Delete unused FileUtils
MovingEarth
parent
0e1d22e8e3
commit
1d2d6a5c5a
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@ -1,503 +0,0 @@
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package sh.ftp.rocketninelabs.meditationassistant;
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/*
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* Copyright (C) 2007-2008 OpenIntents.org
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import android.annotation.TargetApi;
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import android.content.ContentResolver;
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import android.content.ContentUris;
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import android.content.Context;
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import android.content.Intent;
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import android.database.Cursor;
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import android.database.DatabaseUtils;
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import android.graphics.Bitmap;
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import android.net.Uri;
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import android.os.Build;
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import android.os.Environment;
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import android.provider.DocumentsContract;
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import android.provider.MediaStore;
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import android.util.Log;
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import android.webkit.MimeTypeMap;
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import java.io.File;
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import java.io.FileFilter;
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import java.text.DecimalFormat;
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import java.util.Comparator;
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/**
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* @author Peli
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* @author paulburke (ipaulpro)
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* @version 2013-12-11
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*/
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public class FileUtils {
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public static final String MIME_TYPE_AUDIO = "audio/*";
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public static final String MIME_TYPE_TEXT = "text/*";
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public static final String MIME_TYPE_IMAGE = "image/*";
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public static final String MIME_TYPE_VIDEO = "video/*";
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public static final String MIME_TYPE_APP = "application/*";
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public static final String HIDDEN_PREFIX = ".";
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/**
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* TAG for log messages.
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*/
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static final String TAG = "FileUtils";
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private static final boolean DEBUG = false; // Set to true to enable logging
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/**
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* File and folder comparator.
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*
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* @author paulburke
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*/
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public static Comparator<File> sComparator = new Comparator<File>() {
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@Override
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public int compare(File f1, File f2) {
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// Sort alphabetically by lower case, which is much cleaner
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return f1.getName().toLowerCase().compareTo(
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f2.getName().toLowerCase());
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}
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};
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/**
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* File (not directories) filter.
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*
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* @author paulburke
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*/
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public static FileFilter sFileFilter = new FileFilter() {
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@Override
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public boolean accept(File file) {
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final String fileName = file.getName();
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// Return files only (not directories) and skip hidden files
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return file.isFile() && !fileName.startsWith(HIDDEN_PREFIX);
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}
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};
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/**
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* Folder (directories) filter.
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*
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* @author paulburke
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*/
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public static FileFilter sDirFilter = new FileFilter() {
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@Override
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public boolean accept(File file) {
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final String fileName = file.getName();
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// Return directories only and skip hidden directories
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return file.isDirectory() && !fileName.startsWith(HIDDEN_PREFIX);
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}
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};
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private FileUtils() {
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} //private constructor to enforce Singleton pattern
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/**
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* Gets the extension of a file name, like ".png" or ".jpg".
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*
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* @param uri
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* @return Extension including the dot("."); "" if there is no extension;
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* null if uri was null.
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*/
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public static String getExtension(String uri) {
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if (uri == null) {
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return null;
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}
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int dot = uri.lastIndexOf(".");
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if (dot >= 0) {
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return uri.substring(dot);
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} else {
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// No extension.
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return "";
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}
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}
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/**
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* @return Whether the URI is a local one.
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*/
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public static boolean isLocal(String url) {
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return (url != null && !url.startsWith("http://") && !url.startsWith("https://"));
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}
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/**
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* @return True if Uri is a MediaStore Uri.
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* @author paulburke
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*/
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public static boolean isMediaUri(Uri uri) {
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return "media".equalsIgnoreCase(uri.getAuthority());
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}
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/**
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* Convert File into Uri.
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*
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* @param file
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* @return uri
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*/
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public static Uri getUri(File file) {
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if (file != null) {
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return Uri.fromFile(file);
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}
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return null;
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}
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/**
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* Returns the path only (without file name).
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*
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* @param file
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* @return
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*/
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public static File getPathWithoutFilename(File file) {
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if (file != null) {
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if (file.isDirectory()) {
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// no file to be split off. Return everything
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return file;
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} else {
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String filename = file.getName();
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String filepath = file.getAbsolutePath();
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// Construct path without file name.
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String pathwithoutname = filepath.substring(0,
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filepath.length() - filename.length());
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if (pathwithoutname.endsWith("/")) {
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pathwithoutname = pathwithoutname.substring(0, pathwithoutname.length() - 1);
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}
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return new File(pathwithoutname);
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}
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}
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return null;
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}
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/**
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* @return The MIME type for the given file.
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*/
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public static String getMimeType(File file) {
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String extension = getExtension(file.getName());
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if (extension.length() > 0)
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return MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension.substring(1));
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return "application/octet-stream";
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}
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/**
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* @return The MIME type for the give Uri.
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*/
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public static String getMimeType(Context context, Uri uri) {
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File file = new File(getPath(context, uri));
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return getMimeType(file);
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}
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/**
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* @param uri The Uri to check.
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* @return Whether the Uri authority is ExternalStorageProvider.
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* @author paulburke
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*/
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public static boolean isExternalStorageDocument(Uri uri) {
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return "com.android.externalstorage.documents".equals(uri.getAuthority());
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}
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/**
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* @param uri The Uri to check.
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* @return Whether the Uri authority is DownloadsProvider.
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* @author paulburke
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*/
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public static boolean isDownloadsDocument(Uri uri) {
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return "com.android.providers.downloads.documents".equals(uri.getAuthority());
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}
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/**
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* @param uri The Uri to check.
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* @return Whether the Uri authority is MediaProvider.
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* @author paulburke
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*/
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public static boolean isMediaDocument(Uri uri) {
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return "com.android.providers.media.documents".equals(uri.getAuthority());
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}
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/**
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* @param uri The Uri to check.
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* @return Whether the Uri authority is Google Photos.
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*/
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public static boolean isGooglePhotosUri(Uri uri) {
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return "com.google.android.apps.photos.content".equals(uri.getAuthority());
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}
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/**
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* Get the value of the data column for this Uri. This is useful for
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* MediaStore Uris, and other file-based ContentProviders.
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*
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* @param context The context.
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* @param uri The Uri to query.
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* @param selection (Optional) Filter used in the query.
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* @param selectionArgs (Optional) Selection arguments used in the query.
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* @return The value of the _data column, which is typically a file path.
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* @author paulburke
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*/
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public static String getDataColumn(Context context, Uri uri, String selection,
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String[] selectionArgs) {
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Cursor cursor = null;
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final String column = "_data";
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final String[] projection = {
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column
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};
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try {
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cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
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null);
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if (cursor != null && cursor.moveToFirst()) {
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if (DEBUG)
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DatabaseUtils.dumpCursor(cursor);
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final int column_index = cursor.getColumnIndexOrThrow(column);
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return cursor.getString(column_index);
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}
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} finally {
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if (cursor != null)
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cursor.close();
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}
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return null;
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}
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/**
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* Get a file path from a Uri. This will get the the path for Storage Access
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* Framework Documents, as well as the _data field for the MediaStore and
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* other file-based ContentProviders.<br>
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* <br>
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* Callers should check whether the path is local before assuming it
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* represents a local file.
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*
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* @param context The context.
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* @param uri The Uri to query.
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* @author paulburke
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* @see #isLocal(String)
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* @see #getFile(Context, Uri)
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*/
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@TargetApi(Build.VERSION_CODES.KITKAT)
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public static String getPath(final Context context, final Uri uri) {
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if (DEBUG)
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Log.d(TAG + " File -",
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"Authority: " + uri.getAuthority() +
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", Fragment: " + uri.getFragment() +
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", Port: " + uri.getPort() +
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", Query: " + uri.getQuery() +
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", Scheme: " + uri.getScheme() +
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", Host: " + uri.getHost() +
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", Segments: " + uri.getPathSegments().toString()
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);
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final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
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// DocumentProvider
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if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
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if (isExternalStorageDocument(uri)) {
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final String docId = DocumentsContract.getDocumentId(uri);
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final String[] split = docId.split(":");
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final String type = split[0];
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if ("primary".equalsIgnoreCase(type)) {
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return Environment.getExternalStorageDirectory() + "/" + split[1];
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}
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}
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// DownloadsProvider
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else if (isDownloadsDocument(uri)) {
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final String id = DocumentsContract.getDocumentId(uri);
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final Uri contentUri = ContentUris.withAppendedId(
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Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
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return getDataColumn(context, contentUri, null, null);
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}
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// MediaProvider
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else if (isMediaDocument(uri)) {
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final String docId = DocumentsContract.getDocumentId(uri);
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final String[] split = docId.split(":");
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final String type = split[0];
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Uri contentUri = null;
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if ("image".equals(type)) {
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contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
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} else if ("video".equals(type)) {
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contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
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} else if ("audio".equals(type)) {
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contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
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}
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final String selection = "_id=?";
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final String[] selectionArgs = new String[]{
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split[1]
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};
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return getDataColumn(context, contentUri, selection, selectionArgs);
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}
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}
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// MediaStore (and general)
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else if ("content".equalsIgnoreCase(uri.getScheme())) {
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// Return the remote address
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if (isGooglePhotosUri(uri))
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return uri.getLastPathSegment();
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return getDataColumn(context, uri, null, null);
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}
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// File
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else if ("file".equalsIgnoreCase(uri.getScheme())) {
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return uri.getPath();
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}
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return null;
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}
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/**
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* Convert Uri into File, if possible.
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*
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* @return file A local file that the Uri was pointing to, or null if the
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* Uri is unsupported or pointed to a remote resource.
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* @author paulburke
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* @see #getPath(Context, Uri)
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*/
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public static File getFile(Context context, Uri uri) {
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if (uri != null) {
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String path = getPath(context, uri);
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if (isLocal(path)) {
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return new File(path);
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}
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}
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return null;
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}
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/**
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* Get the file size in a human-readable string.
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*
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* @param size
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* @return
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* @author paulburke
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*/
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public static String getReadableFileSize(int size) {
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final int BYTES_IN_KILOBYTES = 1024;
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final DecimalFormat dec = new DecimalFormat("###.#");
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final String KILOBYTES = " KB";
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final String MEGABYTES = " MB";
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final String GIGABYTES = " GB";
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float fileSize = 0;
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String suffix = KILOBYTES;
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if (size > BYTES_IN_KILOBYTES) {
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fileSize = size / BYTES_IN_KILOBYTES;
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if (fileSize > BYTES_IN_KILOBYTES) {
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fileSize = fileSize / BYTES_IN_KILOBYTES;
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if (fileSize > BYTES_IN_KILOBYTES) {
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fileSize = fileSize / BYTES_IN_KILOBYTES;
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suffix = GIGABYTES;
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} else {
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suffix = MEGABYTES;
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}
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}
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}
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return dec.format(fileSize) + suffix;
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}
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/**
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* Attempt to retrieve the thumbnail of given File from the MediaStore. This
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* should not be called on the UI thread.
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*
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* @param context
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* @param file
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* @return
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* @author paulburke
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*/
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public static Bitmap getThumbnail(Context context, File file) {
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return getThumbnail(context, getUri(file), getMimeType(file));
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}
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/**
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* Attempt to retrieve the thumbnail of given Uri from the MediaStore. This
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* should not be called on the UI thread.
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*
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* @param context
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* @param uri
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* @return
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* @author paulburke
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*/
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public static Bitmap getThumbnail(Context context, Uri uri) {
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return getThumbnail(context, uri, getMimeType(context, uri));
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}
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/**
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* Attempt to retrieve the thumbnail of given Uri from the MediaStore. This
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* should not be called on the UI thread.
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*
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* @param context
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* @param uri
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* @param mimeType
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* @return
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* @author paulburke
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*/
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public static Bitmap getThumbnail(Context context, Uri uri, String mimeType) {
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if (DEBUG)
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Log.d(TAG, "Attempting to get thumbnail");
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if (!isMediaUri(uri)) {
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Log.e(TAG, "You can only retrieve thumbnails for images and videos.");
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return null;
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}
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Bitmap bm = null;
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if (uri != null) {
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final ContentResolver resolver = context.getContentResolver();
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Cursor cursor = null;
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try {
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cursor = resolver.query(uri, null, null, null, null);
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if (cursor.moveToFirst()) {
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final int id = cursor.getInt(0);
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if (DEBUG)
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Log.d(TAG, "Got thumb ID: " + id);
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if (mimeType.contains("video")) {
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bm = MediaStore.Video.Thumbnails.getThumbnail(
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resolver,
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id,
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MediaStore.Video.Thumbnails.MINI_KIND,
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null);
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} else if (mimeType.contains(FileUtils.MIME_TYPE_IMAGE)) {
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bm = MediaStore.Images.Thumbnails.getThumbnail(
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resolver,
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id,
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MediaStore.Images.Thumbnails.MINI_KIND,
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null);
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}
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}
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} catch (Exception e) {
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if (DEBUG)
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Log.e(TAG, "getThumbnail", e);
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} finally {
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if (cursor != null)
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cursor.close();
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}
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}
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return bm;
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}
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/**
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* Get the Intent for selecting content to be used in an Intent Chooser.
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*
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* @return The intent for opening a file with Intent.createChooser()
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* @author paulburke
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*/
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public static Intent createGetContentIntent() {
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// Implicitly allow the user to select a particular kind of data
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final Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
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// The MIME data type filter
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intent.setType("*/*");
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// Only return URIs that can be opened with ContentResolver
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intent.addCategory(Intent.CATEGORY_OPENABLE);
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return intent;
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}
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}
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