6.后台任务封装

后台任务封装：在没有网络的时候也可以修改用户名、头像等操作

    
    
    
    

     
     
     
     
 private void doOk() {
     
     
     
     
 String text = etName.getText().toString().trim();
     
     
     
     
 if (TextUtils.isEmpty(text)) {
     
     
     
     
 ToastUtil.show(getActivity(), "名字不能为空");
     
     
     
     
 return;
     
     
     
     
 }
     
     
     
     

     
     
     
     
 // 数据更新
     
     
     
     
 account.setName(text);
     
     
     
     
 dao.updateAccount(account);
     
     
     
     

     
     
     
     
 String url = "http://192.168.1.101:8080/ChatServer/user/name";
     
     
     
     

     
     
     
     
 Map<String, String> headers = new HashMap<String, String>();
     
     
     
     
 headers.put("account", account.getAccount());
     
     
     
     
 headers.put("token", account.getToken());
     
     
     
     

     
     
     
     
 Map<String, String> parameters = new HashMap<String, String>();
     
     
     
     
 parameters.put("name", text);
     
     
     
     

     
     
     
     
 // 1. 将请求加入到后台任务
     
     
     
     
 // 1) 封装
     
     
     
     
 NetTask request = new NetTask();
     
     
     
     
 request.setUrl(url);
     
     
     
     
 request.setMethod(0);
     
     
     
     
 request.setHeaders(headers);
     
     
     
     
 request.setParameters(parameters);
     
     
     
     

     
     
     
     
 // 2) 序列化
     
     
     
     
 String outPath = DirUtil.getTaskDir(getActivity()) + "/"
     
     
     
     
 + System.currentTimeMillis();
     
     
     
     
 try {
     
     
     
     
 SerializableUtil.write(request, outPath);
     
     
     
     
 } catch (Exception e) {
     
     
     
     
 e.printStackTrace();
     
     
     
     
 }
     
     
     
     

     
     
     
     
 // 3) 存储到数据库记录
     
     
     
     
 BackTask task = new BackTask();
     
     
     
     
 task.setOwner(account.getAccount());
     
     
     
     
 task.setPath(outPath);
     
     
     
     
 task.setState(0);
     
     
     
     
 new BackTaskDao(getActivity()).addTask(task);
     
     
     
     

     
     
     
     
 // 开启服务
     
     
     
     
 getActivity().startService(
     
     
     
     
 new Intent(getActivity(), BackgroundService.class));
     
     
     
     

     
     
     
     
 // 2. 页面跳转
     
     
     
     
 Intent intent = new Intent(getActivity(), HomeActivity.class);
     
     
     
     
 startActivity(intent);
     
     
     
     
 getActivity().finish();
     
     
     
     

     
     
     
     
 }