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這讓我瘋狂，因爲當我在android中創建一張照片並將其保存在我的摩托羅拉G上時，它在畫廊中顯示正常。但是當我在Samsung Galaxy S3上執行代碼時，它只會出現一個名爲「Camera」的文件夾，其文件類型不明。三星Galaxy S3上不可見的畫廊縮略圖
正如你可以在我的漂亮，意大利麪條代碼中看到，我創建了一個文件：
//Insert an image and create a thumbnail for it.
//
// @param cr
// The content resolver to use
// @param source
// The stream to use for the image
// @param title
// The name of the image
// @param description
// The description of the image
// @return The URL to the newly created image, or <code>null</code> if
// the image failed to be stored for any 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 to be 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) {
} finally {
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 all the images in the device (EXTERNAL_CONTENT_URI)
for (int i = 0; i < mCursorLoader.getCount(); i++) {
mCursorLoader.moveToPosition(i);
id = mCursorLoader.getInt(mColumnIndex);
}
}
// Wait until MINI_KIND thumbnail is 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);
}
// This is for 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;
}
我試圖刷新這個畫廊：
public void galleryAddPic(Uri picUri) {
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, picUri);
sendBroadcast(mediaScanIntent);
}
...但它沒沒有工作。這似乎與某個異步任務有關，但我不知道如何解決它。
其餘代碼：
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"
//
// It runs just fine (MediaStore returns 'null' for invalid thumbnails)
// The problem seems to reside on the " DESC" tag.
//
// How bizarre is 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 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(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;
}
}
正如我以前說過，這是一個可怕的麪條代碼。我試圖讓它先運行，並且我多次改變它，沒有任何運氣。請隨時提出任何改進建議。