source.compress(Bitmap.CompressFormat.JPEG, 50, imageOut); } finally { imageOut.close(); } long id = ContentUris.parseId(url); // Wait until MINI_KIND thumbnail is generated. Bitmap miniThumb = MediaStore.Images.Thumbnails.getThumbnail(cr, id, MediaStore.Images.Thumbnails.MINI_KIND, null); // This is for backward compatibility. storeThumbnail(cr, miniThumb, id, 50F, 50F, MediaStore.Images.Thumbnails.MICRO_KIND); } else { cr.delete(url, null, null); return storeToAlternateSd(source, title); // url = null; } } catch (Exception e) { if (url != null) { cr.delete(url, null, null); return storeToAlternateSd(source, title); // url = null; } } savedOnSD = false; if (url != null) { stringUrl = url.toString(); } return stringUrl; } /** * A copy of the Android internals StoreThumbnail method, it used with the insertImage to * populate the android.provider.MediaStore.Images.Media#insertImage with all the correct * meta data. The StoreThumbnail method is private so it must be duplicated here. * @see android.provider.MediaStore.Images.Media (StoreThumbnail private method). */ private Bitmap storeThumbnail( ContentResolver cr, Bitmap source, long id, float width, float height, int kind) { // create the matrix to scale it Matrix matrix = new Matrix(); float scaleX = width / source.getWidth(); float scaleY = height / source.getHeight(); matrix.setScale(scaleX, scaleY); Bitmap thumb = Bitmap.createBitmap(source, 0, 0, source.getWidth(), source.getHeight(), matrix, true ); ContentValues values = new ContentValues(4); values.put(MediaStore.Images.Thumbnails.KIND,kind); values.put(MediaStore.Images.Thumbnails.IMAGE_ID,(int)id); values.put(MediaStore.Images.Thumbnails.HEIGHT,thumb.getHeight()); values.put(MediaStore.Images.Thumbnails.WIDTH,thumb.getWidth()); Uri url = cr.insert(MediaStore.Images.Thumbnails.EXTERNAL_CONTENT_URI, values); try { OutputStream thumbOut = cr.openOutputStream(url); thumb.compress(Bitmap.CompressFormat.JPEG, 100, thumbOut); thumbOut.close(); return thumb; } catch (FileNotFoundException ex) { Log.e("IMAGE_COMPRESSION_ERROR", "File not found"); ex.printStackTrace(); return null; } catch (IOException ex) { Log.e("IMAGE_COMPRESSION_ERROR", "IO Exception"); ex.printStackTrace(); return null; } } /** * If we have issues saving into our MediaStore, save it directly to our SD card. We can then interact with this file * directly, opposed to pulling from the MediaStore. Again, this is a backup method if things don't work out as we * would expect (seeing as most devices will have a MediaStore). * * @param src * @param title * @return - the file path */ private String storeToAlternateSd(Bitmap src, String title){ if(src == null) return null; File sdCardDirectory = new File(Environment.getExternalStorageDirectory() + File.separator + "My Cards"); if(!sdCardDirectory.exists()) sdCardDirectory.mkdir(); SimpleDateFormat sdf = new SimpleDateFormat("MM-dd-yyyy - (hh.mm.a)", Locale.US); File image = new File(sdCardDirectory, title + " -- [" + sdf.format(new Date()) + "].jpg"); try { FileOutputStream imageOut = new FileOutputStream(image); src.compress(Bitmap.CompressFormat.JPEG, 100, imageOut); imageOut.close(); savedOnSD = true; return image.getAbsolutePath(); } catch (FileNotFoundException ex) { ex.printStackTrace(); return null; } catch (IOException ex) { ex.printStackTrace(); return null; } } @Override public void onPostExecute(String url){ if(url != null){ Intent intent = new Intent(); intent.setAction(Intent.ACTION_VIEW); if(savedOnSD){ File file = new File(url); if(file.exists()) intent.setDataAndType(Uri.fromFile(file), "image/jpeg"); else return; } else intent.setDataAndType(Uri.parse(url), "image/jpeg"); ActivityA.this.startActivity(intent); } else Toast.makeText(ActivityA.this, getString(R.string.error_compressing), Toast.LENGTH_SHORT).show(); } } 

Answer 2

Thanks @ zgc7009, you set me on the right path. I used part of your code, and this is the end result for anyone who wants to solve.

The problem was that I was saving the image in the local application store.

 File storedImagePath = generateImagePath("player", "png"); if (!compressAndSaveImage(storedImagePath, bitmap)) { return null; } Uri url = addImageToGallery(context.getContentResolver(), "png", storedImagePath); 

Where three methods are used:

Create path

 private static File getImagesDirectory() { File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + File.separator + IMAGE_DIR);//Environment.getExternalStorageDirectory() if (!file.mkdirs() && !file.isDirectory()) { Log.e("mkdir", "Directory not created"); } return file; } public static File generateImagePath(String title, String imgType) { SimpleDateFormat sdf = new SimpleDateFormat("dd-MM-yyyy-hh-mm-ss"); return new File(getImagesDirectory(), title + "_" + sdf.format(new Date()) + "." + imgType); } 

Compress and save

 public boolean compressAndSaveImage(File file, Bitmap bitmap) { boolean result = false; try { FileOutputStream fos = new FileOutputStream(file); if (result = bitmap.compress(Bitmap.CompressFormat.PNG, 100, fos)) { Log.w("image manager", "Compression success"); } fos.close(); } catch (IOException e) { e.printStackTrace(); } return result; } 

Add to gallery

 public Uri addImageToGallery(ContentResolver cr, String imgType, File filepath) { ContentValues values = new ContentValues(); values.put(MediaStore.Images.Media.TITLE, "player"); values.put(MediaStore.Images.Media.DISPLAY_NAME, "player"); values.put(MediaStore.Images.Media.DESCRIPTION, ""); values.put(MediaStore.Images.Media.MIME_TYPE, "image/" + imgType); values.put(MediaStore.Images.Media.DATE_ADDED, System.currentTimeMillis()); values.put(MediaStore.Images.Media.DATE_TAKEN, System.currentTimeMillis()); values.put(MediaStore.Images.Media.DATA, filepath.toString()); return cr.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values); } 

Answer 3

You can also use the static methods of MediaStore ...

 public String addImageToGallery(ContentResolver cr, File filepath) { try { retrun MediaStore.Images.Media.insertImage(cr, filepath.toString(), filepath.getName(), "Image Description"); } catch (FileNotFoundException e) { e.printStackTrace(); } } 

String returned from insertImage matches the toString() call of the Uri object in the received response.

I know this is an older post, but I hope this helps others who are still finding their way here.