Android 将asserts文件夹内文件写入SD卡中

参考：

http://www.cnblogs.com/wainiwann/p/3274386.html

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    private void copyBigDataToSD(String strOutFileName)    {        try {            String path = PATH + "/" + strOutFileName;            InputStream myInput;            OutputStream myOutput = new FileOutputStream(path);            myInput = this.getAssets().open(strOutFileName);            byte[] buffer = new byte[1024];            int length = myInput.read(buffer);            while (length > 0) {                myOutput.write(buffer, 0, length);                length = myInput.read(buffer);            }            myOutput.flush();            myInput.close();            myOutput.close();        } catch (IOException e) {            e.printStackTrace();        }    }

    //从assets 文件夹中获取文件并读取数据    public void getFromAssets(String fileName){        try {            File file = new File(PATH, fileName);            if (file.exists()) { //if the file is exist, return                file.delete();            }            file.createNewFile();            InputStream in = getResources().getAssets().open(fileName);            //获取文件的字节数            int lenght = in.available();            //创建byte数组            byte[]  buffer = new byte[lenght];            //将文件中的数据读到byte数组中            in.read(buffer);            FileOutputStream out = new FileOutputStream(file);            out.write(buffer);            out.flush();            out.close();            Log.i(TAG, "------------------------------------load ok " + fileName);            //result = EncodingUtils.getString(buffer, ENCODING);        } catch (Exception e) {            e.printStackTrace();            Log.i(TAG, "--------------------------"+e.getMessage());        }    }

    public void getFromAssets(String fileName){        try {            File file = new File(PATH, fileName);            if (file.exists()) { //if the file is exist, return                file.delete();            }            file.createNewFile();            BufferedWriter bw = new BufferedWriter(new FileWriter(file));            InputStreamReader inputReader = new InputStreamReader( getResources().getAssets().open(fileName) );            BufferedReader bufReader = new BufferedReader(inputReader);            String line="";            String Result="";            while((line = bufReader.readLine()) != null) {                Result = line;                Result += "\n";                bw.write(Result);                bw.flush();            }            bw.close();            inputReader.close();            bufReader.close();            Log.i(TAG, "------------------------------------load ok "+fileName);        } catch (Exception e) {            e.printStackTrace();            Log.i(TAG, "--------------------------"+e.getMessage());        }        //     return "can not access assets";    }

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