Android文件缓存的简单应用Acache

原ASimpleCache GitHub地址：https://github.com/yangfuhai/ASimpleCache

1、使用时需要注意：readLine会清除换行符，且在大量换行时影响效率

 /**     * 读取 String数据     *     * @param key     * @return String 数据     */    public String getAsString(String key) {        //中文可能会乱码        File file = mCache.get(key);        if (!file.exists())            return null;        boolean removeFile = false;        BufferedInputStream bis = null;        try {            FileInputStream fis = null;            fis = new FileInputStream(file);            bis = new BufferedInputStream(fis);            String content = "";            //自己定义一个缓冲区            byte[] buffer = new byte[1024 * 8];            int flag = 0;            while ((flag = bis.read(buffer)) != -1) {                content += new String(buffer, 0, flag);            }            if (!Utils.isDue(content)) {                return Utils.clearDateInfo(content);            } else {                removeFile = true;                return null;            }        } catch (Exception e) {            e.printStackTrace();        } finally {            if (removeFile) {                remove(key);            }            try {                if (bis != null) {                    bis.close();                }            } catch (IOException e) {                e.printStackTrace();            }        }        return null;//        大量换行数据会很耗时,且换行符会丢失//        File file = mCache.get(key);//        if (!file.exists())//            return null;//        boolean removeFile = false;//        BufferedReader in = null;//        try {//            in = new BufferedReader(new FileReader(file));//            String readString = "";//            String currentLine;//            while ((currentLine = in.readLine()) != null) {//                readString += currentLine;//            }//            if (!Utils.isDue(readString)) {//                return Utils.clearDateInfo(readString);//            } else {//                removeFile = true;//                return null;//            }//        } catch (IOException e) {//            e.printStackTrace();//            return null;//        } finally {//            if (in != null) {//                try {//                    in.close();//                } catch (IOException e) {//                    e.printStackTrace();//                }//            }//            if (removeFile)//                remove(key);//        }    }

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