sdcard에 저장된 이미지가 Android의 갤러리 앱에 표시되지 않습니다.

sdcard에 저장된 이미지가 Android의 갤러리 앱에 표시되지 않습니다.

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이미지를 sdcard에 저장했는데 sdcard를 꺼내서 다시 돌려 줄 때까지 갤러리 애플리케이션에 표시되지 않습니다.

왜 그런지 아십니까?

갤러리 애플리케이션에 파일 저장시 업데이트되지 않는 캐시가있는 것 같습니다.

사실, 나는 또한 갤러리 응용 프로그램에서 방금 저장 한 이미지를 열 것을 아무 성공이 없다 할
이 이 문제에 대한 내 질문입니다.

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시스템은 새 이미지 (및 기타) 파일을 찾기 위해 마운트 될 때 SD 카드를 스캔합니다. 프로그래밍 방식으로 파일을 추가하는 경우 다음 클래스를 사용할 수 있습니다.

http://developer.android.com/reference/android/media/MediaScannerConnection.html

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더 간단한 해결책은 정적 편의 메서드 scanFile () 을 사용하는 것입니다 .

File imageFile = ...
MediaScannerConnection.scanFile(this, new String[] { imageFile.getPath() }, new String[] { "image/jpeg" }, null);

this당신의 활동은 어디에 있든 (또는 어떤 컨텍스트 든), mime-type은 비표준 파일 확장자를 사용하고있는 경우에만 필요하고 null는 선택적 콜백을위한 것입니다 (이런 간단한 경우에는 필요하지 않습니다).

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원래 질문 및이 문제가있을 수있는 다른 사람에 대한 나의 대답 :

나는 사람들이 SD 카드에 저장 한 내 앱의 이미지가 갤러리에 즉시 표시되지 않는 동일한 문제가 발생했습니다. 몇 가지 검색 후 문제를 해결 한 'sdcard에 저장'코드 뒤에 삽입 된 코드 한 줄을 발견했습니다.

sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"+ Environment.getExternalStorageDirectory())));

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의도에 따라 이미지를 미디어 갤러리에 추가 할 수도 있습니다. 예제 코드를 살펴보고 어떻게 수행되는지 확인하세요.

ContentValues image = new ContentValues();

image.put(Images.Media.TITLE, imageTitle);
image.put(Images.Media.DISPLAY_NAME, imageDisplayName);
image.put(Images.Media.DESCRIPTION, imageDescription);
image.put(Images.Media.DATE_ADDED, dateTaken);
image.put(Images.Media.DATE_TAKEN, dateTaken);
image.put(Images.Media.DATE_MODIFIED, dateTaken);
image.put(Images.Media.MIME_TYPE, "image/png");
image.put(Images.Media.ORIENTATION, 0);

 File parent = imageFile.getParentFile();
 String path = parent.toString().toLowerCase();
 String name = parent.getName().toLowerCase();
 image.put(Images.ImageColumns.BUCKET_ID, path.hashCode());
 image.put(Images.ImageColumns.BUCKET_DISPLAY_NAME, name);
 image.put(Images.Media.SIZE, imageFile.length());

 image.put(Images.Media.DATA, imageFile.getAbsolutePath());

 Uri result = context.getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, image);

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Android KITKAT을 포함한 갤러리 새로 고침

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT)
{
        Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
        File f = new File("file://"+ Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES));
        Uri contentUri = Uri.fromFile(f);
        mediaScanIntent.setData(contentUri);
        this.sendBroadcast(mediaScanIntent);
}
else
{
        sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://" + Environment.getExternalStorageDirectory())));
}

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MediaScannerConnection에 대한 코드는 다음과 같습니다.

MyMediaConnectorClient client = new MyMediaConnectorClient(newfile);
MediaScannerConnection scanner = new MediaScannerConnection(context, client);
client.setScanner(scanner);
scanner.connect();

newfile은 새 / 저장된 파일의 파일 개체입니다.

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there is an app in the emulator that says - ' Dev Tools'

click on that and select ' Media Scanning'.. all the images ll get scanned

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Let your activity implement 'MediaScannerConnectionClient' and add this to your activity:

private void startScan() 
{ 
    if(conn!=null) conn.disconnect();  
    conn = new MediaScannerConnection(YourActivity.this,YourActivity.this); 
    conn.connect(); 
} 

@Override 
public void onMediaScannerConnected() { 
    try{
        conn.scanFile(yourImagePath, "image/*");
       } catch (java.lang.IllegalStateException e){
       }
}

@Override 
public void onScanCompleted(String path, Uri uri) { 
    conn.disconnect(); 
} 

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this work with me

File file = ..... // Save file

context.sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.fromFile(file)));

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Here I am sharing code that can load image in form of bitmap from and save that image on sdcard gallery in app name folder. You should follow these steps

1. Download Image Bitmap first

     private Bitmap loadBitmap(String url) {
        try {
            InputStream in = new java.net.URL(url).openStream();
            return BitmapFactory.decodeStream(in);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
       }

1. Please also provide following permission in your AndroidManifest.xml file.

    uses-permission android:name="android.permission.INTERNET" 
    uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"

1. Here is whole code that is written in Activty in which we want to perform this task.

     void saveMyImage(String appName, String imageUrl, String imageName) {

            Bitmap bmImg = loadBitmap(imageUrl);
            File filename;
            try {
                String path1 = android.os.Environment.getExternalStorageDirectory()
                        .toString();
                File file = new File(path1 + "/" + appName);
                if (!file.exists())
                    file.mkdirs();
                filename = new File(file.getAbsolutePath() + "/" + imageName
                        + ".jpg");
                FileOutputStream out = new FileOutputStream(filename);
                bmImg.compress(Bitmap.CompressFormat.JPEG, 90, out);
                out.flush();
                out.close();
                ContentValues image = new ContentValues();
                image.put(Images.Media.TITLE, appName);
                image.put(Images.Media.DISPLAY_NAME, imageName);
                image.put(Images.Media.DESCRIPTION, "App Image");
                image.put(Images.Media.DATE_ADDED, System.currentTimeMillis());
                image.put(Images.Media.MIME_TYPE, "image/jpg");
                image.put(Images.Media.ORIENTATION, 0);
                File parent = filename.getParentFile();
                image.put(Images.ImageColumns.BUCKET_ID, parent.toString()
                        .toLowerCase().hashCode());
                image.put(Images.ImageColumns.BUCKET_DISPLAY_NAME, parent.getName()
                        .toLowerCase());
                image.put(Images.Media.SIZE, filename.length());
                image.put(Images.Media.DATA, filename.getAbsolutePath());
                Uri result = getContentResolver().insert(
                        MediaStore.Images.Media.EXTERNAL_CONTENT_URI, image);
                Toast.makeText(getApplicationContext(),
                        "File is Saved in  " + filename, Toast.LENGTH_SHORT).show();
            } catch (Exception e) {
                e.printStackTrace();
            }

        }

1. Hope that it can solve your whole problem.

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sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"+ Environment.getExternalStorageDirectory())));

Does not seem to work on KITKAT. It throws permission denial exception and crashes the app. So for this, I have done the following,

String path = mediaStorageDir.getPath() + File.separator
                    + "IMG_Some_name.jpg";
CameraActivity.this.sendBroadcast(new Intent(
                             Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri
                            .parse("file://" + path)));

Hope it helps.

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 File folderGIF = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/newgif2");    //path where gif will be stored
success = folderGIF.mkdir();    //make directory
 String finalPath = folderGIF + "/test1.gif";  //path of file
.....
/* changes in gallery app if any changes in done*/
 MediaScannerConnection.scanFile(this,
                    new String[]{finalPath}, null,
                    new MediaScannerConnection.OnScanCompletedListener() {
                        public void onScanCompleted(String path, Uri uri) {
                            Log.i("ExternalStorage", "Scanned " + path + ":");
                            Log.i("ExternalStorage", "-> uri=" + uri);
                        }
                    });

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Use this after saving the image

sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED, Uri.parse("file://"+ Environment.getExternalStorageDirectory())));

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My code for MyMediaConnectorClient:

public class MyMediaConnectorClient implements MediaScannerConnectionClient {

    String _fisier;
    MediaScannerConnection MEDIA_SCANNER_CONNECTION;

    public MyMediaConnectorClient(String nume) {
        _fisier = nume;
    }

    public void setScanner(MediaScannerConnection msc){
        MEDIA_SCANNER_CONNECTION = msc;
    }

    @Override
    public void onMediaScannerConnected() {
        MEDIA_SCANNER_CONNECTION.scanFile(_fisier, null);
    }

    @Override
    public void onScanCompleted(String path, Uri uri) {
        if(path.equals(_fisier))
            MEDIA_SCANNER_CONNECTION.disconnect();
    }
}

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You need to give permissions to the Gallery app. Just long press the gallery app icon in the home screen and tap on 'APP INFO' that pops up at the top of the screen. Doing it will show the gallery app settings. Now go in Permissions tab and enable the storage, camera permissions by toggling it. Now go to your native gallery app and you will get the your saved images.

참고URL : https://stackoverflow.com/questions/2170214/image-saved-to-sdcard-doesnt-appear-in-androids-gallery-app