数据传递到使用意图三项活动 [英] pass data to three activities using intent

问题描述

我有三个活动和流动谨信息>> 员工>> workDetailsTable 。我用意图传递数据。然而，当我看到存储在 SQLite的数据，我只能看到保存在员工表中的值。我让 NULL 在信息表值。为什么会出现这种情况？它是唯一能够将数据传递到两项活动只？

资讯

  button.setOnClickListener（新View.OnClickListener（）{
            公共无效的onClick（查看为arg0）{
                意向意图=新意图（背景下，WorkForce.class）;
                A = spinner.getSelectedItem（）的toString（）。
                intent.putExtra（一，一）;
                startActivity（意向）;
            }
        }）;
 

员工

  button.setOnClickListener
                （
                        新View.OnClickListener（）{
                        公共无效的onClick（视图v）{
                        意向意图=新意图（背景下，WorkDetailsTable.class）;
                         SUBCON = txt1.getText（）的toString（）。
                         startActivity（意向）;
                            }
                        }
                ）;
 

WorkDetailsTable

 最终字符串名称= getIntent（）getExtras（）的getString（A）。;
 最后弦乐分包商= getIntent（）getExtras（）的getString（转包）。;
按钮BTN1 =（按钮）findViewById（R.id.button2）;
        btn1.setOnClickListener（新View.OnClickListener（）{
            公共无效的onClick（查看为arg0）{                ts.insertTimeSheet（名）;
                WF.insertWorkForce（分包商）;
 

解决方案

你是不是通过 SUBCON 通过意图workdetails表字符串。通过他们就像你在信息活动一样。还需要在劳动力从意图获得 A 的价值和意图传递相同的值workdetails。

所以你的code的员工会像下面。

  button.setOnClickListener（新View.OnClickListener（）{
      公共无效的onClick（视图v）{
          意向意图=新意图（背景下，WorkDetailsTable.class）;
          SUBCON = txt1.getText（）的toString（）。
          intent.putExtra（。一，getIntent（）getExtras（）的getString（一））;
          intent.putExtra（转包，转包）;
          startActivity（意向）;
      }
    }）;
 

I have three activities and the flow should like Information>>workForce>>workDetailsTable. I pass the data by using intent. However, when I see the data stored in SQLite, I only able to see the values saved in WorkForce table. I getting NULL value in Information table. Why would this happen? It is only able to pass the data to two activities only?

Information

 button.setOnClickListener(new View.OnClickListener() {
            public void onClick(View arg0) {
                Intent intent = new Intent(context, WorkForce.class);
                a = spinner.getSelectedItem().toString();
                intent.putExtra("a",a);
                startActivity(intent);
            }
        });

WorkForce

button.setOnClickListener
                (
                        new View.OnClickListener() {
                        public void onClick(View v) {
                        Intent intent = new Intent(context, WorkDetailsTable.class);
                         subCon=txt1.getText().toString();
                         startActivity(intent);


                            }
                        }
                );

WorkDetailsTable

 final String name=getIntent().getExtras().getString("a");
 final String subContractors=getIntent().getExtras().getString("subCon");
Button btn1=(Button)findViewById(R.id.button2);
        btn1.setOnClickListener(new View.OnClickListener() {
            public void onClick(View arg0) {

                ts.insertTimeSheet(name);
                WF.insertWorkForce(subContractors);

解决方案

you are not passing subCon string through intent to workdetails table. pass them like you did in information activity. also you need to get value of a from intent in workforce and pass the same value in intent to workdetails.

so your code for WorkForce would be like below.

button.setOnClickListener ( new View.OnClickListener() {
      public void onClick(View v) {
          Intent intent = new Intent(context,WorkDetailsTable.class);
          subCon=txt1.getText().toString();
          intent.putExtra("a",getIntent().getExtras().getString("a"));
          intent.putExtra("subCon",subCon);
          startActivity(intent);
      }
    });

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