Example usage for android.database Cursor moveToFirst

Introduction

In this page you can find the example usage for android.database Cursor moveToFirst.

Prototype

boolean moveToFirst();

Source Link

Document

Move the cursor to the first row.

Usage

From source file:com.ubuntuone.android.files.provider.MetaUtilities.java

public static String getPublicUrl(final String resourcePath) {
    final String[] projection = new String[] { Nodes.NODE_PUBLIC_URL };
    final String selection = Nodes.NODE_RESOURCE_PATH + "=?";
    final String[] selectionArgs = new String[] { resourcePath };
    Cursor c = sResolver.query(Nodes.CONTENT_URI, projection, selection, selectionArgs, null);
    String url = null;//from  www.ja  v a2  s  .c om
    try {
        if (c.moveToFirst()) {
            url = c.getString(c.getColumnIndex(Nodes.NODE_PUBLIC_URL));
        }
    } finally {
        c.close();
    }
    return TextUtils.isEmpty(url) ? null : url;
}

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From source file:de.escoand.readdaily.DownloadHandler.java

public static float downloadProgress(final Context context, final String name) {
    Cursor cursor = Database.getInstance(context).getDownloads();
    long id = 0;//from  ww  w . j a va  2 s .  c om
    float progress;

    // get download id
    while (cursor.moveToNext())
        if (cursor.getString(cursor.getColumnIndex(Database.COLUMN_SUBSCRIPTION)).equals(name)) {
            id = cursor.getLong(cursor.getColumnIndex(Database.COLUMN_ID));
            break;
        }
    cursor.close();
    if (id <= 0)
        return SUBSCRIPTION_DOWNLOAD_UNKNOWN;

    // get download
    cursor = ((DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE))
            .query(new DownloadManager.Query().setFilterById(id));
    if (!cursor.moveToFirst()) {
        Database.getInstance(context).removeDownload(id);
        return DOWNLOAD_ID_UNKNOWN;
    }

    // get progress
    progress = cursor.getFloat(cursor.getColumnIndex(DownloadManager.COLUMN_BYTES_DOWNLOADED_SO_FAR))
            / cursor.getFloat(cursor.getColumnIndex(DownloadManager.COLUMN_TOTAL_SIZE_BYTES));

    cursor.close();
    return progress;
}

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From source file:com.ubuntuone.android.files.provider.MetaUtilities.java

public static boolean isCached(String resourcePath) {
    String[] projection = new String[] { Nodes.NODE_IS_CACHED };
    String selection = Nodes.NODE_RESOURCE_PATH + "=?";
    String[] selectionArgs = new String[] { resourcePath };
    Cursor c = sResolver.query(Nodes.CONTENT_URI, projection, selection, selectionArgs, null);
    if (c != null) {
        try {// w  w  w. j  a  va  2s.  c om
            if (c.moveToFirst()) {
                return c.getInt(c.getColumnIndex(Nodes.NODE_IS_CACHED)) != 0;
            }
        } finally {
            c.close();
        }
    }
    return false;
}

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From source file:com.ubuntuone.android.files.provider.MetaUtilities.java

public static boolean isDirectory(long id) {
    String[] projection = new String[] { Nodes.NODE_KIND };
    String selection = Nodes._ID + "=?";
    String[] selectionArgs = new String[] { String.valueOf(id) };
    final Cursor c = sResolver.query(Nodes.CONTENT_URI, projection, selection, selectionArgs, null);
    String type = null;/*from  w  ww. j  a va  2 s .co  m*/
    try {
        if (c.moveToFirst()) {
            type = c.getString(c.getColumnIndex(Nodes.NODE_KIND));
        }
    } finally {
        c.close();
    }
    return (type != null) ? U1NodeKind.DIRECTORY == U1NodeKind.valueOf(type.toUpperCase(Locale.US)) : false;
}

---

From source file:com.ubuntuone.android.files.provider.MetaUtilities.java

public static long getVolumeGeneration(String resourcePath) {
    String[] projection = new String[] { Volumes.VOLUME_GENERATION };
    String selection = Volumes.VOLUME_RESOURCE_PATH + "=?";
    String[] selectionArgs = new String[] { resourcePath };
    Cursor c = sResolver.query(Volumes.CONTENT_URI, projection, selection, selectionArgs, null);
    if (c != null) {
        try {/*from w  w  w  .j a v  a2  s. c o m*/
            if (c.moveToFirst()) {
                return c.getLong(c.getColumnIndex(Volumes.VOLUME_GENERATION));
            }
        } finally {
            c.close();
        }
    }
    return 0;
}

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From source file:Main.java

/**
 * Try to get the exif orientation of the passed image uri
 *
 * @param context// w w w.ja v a  2 s  .c  o m
 * @param uri
 * @return
 */
public static int getExifOrientation(Context context, Uri uri) {

    final String scheme = uri.getScheme();

    ContentProviderClient provider = null;
    if (scheme == null || ContentResolver.SCHEME_FILE.equals(scheme)) {
        return getExifOrientation(uri.getPath());
    } else if (scheme.equals(ContentResolver.SCHEME_CONTENT)) {
        try {
            provider = context.getContentResolver().acquireContentProviderClient(uri);
        } catch (SecurityException e) {
            return 0;
        }

        if (provider != null) {
            Cursor result;
            try {
                result = provider.query(uri, new String[] { MediaStore.Images.ImageColumns.ORIENTATION,
                        MediaStore.Images.ImageColumns.DATA }, null, null, null);
            } catch (Exception e) {
                e.printStackTrace();
                return 0;
            }

            if (result == null) {
                return 0;
            }

            int orientationColumnIndex = result.getColumnIndex(MediaStore.Images.ImageColumns.ORIENTATION);
            int dataColumnIndex = result.getColumnIndex(MediaStore.Images.ImageColumns.DATA);

            try {
                if (result.getCount() > 0) {
                    result.moveToFirst();

                    int rotation = 0;

                    if (orientationColumnIndex > -1) {
                        rotation = result.getInt(orientationColumnIndex);
                    }

                    if (dataColumnIndex > -1) {
                        String path = result.getString(dataColumnIndex);
                        rotation |= getExifOrientation(path);
                    }
                    return rotation;
                }
            } finally {
                result.close();
            }
        }
    }
    return 0;
}

---

From source file:com.ubuntuone.android.files.provider.MetaUtilities.java

/**
 * For a given file {@link Uri} string, we check if its hash has a
 * corresponding entry in the {@link MetaProvider}, telling thus whether the
 * file from under given {@link Uri} string has been already uploaded.
 * //w  w  w.j  a va 2  s . c  o  m
 * @param uriString
 *            the uri string which content we are checking
 * @return resourcePath if content under uri has been already uploaded,
 *         null otherwise
 */
public static String isUploaded(String uriString) {
    File file = null;
    String fileHash = null;

    if (uriString.startsWith(ContentResolver.SCHEME_CONTENT)) {
        final String[] projection = new String[] { MediaColumns.DATA };
        final Cursor c = sResolver.query(Uri.parse(uriString), projection, null, null, null);
        try {
            if (c.moveToFirst()) {
                String data = c.getString(c.getColumnIndex(MediaColumns.DATA));
                file = new File(data);
            } else {
                return null;
            }
        } finally {
            c.close();
        }
    } else if (uriString.startsWith(ContentResolver.SCHEME_FILE)) {
        final URI fileURI = URI.create(Uri.encode(uriString, ":/"));
        file = new File(fileURI);
    } else {
        Log.e(TAG, "Tried to check malformed uri string: " + uriString);
        return null;
    }

    try {
        if (file != null && file.exists()) {
            fileHash = HashUtils.getSha1(file);
            Log.d(TAG, String.format("Computed hash: '%s'", fileHash));
        } else {
            throw new FileNotFoundException("isUploaded()");
        }
    } catch (Exception e) {
        Log.e(TAG, "Can't compute file hash!", e);
        return null;
    }

    final String[] projection = new String[] { Nodes.NODE_RESOURCE_PATH };
    final String selection = Nodes.NODE_HASH + "=?";
    final String[] selectionArgs = new String[] { fileHash };
    final Cursor c = sResolver.query(Nodes.CONTENT_URI, projection, selection, selectionArgs, null);
    String resourcePath = null;
    try {
        if (c.moveToFirst()) {
            resourcePath = c.getString(c.getColumnIndex(Nodes.NODE_RESOURCE_PATH));
            Log.d(TAG, "Corresponding file hash found: " + resourcePath);
        } else {
            Log.d(TAG, "Corresponding file hash not found.");
        }
    } finally {
        c.close();
    }
    return resourcePath;
}

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From source file:com.ubuntuone.android.files.provider.MetaUtilities.java

/**
 * Calculates directory content size, recursively if necessary.
 * /*from  w  w w .  j  a v a2  s  . c om*/
 * @param resourcePath
 *            the directory resource path to calculate size of
 * @param recursive
 *            the flag indicating recursive calculation
 * @return the resorucePath defined directory size
 */
public static long getDirectorySize(final String resourcePath, final boolean recursive) {
    final String[] projection = new String[] { Nodes.NODE_RESOURCE_PATH, Nodes.NODE_KIND, Nodes.NODE_SIZE };
    final String selection = Nodes.NODE_PARENT_PATH + "=?";
    final String[] selectionArgs = new String[] { resourcePath };
    final Cursor c = sResolver.query(Nodes.CONTENT_URI, projection, selection, selectionArgs, null);
    U1NodeKind kind;
    long size = 0L;
    try {
        if (c.moveToFirst()) {
            do {
                kind = U1NodeKind
                        .valueOf(c.getString(c.getColumnIndex(Nodes.NODE_KIND)).toUpperCase(Locale.US));
                if (U1NodeKind.FILE == kind) {
                    size += c.getLong(c.getColumnIndex(Nodes.NODE_SIZE));
                } else if (U1NodeKind.DIRECTORY == kind && recursive) {
                    final String subDirResourcePath = c.getString(c.getColumnIndex(Nodes.NODE_RESOURCE_PATH));
                    size += getDirectorySize(subDirResourcePath, true);
                }
            } while (c.moveToNext());
        }
    } finally {
        c.close();
    }
    return size;
}

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From source file:com.ubuntuone.android.files.provider.MetaUtilities.java

public static U1Node getNodeByKey(String key) {
    String[] selectionArgs = new String[] { key };
    String selection = Nodes.NODE_KEY + "=?";
    String[] projection = Nodes.getDefaultProjection();
    final Cursor c = sResolver.query(Nodes.CONTENT_URI, projection, selection, selectionArgs, null);
    if (c != null) {
        try {//www  . j a va 2 s.com
            if (c.moveToFirst()) {
                String resourcePath;
                U1NodeKind kind;
                Boolean isLive = true;
                String path;
                String parentPath;
                String volumePath;
                Date whenCreated;
                Date whenChanged;
                Long generation;
                Long generationCreated;
                String contentPath;

                resourcePath = c.getString(c.getColumnIndex(Nodes.NODE_RESOURCE_PATH));
                kind = U1NodeKind
                        .valueOf(c.getString(c.getColumnIndex(Nodes.NODE_KIND)).toUpperCase(Locale.US));
                isLive = c.getInt(c.getColumnIndex(Nodes.NODE_IS_LIVE)) != 0;
                path = c.getString(c.getColumnIndex(Nodes.NODE_PATH));
                parentPath = c.getString(c.getColumnIndex(Nodes.NODE_PARENT_PATH));
                volumePath = c.getString(c.getColumnIndex(Nodes.NODE_VOLUME_PATH));
                whenCreated = new Date(c.getLong(c.getColumnIndex(Nodes.NODE_WHEN_CREATED)));
                whenChanged = new Date(c.getLong(c.getColumnIndex(Nodes.NODE_WHEN_CHANGED)));
                generation = c.getLong(c.getColumnIndex(Nodes.NODE_GENERATION));
                generationCreated = c.getLong(c.getColumnIndex(Nodes.NODE_GENERATION_CREATED));
                contentPath = c.getString(c.getColumnIndex(Nodes.NODE_CONTENT_PATH));

                return new U1Node(resourcePath, kind, isLive, path, parentPath, volumePath, key, whenCreated,
                        whenChanged, generation, generationCreated, contentPath);
            } else {
                return null;
            }
        } finally {
            c.close();
        }
    }
    return null;
}

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From source file:com.ubuntuone.android.files.provider.MetaUtilities.java

public static U1Node getNodeByResourcePath(String resourcePath) {
    String[] selectionArgs = new String[] { resourcePath };
    String selection = Nodes.NODE_RESOURCE_PATH + "=?";
    String[] projection = Nodes.getDefaultProjection();
    final Cursor c = sResolver.query(Nodes.CONTENT_URI, projection, selection, selectionArgs, null);
    if (c != null) {
        try {/*w  w  w. j ava2s .  c o m*/
            if (c.moveToFirst()) {
                String key;
                U1NodeKind kind;
                Boolean isLive = true;
                String path;
                String parentPath;
                String volumePath;
                Date whenCreated;
                Date whenChanged;
                Long generation;
                Long generationCreated;
                String contentPath;

                key = c.getString(c.getColumnIndex(Nodes.NODE_KEY));
                kind = U1NodeKind
                        .valueOf(c.getString(c.getColumnIndex(Nodes.NODE_KIND)).toUpperCase(Locale.US));
                isLive = c.getInt(c.getColumnIndex(Nodes.NODE_IS_LIVE)) != 0;
                path = c.getString(c.getColumnIndex(Nodes.NODE_PATH));
                parentPath = c.getString(c.getColumnIndex(Nodes.NODE_PARENT_PATH));
                volumePath = c.getString(c.getColumnIndex(Nodes.NODE_VOLUME_PATH));
                whenCreated = new Date(c.getLong(c.getColumnIndex(Nodes.NODE_WHEN_CREATED)));
                whenChanged = new Date(c.getLong(c.getColumnIndex(Nodes.NODE_WHEN_CHANGED)));
                generation = c.getLong(c.getColumnIndex(Nodes.NODE_GENERATION));
                generationCreated = c.getLong(c.getColumnIndex(Nodes.NODE_GENERATION_CREATED));
                contentPath = c.getString(c.getColumnIndex(Nodes.NODE_CONTENT_PATH));

                return new U1Node(resourcePath, kind, isLive, path, parentPath, volumePath, key, whenCreated,
                        whenChanged, generation, generationCreated, contentPath);
            } else {
                return null;
            }
        } finally {
            c.close();
        }
    }
    return null;
}

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