package de.thedevstack.conversationsplus.utils; import android.annotation.SuppressLint; import android.content.ContentResolver; import android.content.ContentUris; import android.content.Context; import android.database.Cursor; import android.net.Uri; import android.os.Build; import android.os.Environment; import android.provider.DocumentsContract; import android.provider.MediaStore; import de.thedevstack.conversationsplus.ConversationsPlusApplication; public final class FileUtils { /** * Get a file path from a Uri. This will get the the path for Storage Access * Framework Documents, as well as the _data field for the MediaStore and * other file-based ContentProviders. * * @param uri The Uri to query. * @author paulburke */ @SuppressLint("NewApi") public static String getPath(final Uri uri) { if (uri == null) { return null; } final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT; final Context context = ConversationsPlusApplication.getAppContext(); // DocumentProvider if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) { // ExternalStorageProvider if (isExternalStorageDocument(uri)) { final String docId = DocumentsContract.getDocumentId(uri); final String[] split = docId.split(":"); final String type = split[0]; if ("primary".equalsIgnoreCase(type)) { return Environment.getExternalStorageDirectory() + "/" + split[1]; } // TODO handle non-primary volumes } // DownloadsProvider else if (isDownloadsDocument(uri)) { final String id = DocumentsContract.getDocumentId(uri); final Uri contentUri = ContentUris.withAppendedId( Uri.parse("content://downloads/public_downloads"), Long.valueOf(id)); return getDataColumn(context, contentUri, null, null); } // MediaProvider else if (isMediaDocument(uri)) { final String docId = DocumentsContract.getDocumentId(uri); final String[] split = docId.split(":"); final String type = split[0]; Uri contentUri = null; if ("image".equals(type)) { contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI; } else if ("video".equals(type)) { contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI; } else if ("audio".equals(type)) { contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI; } final String selection = "_id=?"; final String[] selectionArgs = new String[]{ split[1] }; return getDataColumn(context, contentUri, selection, selectionArgs); } } // MediaStore (and general) else if (ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) { String path = getDataColumn(context, uri, null, null); if (path != null) { File file = new File(path); if (!file.canRead()) { return null; } } return path; } // File else if (ContentResolver.SCHEME_FILE.equals(uri.getScheme())) { return uri.getPath(); } return null; } /** * 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. * @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 = "_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(Exception e) { return null; } finally { if (cursor != null) { cursor.close(); } } return null; } /** * @param uri The Uri to check. * @return Whether the Uri authority is ExternalStorageProvider. */ public static boolean isExternalStorageDocument(Uri uri) { return "com.android.externalstorage.documents".equals(uri.getAuthority()); } /** * @param uri The Uri to check. * @return Whether the Uri authority is DownloadsProvider. */ public static boolean isDownloadsDocument(Uri uri) { return "com.android.providers.downloads.documents".equals(uri.getAuthority()); } /** * @param uri The Uri to check. * @return Whether the Uri authority is MediaProvider. */ public static boolean isMediaDocument(Uri uri) { return "com.android.providers.media.documents".equals(uri.getAuthority()); } /** * @param filename The filename to extract extension from * @return last extension or empty string */ public static String getLastExtension(final String filename) { if (filename == null || filename.isEmpty()) { return ""; } final int lastDotPosition = filename.lastIndexOf('.'); final String lastPart = lastDotPosition != -1 ? filename.substring(lastDotPosition + 1) : ""; return lastPart; } /** * @param filename The filename to extract extension from * @return second to last extension or empty string */ public static String getSecondToLastExtension(final String filename) { if (filename == null || filename.isEmpty()) { return ""; } final int lastDotPosition = filename.lastIndexOf('.'); final int secondToLastDotPosition = filename.lastIndexOf('.', lastDotPosition - 1); final String secondToLastPart = secondToLastDotPosition != -1 ? filename.substring(secondToLastDotPosition + 1, lastDotPosition) : ""; return secondToLastPart; } private FileUtils() { // Utility class - do not instantiate } }