Example usage for android.database Cursor moveToFirst

List of usage examples for android.database Cursor moveToFirst

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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:Main.java

public static String getRealPathByUri(Context context, Uri uri) {
    if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) {
        return uri.getPath();
    }//w w  w .  j  a v a2 s  .c o m

    try {
        ContentResolver resolver = context.getContentResolver();
        String[] proj = new String[] { MediaStore.Images.Media.DATA };
        Cursor cursor = MediaStore.Images.Media.query(resolver, uri, proj);
        String realPath = null;
        if (cursor != null) {
            int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            if (cursor.getCount() > 0 && cursor.moveToFirst()) {
                realPath = cursor.getString(columnIndex);
            }
            cursor.close();
        }
        return realPath;
    } catch (Exception e) {
        return uri.getPath();
    }
}

From source file:Main.java

public static String getFilePathByContentResolver(Context context, Uri uri) {
    if (null == uri) {
        return null;
    }// ww  w.  j a  v a 2  s . co  m
    Cursor c = context.getContentResolver().query(uri, null, null, null, null);
    String filePath = null;
    if (null == c) {
        throw new IllegalArgumentException("Query on " + uri + " returns null result.");
    }
    try {
        if ((c.getCount() != 1) || !c.moveToFirst()) {
        } else {
            filePath = c.getString(c.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA));
        }
    } finally {
        c.close();
    }
    return filePath;
}

From source file:Main.java

public static String getThumbnailPathForLocalFile(Context context, Uri fileUri) {

    long fileId = getFileId(context, fileUri);
    MediaStore.Video.Thumbnails.getThumbnail(context.getContentResolver(), fileId,
            MediaStore.Video.Thumbnails.MICRO_KIND, null);

    Cursor thumbCursor = null;
    try {// w  w  w  .j  a  v  a2 s.  c  om
        thumbCursor = context.getContentResolver().query(MediaStore.Video.Thumbnails.EXTERNAL_CONTENT_URI,
                thumbColumns, MediaStore.Video.Thumbnails.VIDEO_ID + " = " + fileId, null, null);

        if (thumbCursor.moveToFirst()) {
            String thumbPath = thumbCursor
                    .getString(thumbCursor.getColumnIndex(MediaStore.Video.Thumbnails.DATA));
            return thumbPath;
        }

    } finally {
    }

    return null;
}

From source file:Main.java

/**
 * Get the value of the data column for this Uri. This is useful for
 * MediaStore Uris, and other file-based ContentProviders.
 *
 * @param context The context./*from w  w  w.  ja va2  s  .c o  m*/
 * @param uri The Uri to query.
 * @param selection (Optional) Filter used in the query.
 * @param selectionArgs (Optional) Selection arguments used in the query.
 * @return The value of the _data column, which is typically a file path.
 * @author paulburke
 */
public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {

    Cursor cursor = null;
    final String column = "_data";
    final String[] projection = { column };

    try {
        cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
        if (cursor != null && cursor.moveToFirst()) {
            if (DEBUG)
                DatabaseUtils.dumpCursor(cursor);

            final int column_index = cursor.getColumnIndexOrThrow(column);
            return cursor.getString(column_index);
        }
    } finally {
        if (cursor != null)
            cursor.close();
    }
    return null;
}

From source file:Main.java

/**
 * Get the real file path from URI registered in media store 
 * @param contentUri URI registered in media store 
 *///w  w  w .ja v a2 s .c o m
public static String getRealPathFromURI(Activity activity, Uri contentUri) {

    String releaseNumber = Build.VERSION.RELEASE;

    if (releaseNumber != null) {
        /* ICS Version */
        if (releaseNumber.length() > 0 && releaseNumber.charAt(0) == '4') {
            String[] proj = { MediaStore.Images.Media.DATA };
            String strFileName = "";
            CursorLoader cursorLoader = new CursorLoader(activity, contentUri, proj, null, null, null);
            Cursor cursor = cursorLoader.loadInBackground();
            if (cursor != null) {
                int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
                cursor.moveToFirst();
                if (cursor.getCount() > 0)
                    strFileName = cursor.getString(column_index);

                cursor.close();
            }
            return strFileName;
        }
        /* GB Version */
        else if (releaseNumber.startsWith("2.3")) {
            String[] proj = { MediaStore.Images.Media.DATA };
            String strFileName = "";
            Cursor cursor = activity.managedQuery(contentUri, proj, null, null, null);
            if (cursor != null) {
                int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

                cursor.moveToFirst();
                if (cursor.getCount() > 0)
                    strFileName = cursor.getString(column_index);

                cursor.close();
            }
            return strFileName;
        }
    }

    //---------------------
    // Undefined Version
    //---------------------
    /* GB, ICS Common */
    String[] proj = { MediaStore.Images.Media.DATA };
    String strFileName = "";
    Cursor cursor = activity.managedQuery(contentUri, proj, null, null, null);
    if (cursor != null) {
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

        // Use the Cursor manager in ICS         
        activity.startManagingCursor(cursor);

        cursor.moveToFirst();
        if (cursor.getCount() > 0)
            strFileName = cursor.getString(column_index);

        //cursor.close(); // If the cursor close use , This application is terminated .(In ICS Version)
        activity.stopManagingCursor(cursor);
    }
    return strFileName;
}

From source file:Main.java

/**
 * Get the value of the data column for this Uri. This is useful for
 * MediaStore Uris, and other file-based ContentProviders.
 *
 * @param context The context./* w  ww . j a  va  2s  .c  om*/
 * @param uri The Uri to query.
 * @param selection (Optional) Filter used in the query.
 * @param selectionArgs (Optional) Selection arguments used in the query.
 * @return The value of the _data column, which is typically a file path.
 */
private static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
    Cursor cursor = null;
    final String column = MediaStore.Images.Media.DATA;
    final String[] projection = { column };

    try {
        cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
        if (cursor != null && cursor.moveToFirst()) {
            final int column_index = cursor.getColumnIndexOrThrow(column);
            return cursor.getString(column_index);
        }
    } catch (IllegalArgumentException e) {
        e.printStackTrace();
    } finally {
        if (cursor != null) {
            cursor.close();
        }
    }
    return null;
}

From source file:Main.java

static public void dumpCursor(Cursor cursor) {
    final String LOG_TAG = "dumpCursor";
    if (cursor != null) {
        Log.d(LOG_TAG, "cursor " + cursor.getCount());
        for (int i = 0; i < cursor.getColumnCount(); i++)
            Log.d(LOG_TAG, "col " + i + " " + cursor.getColumnName(i));

        cursor.moveToFirst();
        String[] a = new String[cursor.getColumnCount()];
        while (!cursor.isAfterLast()) {
            for (int i = 0; i < a.length; i++)
                a[i] = cursor.getString(i);
            Log.d(LOG_TAG, Arrays.toString(a));
            cursor.moveToNext();//from www  .ja va  2s  .  c  o  m
        }

        cursor.moveToFirst();
    }
}

From source file:Main.java

/**
 * Get the value of the data column for this Uri. This is useful for
 * MediaStore Uris, and other file-based ContentProviders.
 * //w  ww  . j a  v a  2  s.c  o m
 * @param context
 *            The context.
 * @param uri
 *            The Uri to query.
 * @param selection
 *            (Optional) Filter used in the query.
 * @param selectionArgs
 *            (Optional) Selection arguments used in the query.
 * @return The value of the _data column, which is typically a file path.
 */
public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {

    Cursor cursor = null;
    final String column = MediaStore.MediaColumns.DATA;
    final String[] projection = { column };

    try {
        cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
        if (cursor != null && cursor.moveToFirst()) {
            final int column_index = cursor.getColumnIndexOrThrow(column);

            return cursor.getString(column_index);
        }
    } finally {
        if (cursor != null)
            cursor.close();
    }
    return null;
}

From source file:net.peterkuterna.android.apps.devoxxsched.util.SyncUtils.java

public static String getLocalMd5(ContentResolver resolver, String url) {
    final String syncId = Sync.generateSyncId(url);
    final Uri uri = Sync.buildSyncUri(syncId);
    Cursor cursor = resolver.query(uri, SyncQuery.PROJECTION, null, null, null);
    try {/*from w  w  w  .j a v a 2s.  c  om*/
        if (!cursor.moveToFirst())
            return "";
        return cursor.getString(SyncQuery.MD5);
    } finally {
        cursor.close();
    }
}

From source file:Main.java

public static LinkedList<Pair<Integer, String>> retrieveIntegerStringPairFromCursor(Cursor cursor,
        String integerColumnName, String stringColumnName) {
    LinkedList<Pair<Integer, String>> result = new LinkedList<Pair<Integer, String>>();

    if (null == cursor || 0 == cursor.getCount()) {
        return result;
    }//from   ww w  .java 2 s.co m

    try {
        for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
            Integer integerVal = cursor.getInt(cursor.getColumnIndex(integerColumnName));
            String stringVal = cursor.getString(cursor.getColumnIndexOrThrow(stringColumnName));
            result.add(new Pair(integerVal, stringVal));
        }
    } catch (Exception e) {
        //do nothing.
    } finally {
        cursor.close();
    }

    return result;
}