按文件名排序

    /*** 按文件名排序* @param filePath*/public static ArrayList<String> orderByName(String filePath) {ArrayList<String> FileNameList = new ArrayList<String>();File file = new File(filePath);File[] files = file.listFiles();List fileList = Arrays.asList(files);Collections.sort(fileList, new Comparator<File>() {@Overridepublic int compare(File o1, File o2) {if (o1.isDirectory() && o2.isFile())return -1;if (o1.isFile() && o2.isDirectory())return 1;return o1.getName().compareTo(o2.getName());}});for (File file1 : files) {if (file1.isDirectory()) {FileNameList.add(file1.getName());}}return FileNameList;}

基于名称：

/*** 按文件名排序* @param filePath*/public static ArrayList<String> orderByName(String filePath) {ArrayList<String> FileNameList = new ArrayList<String>();File file = new File(filePath);File[] files = file.listFiles();List fileList = Arrays.asList(files);Collections.sort(fileList, new Comparator<File>() {@Overridepublic int compare(File o1, File o2) {if (o1.isDirectory() && o2.isFile())return -1;if (o1.isFile() && o2.isDirectory())return 1;return o1.getName().compareTo(o2.getName());}});for (File file1 : files) {if (file1.isDirectory()) {FileNameList.add(file1.getName());}}return FileNameList;}

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基于最近修改时间：

/*** 按文件修改时间排序* @param filePath*/public static ArrayList<String> orderByDate(String filePath) {ArrayList<String> FileNameList = new ArrayList<String>();File file = new File(filePath);File[] files = file.listFiles();Arrays.sort(files, new Comparator<File>() {public int compare(File f1, File f2) {long diff = f1.lastModified() - f2.lastModified();if (diff > 0)return 1;else if (diff == 0)return 0;elsereturn -1;// 如果 if 中修改为 返回-1 同时此处修改为返回 1 排序就会是递减}public boolean equals(Object obj) {return true;}});for (File file1 : files) {if (file1.isDirectory()) {FileNameList.add(file1.getName());}}return FileNameList;}

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基于大小：

/*** 按文件大小排序* @param filePath*/public static ArrayList<String> orderBySize(String filePath) {ArrayList<String> FileNameList = new ArrayList<String>();File file = new File(filePath);File[] files = file.listFiles();List<File> fileList = Arrays.asList(files);Collections.sort(fileList, new Comparator<File>() {public int compare(File f1, File f2) {long s1 = getFolderSize(f1);long s2 = getFolderSize(f2);long diff = s1 - s2;if (diff > 0)return 1;else if (diff == 0)return 0;elsereturn -1;// 如果 if 中修改为 返回-1 同时此处修改为返回 1 排序就会是递减}public boolean equals(Object obj) {return true;}});for (File file1 : files) {if (file1.isDirectory()) {FileNameList.add(file1.getName());}}return FileNameList;}/*** 获取文件夹大小* @param file File实例* @return long*/public static long getFolderSize(File file) {long size = 0;try {java.io.File[] fileList = file.listFiles();for (int i = 0; i < fileList.length; i++) {if (fileList[i].isDirectory()) {size = size + getFolderSize(fileList[i]);} else {size = size + fileList[i].length();}}} catch (Exception e) {e.printStackTrace();}return size;}