写文件

public Boolean SaveDataToRom(String name, String pwd){
        Boolean flag = false;
        try{
            String content = name+":"+pwd;
            FileOutputStream fos = context.openFileOutput("data.txt", Context.MODE_WORLD_WRITEABLE|Context.MODE_WORLD_READABLE);
            fos.write(content.getBytes());
            fos.flush();
            fos.close();
            flag = true;
        } catch (Exception e) {
            // TODO: handle exception
            e.printStackTrace();
        }finally{
            return flag;
        }

    }