Android File Operation IO Technology

    /*** Read input stream data *@paraminstream *@return     */     Public Static byte[] Read (InputStream instream)throwsexception{Bytearrayoutputstream OutStream=NewBytearrayoutputstream (); byte[] buffer =New byte[1024]; intLen = 0;  while(len = instream.read (buffer))! =-1) {outstream.write (buffer,0, Len);        } instream.close (); returnOutstream.tobytearray (); }

    /**     *      * @paramFile name *@paramFile Contents *@throwsException Information*/     Public voidSave (string fileName, String filecontext)throwsException {//Private Mode of operation: The created file can only be accessed by the application, other apps cannot access the file, and a file created in private operation mode will overwrite the contents of the original file .FileOutputStream OutStream =context.openfileoutput (FileName, context.mode_private);        Outstream.write (Filecontext.getbytes ());    Outstream.close (); }    /**     *      * @paramFile name *@paramFile Contents *@throwsException Information*/     Public voidSavetosdcard (String fileName, String context)throwsException {//Private Mode of operation: The created file can only be accessed by the application, other apps cannot access the file, and a file created in private operation mode will overwrite the contents of the original file .File File =NewFile (Environment.getexternalstoragedirectory (), fileName); FileOutputStream OutStream=Newfileoutputstream (file);        Outstream.write (Context.getbytes ());    Outstream.close (); }

Android File Operation IO Technology