2023/5/16每日随笔

       今天，上了口语，数据库，python，口语上的很开心，数据库上的很恶心，报告不会写，怎么操作用户，服务器，python课上考试，下午对项目进行更改，主要改动的是数据传输，将数据线传输变得更为简单直接，主要多亏了提供的返回上一个activity方法，对于项目的优化更好了。

       首先，源fragment内添加内容

Button myButton = (Button) getActivity().findViewById(R.id.Add_Button);
myButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {

        Intent intent = new Intent(getActivity(), Add.class);
        Bundle bundle = new Bundle();
        bundle.putInt("User_id",User_id);
        intent.putExtras(bundle);
        //2023.5.16更改
        startActivityForResult(intent,1);
        // startActivity(intent);
    }
});

public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == 1)
        {
            if(resultCode == RESULT_OK)
            {
                int flag = data.getIntExtra("already_Login",-1);
               // System.out.println("收到了 == " + data.getIntExtra("already_Login",-1));
                if(flag == -1)
                {
                    Toast.makeText(getContext(), "出错了，主人", Toast.LENGTH_SHORT).show();
                }else
                {
                    Toast.makeText(getContext(), "收到了，主人", Toast.LENGTH_SHORT).show();
                    User_id = flag;
                    System.out.println("User_id " + User_id);
                    simpleAdapter = new SimpleAdapter(getActivity(),getData(),R.layout.my_menu,new String[]{"type","money"},new int[]{R.id.myMenu_type,R.id.myMenu_money});
                    listView.setAdapter(simpleAdapter);

//                    Intent intent1 = new Intent(getActivity(), Menu.class);
//                    Bundle bundle2 = new Bundle();
//                    bundle2.putInt("User_id",flag);
//                    intent1.putExtra("thesame",bundle2);
//                    intent1.putExtras(bundle2);
//                    startActivity(intent1);
//                    Intent intent = new Intent(getActivity(), Menu.class);
//                    //更新操作 2023.5.16
//                    System.out.println("flag    ===   " + flag);
//                    intent.putExtra("flag",flag);
//                    startActivity(intent);
//                    //setResult(RESULT_OK,intent);
//                    //finish();
                }

            }
        }
    }
跳转activity的添加内容

public void onClick(View view) {
     float Comsumermoney;
     String Comsumertype;
     String Comsumerresourse;
     //
    Comsumermoney = Float.parseFloat(ConsumeMoneyEdit.getText().toString());
    Comsumertype = type;
    Comsumerresourse = ConsumeSourseEdit.getText().toString();
    System.out.println("ConsumeMoneyEdit = " + ConsumeMoneyEdit.getText().toString());
    System.out.println("ConsumeTimeEdit = " + Consumerdate);
    System.out.println("ConsumeSourseEdit = " + ConsumeSourseEdit.getText().toString());
    System.out.println("Comsumer = " + comsumer);
    System.out.println("type = " + type);
    System.out.println("----------------------------------");
    Consume consume = new Consume(Consumerdate,Comsumermoney,Comsumertype,Comsumerresourse,comsumer);
    //数据库
    project helper = new project(Add.this);
    sqLiteDatabase = helper.getReadableDatabase();
    helper.AddConsume(sqLiteDatabase,consume);
    Intent intent = new Intent(Add.this, HomeFragment.class);
    //更新操作 2023.5.16
    System.out.println("comsumer    ===   " + comsumer);
    intent.putExtra("already_Login",comsumer);
    setResult(RESULT_OK,intent);

  /*  Bundle bundle = new Bundle();
    System.out.println("already_Login = " + comsumer);
    bundle.putInt("already_Login",comsumer);
    intent.putExtra("AfterAdd",bundle);
    startActivity(intent);
    System.out.println("添加界面的销毁");

   */
    finish();
}