文件的简单读写操作

 

 

    用openFileOutput()方法保存的文件，是直接保存在手机空间中的，一般适合保存较小的文件；

 

写入：

    public boolean writeFile(String fileName, String content) {
        try {
            FileOutputStream stream  = openFileOutput(fileName, MODE_PRIVATE);
            byte[]           buffers = content.getBytes();

            stream.write(buffers);
            stream.flush();//---清空缓存
            stream.close();
            return true;
        }
        catch (Exception ex) {
            ex.printStackTrace();
            return false;
        }
    }

 

 

读出：

    public String readFile(String fileName) {
        String content = "";
        try {
            FileInputStream stream  = openFileInput(fileName);
            int             length  = stream.available();
            byte[]          buffers = new byte[length];

            stream.read(buffers);
            content = new String(buffers);
        }
        catch(Exception ex) {
            ex.printStackTrace();
        }
        return content;
    }