Java Code Examples for android.content.ContentResolver#getPersistedUriPermissions()

public static void revokePreviousPermissions(@NonNull final ContentResolver resolver, @NonNull final Uri newUri) {
    // Unfortunately, the content Uri of the selected resource is not exactly the same as the one stored by ContentResolver
    // -> solution is to compare their TreeDocumentId instead
    String treeUriId = DocumentsContract.getTreeDocumentId(newUri);

    for (UriPermission p : resolver.getPersistedUriPermissions())
        if (!DocumentsContract.getTreeDocumentId(p.getUri()).equals(treeUriId))
            resolver.releasePersistableUriPermission(p.getUri(),
                    Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
    if (resolver.getPersistedUriPermissions().isEmpty()) {
        Timber.d("Permissions revoked successfully.");
    } else {
        Timber.d("Permissions failed to be revoked.");
    }
}
 

public void onSelectSAFRootFolder(@NonNull final Uri treeUri) {

        boolean isUriPermissionPeristed = false;
        ContentResolver contentResolver = getContentResolver();
        String treeUriId = DocumentsContract.getTreeDocumentId(treeUri);

        for (UriPermission p : contentResolver.getPersistedUriPermissions()) {
            if (DocumentsContract.getTreeDocumentId(p.getUri()).equals(treeUriId)) {
                isUriPermissionPeristed = true;
                Timber.d("Uri permission already persisted for %s", treeUri);
                break;
            }
        }

        if (!isUriPermissionPeristed) {
            Timber.d("Persisting Uri permission for %s", treeUri);
            // Release previous access permissions, if different than the new one
            FileHelper.revokePreviousPermissions(contentResolver, treeUri);
            // Persist new access permission
            contentResolver.takePersistableUriPermission(treeUri,
                    Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        }

        DocumentFile selectedFolder = DocumentFile.fromTreeUri(this, treeUri);
        if (selectedFolder != null) {
            String folderName = selectedFolder.getName();
            if (null == folderName) folderName = "";

            // Make sure we detect the Hentoid folder if it's a child of the selected folder
            if (!ImportHelper.isHentoidFolderName(folderName))
                selectedFolder = ImportHelper.getExistingHentoidDirFrom(this, selectedFolder);
        }

        // If no existing hentoid folder is detected, tell the user to select it again
        if (null == selectedFolder || null == selectedFolder.getName() || !ImportHelper.isHentoidFolderName(selectedFolder.getName()))
        {
            ToastUtil.toast("Please select an existing Hentoid folder. Its location is displayed on screen.");
            return;
        }
        scanLibrary(selectedFolder);
    }
 

public static @Result
int setAndScanFolder(
        @NonNull final Context context,
        @NonNull final Uri treeUri,
        boolean askScanExisting,
        @Nullable final ImportOptions options) {

    boolean isUriPermissionPeristed = false;
    ContentResolver contentResolver = context.getContentResolver();
    String treeUriId = DocumentsContract.getTreeDocumentId(treeUri);

    for (UriPermission p : contentResolver.getPersistedUriPermissions()) {
        if (DocumentsContract.getTreeDocumentId(p.getUri()).equals(treeUriId)) {
            isUriPermissionPeristed = true;
            Timber.d("Uri permission already persisted for %s", treeUri);
            break;
        }
    }

    if (!isUriPermissionPeristed) {
        Timber.d("Persisting Uri permission for %s", treeUri);
        // Release previous access permissions, if different than the new one
        FileHelper.revokePreviousPermissions(contentResolver, treeUri);
        // Persist new access permission
        contentResolver.takePersistableUriPermission(treeUri,
                Intent.FLAG_GRANT_READ_URI_PERMISSION | Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
    }

    DocumentFile docFile = DocumentFile.fromTreeUri(context, treeUri);
    if (null == docFile || !docFile.exists()) {
        Timber.e("Could not find the selected file %s", treeUri.toString());
        return Result.INVALID_FOLDER;
    }
    DocumentFile hentoidFolder = addHentoidFolder(context, docFile);
    if (null == hentoidFolder) {
        Timber.e("Could not create Hentoid folder in root %s", docFile.getUri().toString());
        return Result.CREATE_FAIL;
    }
    if (!FileHelper.checkAndSetRootFolder(context, hentoidFolder, true)) {
        Timber.e("Could not set the selected root folder %s", hentoidFolder.getUri().toString());
        return Result.INVALID_FOLDER;
    }

    if (hasBooks(context)) {
        if (!askScanExisting) {
            runImport(context, options);
            return Result.OK_LIBRARY_DETECTED;
        } else return Result.OK_LIBRARY_DETECTED_ASK;
    } else {
        // New library created - drop and recreate db (in case user is re-importing)
        new ObjectBoxDAO(context).deleteAllLibraryBooks(true);
        return Result.OK_EMPTY_FOLDER;
    }
}
 

/**
 * Gets a URI backed by a {@link DocumentsProvider} that points to the same media
 * file as the specified mediaUri. This allows apps who have permissions to access
 * media files in Storage Access Framework to perform file operations through that
 * on media files.
 * <p>
 * Note: this method doesn't grant any URI permission. Callers need to obtain
 * permission before calling this method. One way to obtain permission is through
 * a 3-step process:
 * <ol>
 *     <li>Call {@link android.os.storage.StorageManager#getStorageVolume(File)} to
 *     obtain the {@link android.os.storage.StorageVolume} of a media file;</li>
 *
 *     <li>Invoke the intent returned by
 *     {@link android.os.storage.StorageVolume#createAccessIntent(String)} to
 *     obtain the access of the volume or one of its specific subdirectories;</li>
 *
 *     <li>Check whether permission is granted and take persistent permission.</li>
 * </ol>
 * @param mediaUri the media URI which document URI is requested
 * @return the document URI
 */
public static Uri getDocumentUri(Context context, Uri mediaUri) {

    try {
        final ContentResolver resolver = context.getContentResolver();

        final String path = getFilePath(resolver, mediaUri);
        final List<UriPermission> uriPermissions = resolver.getPersistedUriPermissions();

        return getDocumentUri(resolver, path, uriPermissions);
    } catch (RemoteException e) {
        throw e.rethrowAsRuntimeException();
    }
}