Example usage for android.content ContentResolver openOutputStream

Introduction

In this page you can find the example usage for android.content ContentResolver openOutputStream.

Prototype

public final @Nullable OutputStream openOutputStream(@NonNull Uri uri, @NonNull String mode)
        throws FileNotFoundException 

Source Link

Document

Open a stream on to the content associated with a content URI.

Usage

From source file:org.sufficientlysecure.keychain.util.FileHelper.java

/**
 * Deletes data at a URI securely by overwriting it with random data
 * before deleting it. This method is fail-fast - if we can't securely
 * delete the file, we don't delete it at all.
 *///w w w .j av  a 2  s  .  co m
public static int deleteFileSecurely(Context context, Uri uri) throws IOException {

    ContentResolver resolver = context.getContentResolver();
    long lengthLeft = FileHelper.getFileSize(context, uri);

    if (lengthLeft == -1) {
        throw new IOException("Error opening file!");
    }

    SecureRandom random = new SecureRandom();
    byte[] randomData = new byte[1024];

    OutputStream out = resolver.openOutputStream(uri, "w");
    if (out == null) {
        throw new IOException("Error opening file!");
    }
    out = new BufferedOutputStream(out);
    while (lengthLeft > 0) {
        random.nextBytes(randomData);
        out.write(randomData, 0, lengthLeft > randomData.length ? randomData.length : (int) lengthLeft);
        lengthLeft -= randomData.length;
    }
    out.close();

    if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
        return new File(uri.getPath()).delete() ? 1 : 0;
    } else {
        return resolver.delete(uri, null, null);
    }

}

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From source file:org.deviceconnect.android.deviceplugin.theta.fragment.ThetaVRModeFragment.java

/**
 * Save File./*from  w w  w .  java  2  s  . com*/
 * @param filename absolute path
 * @param data binary
 * @throws IOException Failed Save
 */
private void saveFile(final String filename, final byte[] data) throws IOException {
    Uri u = Uri.parse("file://" + filename);
    ContentResolver contentResolver = getActivity().getContentResolver();
    OutputStream out = null;
    try {
        out = contentResolver.openOutputStream(u, "w");
        out.write(data);
        out.flush();
    } catch (Exception e) {
        throw new IOException("Failed to save a file." + filename);
    } finally {
        if (out != null) {
            try {
                out.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

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From source file:com.chen.mail.providers.Attachment.java

/**
 * Constructor for use when creating attachments in eml files.
 *//*  ww w .  j  ava  2s  . co  m*/
public Attachment(Context context, Part part, Uri emlFileUri, String messageId, String partId) {
    try {
        // Transfer fields from mime format to provider format
        final String contentTypeHeader = MimeUtility.unfoldAndDecode(part.getContentType());
        name = MimeUtility.getHeaderParameter(contentTypeHeader, "name");
        if (name == null) {
            final String contentDisposition = MimeUtility.unfoldAndDecode(part.getDisposition());
            name = MimeUtility.getHeaderParameter(contentDisposition, "filename");
        }

        contentType = MimeType.inferMimeType(name, part.getMimeType());
        uri = EmlAttachmentProvider.getAttachmentUri(emlFileUri, messageId, partId);
        contentUri = uri;
        thumbnailUri = uri;
        previewIntentUri = null;
        state = UIProvider.AttachmentState.SAVED;
        providerData = null;
        supportsDownloadAgain = false;
        destination = UIProvider.AttachmentDestination.CACHE;
        type = UIProvider.AttachmentType.STANDARD;
        flags = 0;

        // insert attachment into content provider so that we can open the file
        final ContentResolver resolver = context.getContentResolver();
        resolver.insert(uri, toContentValues());

        // save the file in the cache
        try {
            final InputStream in = part.getBody().getInputStream();
            final OutputStream out = resolver.openOutputStream(uri, "rwt");
            size = IOUtils.copy(in, out);
            downloadedSize = size;
            in.close();
            out.close();
        } catch (FileNotFoundException e) {
            LogUtils.e(LOG_TAG, e, "Error in writing attachment to cache");
        } catch (IOException e) {
            LogUtils.e(LOG_TAG, e, "Error in writing attachment to cache");
        }
        // perform a second insert to put the updated size and downloaded size values in
        resolver.insert(uri, toContentValues());
    } catch (MessagingException e) {
        LogUtils.e(LOG_TAG, e, "Error parsing eml attachment");
    }
}

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From source file:com.android.mail.providers.Attachment.java

/**
 * Constructor for use when creating attachments in eml files.
 *///from  ww  w  . j a  v  a 2  s.co m
public Attachment(Context context, Part part, Uri emlFileUri, String messageId, String cid, boolean inline) {
    try {
        // Transfer fields from mime format to provider format
        final String contentTypeHeader = MimeUtility.unfoldAndDecode(part.getContentType());
        name = MimeUtility.getHeaderParameter(contentTypeHeader, "name");
        if (name == null) {
            final String contentDisposition = MimeUtility.unfoldAndDecode(part.getDisposition());
            name = MimeUtility.getHeaderParameter(contentDisposition, "filename");
        }

        contentType = MimeType.inferMimeType(name, part.getMimeType());
        uri = EmlAttachmentProvider.getAttachmentUri(emlFileUri, messageId, cid);
        contentUri = uri;
        thumbnailUri = uri;
        previewIntentUri = null;
        state = AttachmentState.SAVED;
        providerData = null;
        supportsDownloadAgain = false;
        destination = AttachmentDestination.CACHE;
        type = inline ? AttachmentType.INLINE_CURRENT_MESSAGE : AttachmentType.STANDARD;
        partId = cid;
        flags = 0;

        // insert attachment into content provider so that we can open the file
        final ContentResolver resolver = context.getContentResolver();
        resolver.insert(uri, toContentValues());

        // save the file in the cache
        try {
            final InputStream in = part.getBody().getInputStream();
            final OutputStream out = resolver.openOutputStream(uri, "rwt");
            size = IOUtils.copy(in, out);
            downloadedSize = size;
            in.close();
            out.close();
        } catch (FileNotFoundException e) {
            LogUtils.e(LOG_TAG, e, "Error in writing attachment to cache");
        } catch (IOException e) {
            LogUtils.e(LOG_TAG, e, "Error in writing attachment to cache");
        }
        // perform a second insert to put the updated size and downloaded size values in
        resolver.insert(uri, toContentValues());
    } catch (MessagingException e) {
        LogUtils.e(LOG_TAG, e, "Error parsing eml attachment");
    }
}

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From source file:com.tct.mail.providers.Attachment.java

/**
 * Constructor for use when creating attachments in eml files.
 *///from w ww  .  j  a  va2s  . c  o  m
public Attachment(Context context, Part part, Uri emlFileUri, String messageId, String cid, boolean inline,
        String subject) {
    try {
        // Transfer fields from mime format to provider format
        final String contentTypeHeader = MimeUtility.unfoldAndDecode(part.getContentType());
        name = MimeUtility.getHeaderParameter(contentTypeHeader, "name");
        if (name == null) {
            final String contentDisposition = MimeUtility.unfoldAndDecode(part.getDisposition());
            name = MimeUtility.getHeaderParameter(contentDisposition, "filename");
        }

        //TS: Gantao 2016-01-13 EMAIL BUGFIX_1292212 MOD_S
        //If we still don't get eml files's name , set it as subject+.eml
        if (name == null && MimeUtility.isEmlMimeType(part.getMimeType())) {
            name = subject + ".eml";
        }
        //TS: Gantao 2016-01-13 EMAIL BUGFIX_1292212 MOD_E

        contentType = MimeType.inferMimeType(name, part.getMimeType());
        //TS: Gantao 2015-07-03 EMAIL BUGFIX_957636 MOD_S
        if (inline) {
            // TS: Gantao 2015-09-19 EMAIL BUGFIX_570084 ADD_S
            isInline = 1;
            // TS: Gantao 2015-09-19 EMAIL BUGFIX_570084 ADD_E
            uri = EmlAttachmentProvider.getAttachmentByCidUri(emlFileUri, messageId);
            uri = uri.buildUpon().appendPath(cid).build();
        } else {
            // TS: Gantao 2015-09-19 EMAIL BUGFIX_570084 ADD_S
            isInline = 0;
            // TS: Gantao 2015-09-19 EMAIL BUGFIX_570084 ADD_E
            uri = EmlAttachmentProvider.getAttachmentUri(emlFileUri, messageId, cid);
        }
        //TS: Gantao 2015-07-03 EMAIL BUGFIX_957636 MOD_S
        contentUri = uri;
        thumbnailUri = uri;
        previewIntentUri = null;
        state = AttachmentState.SAVED;
        providerData = null;
        supportsDownloadAgain = false;
        destination = AttachmentDestination.CACHE;
        type = inline ? AttachmentType.INLINE_CURRENT_MESSAGE : AttachmentType.STANDARD;
        partId = cid;
        flags = 0;
        //TS: zhonghua.tuo 2015-3-3 EMAIL BUGFIX_936728 ADD_S
        realUri = null;
        //TS: zhonghua.tuo 2015-3-3 EMAIL BUGFIX_936728 ADD_E
        // insert attachment into content provider so that we can open the file
        final ContentResolver resolver = context.getContentResolver();
        resolver.insert(uri, toContentValues());

        // save the file in the cache
        try {
            final InputStream in = part.getBody().getInputStream();
            final OutputStream out = resolver.openOutputStream(uri, "rwt");
            size = IOUtils.copy(in, out);
            downloadedSize = size;
            in.close();
            out.close();
        } catch (FileNotFoundException e) {
            LogUtils.e(LOG_TAG, e, "Error in writing attachment to cache");
        } catch (IOException e) {
            LogUtils.e(LOG_TAG, e, "Error in writing attachment to cache");
        }
        // perform a second insert to put the updated size and downloaded size values in
        resolver.insert(uri, toContentValues());
    } catch (MessagingException e) {
        LogUtils.e(LOG_TAG, e, "Error parsing eml attachment");
    }
}

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