package com.doumee.keyCabinet.utils.update;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.os.Build;
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import android.os.Environment;
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import android.util.Log;
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import java.io.BufferedOutputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.sql.Timestamp;
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import java.text.DecimalFormat;
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/**
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* 文件工具类
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*
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* @author spring sky
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*
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*/
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public class FileUtil {
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/**
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* 获取目录名称
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*
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* @param url
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* @return FileName
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*/
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public static String getFileName(String url) {
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int lastIndexStart = url.lastIndexOf("/");
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if (lastIndexStart != -1) {
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return url.substring(lastIndexStart + 1, url.length());
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} else {
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return new Timestamp(System.currentTimeMillis()).toString();
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}
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}
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/**
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* 文件是否存在
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*
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* @param path
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* @return
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*/
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public static boolean FileIsExist(String path) {
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File file = new File(path);
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return file.exists();
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}
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/**
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* 判断SD卡是否存在
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*
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* @return boolean
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*/
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public static boolean checkSDCard() {
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if (Environment.getExternalStorageState().equals(
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Environment.MEDIA_MOUNTED)) {
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return true;
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} else {
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return false;
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}
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}
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/**
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* 保存文件到指定目录
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*
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* @param context
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* @return 文件保存的目录
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*/
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public static String setMkdir(Context context) {
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String filePath = null;
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if (checkSDCard()) {
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filePath = Environment.getExternalStorageDirectory()
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+ File.separator + "com.ahrykj.Weddingg" + File.separator
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+ "downloads";
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} else {
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filePath = context.getCacheDir().getAbsolutePath() + File.separator
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+ "com.ahrykj.Weddingg" + File.separator + "downloads";
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}
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File file = new File(filePath);
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if (!file.exists()) {
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file.mkdirs();
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Log.e("file", "目录不存在 创建目录 ");
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} else {
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Log.e("file", "目录存在");
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}
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return filePath;
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}
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public static String getFile(Context context){
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File sdDir = null;
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boolean sdCardExist = Environment.getExternalStorageState().equals(
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Environment.MEDIA_MOUNTED);// 判断sd卡是否存在
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if (sdCardExist) {
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if (Build.VERSION.SDK_INT>=29){
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//Android10之后
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sdDir = context.getExternalFilesDir(null);
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}else {
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sdDir = Environment.getExternalStorageDirectory();// 获取SD卡根目录
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}
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} else {
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sdDir = Environment.getRootDirectory();// 获取跟目录
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}
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return sdDir.toString();
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}
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/**
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* 获取路径
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*
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* @return
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* @throws IOException
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*/
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public static String getPath(Context context, String url) {
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String path = null;
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try {
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path = FileUtil.getFile(context) + File.separator
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+ "ticketmachine.apk";
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} catch (Exception e) {
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e.printStackTrace();
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}
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return path;
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}
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public static long getFileSize(File f) throws Exception// 取得文件夹大小
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{
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long size = 0;
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File flist[] = f.listFiles();
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if (flist != null) {
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for (int i = 0; i < flist.length; i++) {
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if (flist[i].isDirectory()) {
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size = size + getFileSize(flist[i]);
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} else {
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size = size + flist[i].length();
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}
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}
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}
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return size;
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}
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/**
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* 获取文件的大小
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*
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* @param fileS
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* 文件的大小
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* @return
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*/
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public static String FormetFileSize(long fileS) {// 转换文件大小
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DecimalFormat df = new DecimalFormat("0.0");// #.00
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String fileSizeString = "";
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if (fileS < 1024) {
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if (fileS < 70) {
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fileSizeString = "0B";
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} else {
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fileSizeString = df.format((double) fileS) + "B";
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}
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} else if (fileS < 1048576) {
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fileSizeString = df.format((double) fileS / 1024) + "K";
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} else if (fileS < 1073741824) {
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fileSizeString = df.format((double) fileS / 1048576) + "M";
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} else {
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fileSizeString = df.format((double) fileS / 1073741824) + "G";
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}
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return fileSizeString;
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}
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/**
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* 删除该目录下的指定文件
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*
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* @param filePath
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* 文件目录
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* @param fileName
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* 文件名
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* @return
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*/
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public static boolean deleteFile(String filePath, String fileName) {
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if (FileIsExist(filePath + fileName)) {
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File file = new File(filePath + fileName);
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return file.delete();
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}
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return true;
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}
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/**
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* 删除该路径指定的文件
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*
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* @param path
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* 文件路径
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* @return
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*/
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public static boolean deleteFile(String path) {
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if (FileIsExist(path)) {
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File file = new File(path);
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return file.delete();
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}
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return true;
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}
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/**
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* 删除方法 这里只会删除某个文件夹下的文件，如果传入的directory是个文件，将不做处理
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*
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* @param file
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*/
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public static void deleteFilesByDirectory(File file) {
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if (file.isFile()) {
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file.delete();
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return;
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}
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if (file.isDirectory()) {
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File[] childFiles = file.listFiles();
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if (childFiles == null || childFiles.length == 0) {
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file.delete();
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return;
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}
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for (int i = 0; i < childFiles.length; i++) {
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deleteFilesByDirectory(childFiles[i]);
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}
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file.delete();
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}
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}
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//将Bitmap转换成File
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public static File saveBitmapFile(Bitmap bitmap){
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File file=new File("/sdcard/face.jpg");//将要保存图片的路径
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try {
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BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(file));
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bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos);
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bos.flush();
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bos.close();
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} catch (IOException e) {
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return null;
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}
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return file;
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}
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}
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