Question

我有一个Android应用程序，当用户登录时，员工ID从一个活动转移到另一个活动。这通常很好，但是当我使用tab控件进行这两个活动时。员工ID不会从一个活动转到另一个活动。请告诉我在选项卡控件类中出错的地方。我需要在哪里调用函数将值从制表符控件转移到下一个类

我从登录界面发送数据的功能是

 resp = new JSONObject(result);

                    JSONObject Login1Result = resp.getJSONObject("LoginResult");
                    String strMessage = Login1Result.getString("EmployeeID");
Intent i = new Intent(getApplicationContext(), TabControl.class);
                           i.putExtra("new_variable_name",strMessage);
                           startActivity(i);

我通过

将其称为我的下两个课程

{
                 Bundle extras = getIntent().getExtras();
                  String strEmployeeID="";
                  if (extras != null)
                  {

                      String value = extras.getString("new_variable_name");

                      strEmployeeID = value;
                  }


                Intent i = new Intent(getApplicationContext(), MYCLASS.class);
                i.putExtra("new_variable_name",strEmployeeID);
                startActivity(i); 


     }

，我的标签控件类

public class TabControl extends TabActivity 
{
    public static TabControl mTabControl;
    public static TextView textView;
    public static TabHost tabHost ;
    @SuppressWarnings("deprecation")
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        Resources ressources = getResources(); 
        TabHost tabHost = getTabHost(); 


        // Android tab

        Intent intentAndroid = new Intent().setClass(this, HourlyEntry.class);
        TabSpec tabSpecAndroid = tabHost
            .newTabSpec("Hourly Entry")
            .setIndicator("", ressources.getDrawable(R.drawable.tab_home))
            .setContent(intentAndroid);

        // Apple tab
        Intent intentApple = new Intent().setClass(this, LeaveApp.class);
        TabSpec tabSpecApple = tabHost
            .newTabSpec("Leave Application")
            .setIndicator("", ressources.getDrawable(R.drawable.tab_giveaward))
            .setContent(intentApple);
        tabHost.addTab(tabSpecAndroid);
        tabHost.addTab(tabSpecApple);


        //set Windows tab as default (zero based)
        tabHost.setCurrentTab(0);
    }
}

我使用员工ID的微调器

public void addItemsOnSpinner1() 

          {

          Bundle extras = getIntent().getExtras();
          String strEmployeeID="";
          if (extras != null) {

              String value = extras.getString("new_variable_name");
//            Toast.makeText(getBaseContext(),  value, Toast.LENGTH_LONG).show();
              strEmployeeID = value;


          }


          JSONObject login = new JSONObject();
          try
          {
            login.put("EmployeeID",strEmployeeID);
            //login.put("Password", etCountry.getText().toString());

            JSONObject finaldata = new JSONObject();
            finaldata.put("ProjectRequest", login);

Answer 1

当您从Intent获取数据时，您正在Bundle传递数据。这是唯一的问题。

尝试以下代码。

// To get Data in Tab control class
strEmployeeID = getIntent().getStringExtra("new_variable_name");

更新代码：

// declare at the top in TabControl class
public static String strEmployeeID = "";

Answer 2

尝试做这样的事情

Bundle extras = getIntent().getExtras();
          String strEmployeeID="";

         TabSpec photospec = tabHost.newTabSpec("Hourly");
            // setting Title and Icon for the Tab
            photospec.setIndicator("Hourly Entry");

              if (extras != null)
              {

                  String value = extras.getString("new_variable_name");
//                Toast.makeText(getBaseContext(),  value, Toast.LENGTH_LONG).show();
                  strEmployeeID = value;
              }


             Intent photosIntent = new Intent(getApplicationContext(), HourlyEntry.class);
             photosIntent.putExtra("new_variable_name",strEmployeeID);
             photospec.setContent(photosIntent);

选项卡控件类无法从登录屏幕获取数据

2 个答案: