package com.basic.project.idcardservice.idcard;
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import android.os.Environment;
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import android.os.StatFs;
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import android.util.Log;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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/**
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* Created by Administrator on 2018/7/25.
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*/
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public class FileUtils {
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public static boolean isSDCardState() {
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return Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED);
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}
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public static boolean isFileExist(String fileName) {
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File file = new File("绝对路径" + fileName);
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return file.exists();
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}
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public static boolean createFolder(String path) {
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File file = new File(path);
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return file.mkdir();
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}
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public static boolean createFile(String path, String fileName) {
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File file = new File(path + File.separator + fileName);
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if (file.exists()) {
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return false;
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} else {
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try {
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return file.createNewFile();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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return false;
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}
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public static boolean deleteFile(String path, String fileName) {
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File file = new File(path + File.separator + fileName);
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return file.exists() && file.delete();
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}
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public static boolean deleteDirection(File dir) {
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if (dir == null || !dir.exists() || dir.isFile()) {
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return false;
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}
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for (File file : dir.listFiles()) {
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if (file.isFile()) {
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file.delete();
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} else if (file.isDirectory()) {
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deleteDirection(file);
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}
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}
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dir.delete();
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return true;
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}
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public static void writeFile(String text, String fileStr, boolean isAppend) {
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try {
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File file = new File(fileStr);
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File parentFile = file.getParentFile();
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if (!parentFile.exists()) {
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parentFile.mkdirs();
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}
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if (!file.exists()) {
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file.createNewFile();
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}
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FileOutputStream f = new FileOutputStream(fileStr, isAppend);
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f.write(text.getBytes());
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f.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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public static boolean copyFile(String srcPath, String destDir) {
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boolean flag = false;
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File srcFile = new File(srcPath);
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if (!srcFile.exists()) {
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Log.i("FileUtils is copyFile：", "源文件不存在");
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return false;
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}
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String fileName = srcPath.substring(srcPath.lastIndexOf(File.separator));
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String destPath = destDir + fileName;
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if (destPath.equals(srcPath)) {
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Log.i("FileUtils is copyFile：", "源文件路径和目标文件路径重复");
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return false;
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}
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File destFile = new File(destPath);
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if (destFile.exists() && destFile.isFile()) {
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Log.i("FileUtils is copyFile：", "该路径下已经有一个同名文件");
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return false;
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}
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File destFileDir = new File(destDir);
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destFileDir.mkdirs();
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try {
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FileInputStream fis = new FileInputStream(srcPath);
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FileOutputStream fos = new FileOutputStream(destFile);
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byte[] buf = new byte[1024];
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int c;
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while ((c = fis.read(buf)) != -1) {
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fos.write(buf, 0, c);
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}
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fis.close();
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fos.close();
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flag = true;
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} catch (IOException e) {
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e.printStackTrace();
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}
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return flag;
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}
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public static boolean renameTo(String oldPath, String newPath) {
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if (oldPath.equals(newPath)) {
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Log.i("FileUtils is renameTo：", "文件重命名失败：新旧文件名绝对路径相同");
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return false;
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}
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File oldFile = new File(oldPath);
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File newFile = new File(newPath);
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return oldFile.renameTo(newFile);
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}
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public static long getFileSize(String path) {
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File file = new File(path);
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return file.length();
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}
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public static double getDirSize(File file) {
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if (file.exists()) {
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if (file.isDirectory()) {
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File[] children = file.listFiles();
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double size = 0;
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for (File f : children)
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size += getDirSize(f);
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return size;
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} else {
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return (double) file.length() / 1024 / 1024;
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}
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} else {
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return 0.0;
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}
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}
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public static File[] getFileList(String path) {
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File file = new File(path);
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if (file.isDirectory()) {
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File[] files = file.listFiles();
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if (files != null) {
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return files;
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} else {
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return null;
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}
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} else {
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return null;
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}
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}
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public static int getFileCount(String path) {
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File directory = new File(path);
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File[] files = directory.listFiles();
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return files.length;
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}
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public long getSDCardTotal(String path) {
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if (null != path && path.equals("")) {
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StatFs statfs = new StatFs(path);
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long totalBlocks = statfs.getBlockCount();
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long blockSize = statfs.getBlockSize();
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return totalBlocks * blockSize / 1024 / 1024;
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} else {
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return 0;
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}
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}
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public long getSDCardFree(String path) {
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if (null != path && path.equals("")) {
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StatFs statfs = new StatFs(path);
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long availaBlocks = statfs.getAvailableBlocks();
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long blockSize = statfs.getBlockSize();
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return availaBlocks * blockSize / 1024 / 1024;
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} else {
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return 0;
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}
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}
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}
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