Android files saved to the app and SD card

<span style= "FONT-SIZE:18PX;" >1. Permissions add <uses-permission android:name= "Android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>< Uses-permission android:name= "Android.permission.WRITE_EXTERNAL_STORAGE"/>public static String Getdatafolderpath (Context paramcontext) {return environment.getdatadirectory () + "/data/" + Paramco    Ntext.getpackagename () + "/files";    public static String Getmyfiledir (context context) {return Context.getfilesdir (). toString ();    public static String Getmycachedir (context context) {return Context.getcachedir (). toString (); }/** * @desc save content to file * @param filename * @param content * @throws Exception */public static V OID Save (context context, string fileName, string content, int module) {try {fileoutputstream os = con            Text.openfileoutput (fileName, module);            Os.write (Content.getbytes ());        Os.close (); } catch (Exception e) {e.Printstacktrace (); }}/** * @desc read file contents * @param fileName * @return */public static String read (Context Conte            XT, String FileName) {try {FileInputStream FIS = context.openfileinput (fileName);            Bytearrayoutputstream BOS = new Bytearrayoutputstream ();            Byte[] B = new byte[1024];            int len = 0;            while (len = Fis.read (b))! =-1) {bos.write (b, 0, Len);            } byte[] data = Bos.tobytearray ();            Fis.close ();            Bos.close ();        return new String (data);        } catch (Exception e) {e.printstacktrace ();    } return null;  /** * @desc Save the text to the file in the SD card * @param context * @param fileName * @param content * @throws IOException */public static void Savetosdcard (context context, string fileName, String content) throws Ioexceptio n{File File = new file (environment. getExternalStorageDirectory (), fileName);        FileOutputStream fos = new FileOutputStream (file);        Fos.write (Content.getbytes ());    Fos.close (); }/** * @desc read SD card file contents * @param fileName * @return * @throws IOException */public static Strin G Readsdcard (String fileName) throws IOException {File File = new file (Environment.getexternalstoragedirec        Tory (), fileName);        FileInputStream fis = new FileInputStream (file);        Bytearrayoutputstream BOS = new Bytearrayoutputstream ();        byte[] buffer = new byte[1024];        int len = 0;        while (len = fis.read (buffer))! =-1) {bos.write (buffer, 0, Len);        } byte[] data = Bos.tobytearray ();        Fis.close ();                Bos.close ();    return new String (data); }</span>

Android files saved to the app and SD card