FBReader打开txt优化方案，加入本地格式好后得数据写入和读取
///------------- 下面代码用于获取缓存的内容，就不用去本地文件获取内容了 ----by nil----------------- public boolean getTxtFromCache() { String md5Path=MD5Util.md5(tempModel.Book.File.getPath()+"/"+tempModel.Book.File.getLongName()); String fileName=Paths.myLocalCacheDirectory()+"/"+ md5Path+".txt"; File file=new File(fileName); if(file.exists()) { getTheString(file); return true; }else { return false; } } public void getTheString(File file) {int size = (int)file.length();if (size < 0) {// L.l("==============file is null=======");}char[] block = new char[size / 2];InputStreamReader reader = null;try {reader = new InputStreamReader(new FileInputStream(file),"UTF-16LE");} catch (UnsupportedEncodingException e) {e.printStackTrace();} catch (FileNotFoundException e) {e.printStackTrace();}try {if (reader.read(block) != block.length) {}else{for(int offset=0;offset<block.length;){ final int labelLength = (int)block[offset++]; String contentString=new String(block,offset,labelLength); if (labelLength == 0||labelLength>block.length) { }else { txtReader.beginParagraph();txtReader.addData(contentString.toCharArray());txtReader.endParagraph(); } offset=offset+labelLength; }}} catch (IOException e) {e.printStackTrace();}try {reader.close();} catch (IOException e) {e.printStackTrace();} } public void writeLocalTxtToCache(String[] content) { String md5Path=MD5Util.md5(tempModel.Book.File.getPath()+"/"+tempModel.Book.File.getLongName()); String fileName=Paths.myLocalCacheDirectory()+"/"+ md5Path+".txt"; File file=new File(Paths.myLocalCacheDirectory()); if(!file.isDirectory()) { file.mkdirs(); } OutputStreamWriter writer;try {writer = new OutputStreamWriter(new FileOutputStream(fileName, true),"UTF-16LE");for(int i=0;i<content.length-1;i++){ char[] contentCharArray=content[i].toCharArray(); final int length=contentCharArray.length; //输入的内容的长度 char lengthChar=(char)length; char[] block=new char[length+1]; int offset=0; block[offset]=lengthChar; offset++; System.arraycopy(contentCharArray,0, block,1, block.length-1); writer.write(block);}writer.close();} catch (UnsupportedEncodingException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} }//--------上面的代码用于从缓存内获取内容---------by nil------------------2.研究fb的同学，可以修改之来提高打开速度。