android - Gallery thumbnails not visible on Samsung Galaxy S3 -
this driving me nuts, because when create in android picture , save on motorola g, shows ok in gallery. when execute code on samsung galaxy s3, appears folder called "camera" unknown file type.
as can see on pretty-spaghetti-code, create file:
//insert image , create thumbnail it. // // @param cr // content resolver use // @param source // stream use image // @param title // name of image // @param description // description of image // @return url newly created image, or <code>null</code> if // image failed stored reason. // public final string insertimage(contentresolver cr, bitmap source, string title, string description, long time) { contentvalues values = new contentvalues(); values.put(images.media.title, title); values.put(images.media.description, description); values.put(images.media.mime_type, "image/jpeg"); values.put(images.media.date_taken, time); string stringurl = null; /* value returned */ outputstream imageout = null; try { valpub.url = cr.insert(media.external_content_uri, values); try { imageout = cr.openoutputstream(valpub.url); valpub.strultimafoto = valpub.url.getpath() + "/" + title; } catch (exception e) { // esto resuelve el problema de las cámaras samsung stringurl = valpub.pathsamsung; file mdir = new file(stringurl); if (!mdir.exists()) { mdir.mkdirs(); } stringurl = stringurl + title; valpub.strultimafoto = stringurl; file m_fil = new file(stringurl); valpub.url = uri.fromfile(m_fil); imageout = new fileoutputstream(m_fil); } try { source.compress(bitmap.compressformat.jpeg, 50, imageout); // bmpfoto = bitmap.createbitmap(source); } catch (exception e) { } { imageout.close(); } long id=0; try { id = contenturis.parseid(valpub.url); }catch(exception nex) { cursor mcursorloader; int mcolumnindex; // initializing cursorloader mcursorloader = initializecursorloader(); mcolumnindex = mcursorloader.getcolumnindex(mediastore.images.media._id); // go thru images in device (external_content_uri) (int = 0; < mcursorloader.getcount(); i++) { mcursorloader.movetoposition(i); id = mcursorloader.getint(mcolumnindex); } } // wait until mini_kind thumbnail generated. bitmap minithumb = null; try { minithumb = images.thumbnails.getthumbnail(cr, id, images.thumbnails.mini_kind, null); } catch (exception e) { } if (minithumb == null) { // trick samsung galleryaddpic(valpub.url); } // backward compatibility. @suppresswarnings("unused") bitmap microthumb = null; try { microthumb = storethumbnail(cr, minithumb, id, 50f, 50f, images.thumbnails.micro_kind, title); } catch (exception e) { } } catch (exception e) {} if (valpub.url != null) { stringurl = valpub.url.tostring(); } return stringurl; } i tried refresh gallery this:
public void galleryaddpic(uri picuri) { intent mediascanintent = new intent(intent.action_media_scanner_scan_file, picuri); sendbroadcast(mediascanintent); } ...but didn't worked. seems related asynchronous task, don't know how fix it.
the remaining code:
private cursor initializecursorloader() { string[] columns = { mediastore.images.thumbnails._id, mediastore.images.media.data }; cursorloader cursorloader = new cursorloader( this, // context mediastore.images.media.external_content_uri, // uri columns, // projection null, // selection null, // selection args // sort order: desc = newest first // sort order: asc = oldest first mediastore.images.media.date_added + " desc"); // *** note *** // with: // // mediastore.images.media.date_added + " asc" // // runs fine (mediastore returns 'null' invalid thumbnails) // problem seems reside on " desc" tag. // // how bizarre that? return cursorloader.loadinbackground(); } // public static uri getcontenturi(string volumename) { // return uri.parse("content://mtp/" + volumename + "/video/media"); // } private final bitmap storethumbnail(contentresolver cr, bitmap source, long id, float width, float height, int kind, string title) { // create matrix scale 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(images.thumbnails.kind, kind); values.put(images.thumbnails.image_id, (int) id); values.put(images.thumbnails.height, thumb.getheight()); values.put(images.thumbnails.width, thumb.getwidth()); valpub.url = cr.insert(images.thumbnails.external_content_uri, values); if (valpub.url == null) { valpub.url = cr.insert(media.internal_content_uri, values); } outputstream thumbout = null; try { thumbout = cr.openoutputstream(valpub.url); } catch (exception e) { } try { thumb.compress(bitmap.compressformat.jpeg, 100, thumbout); thumbout.close(); return thumb; } catch (filenotfoundexception ex) { return null; } catch (ioexception ex) { return null; } } as said before, awful spaghetti code. i'm trying make runnable first , have changed many many times, without luck. please, feel free suggest improvements.
finally, have resolved it. i've changed code in order execute galleryadpic, because refreshes gallery on samsung devices:
public void galleryaddpic(uri picuri) { intent mediascanintent = new intent(intent.action_media_scanner_scan_file, picuri); sendbroadcast(mediascanintent); }
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