How to transfer data from one Activity to two at once?

Question

Android

Hello, I started writing an application for Android and I had a question, how to transfer data from one Activity to two at once ?
I will describe my task more precisely, I have the first activity MainActivity, by clicking on the button another activity opens VremActivitywith inheritance from tabActivity
Here is the code:

public class VremActivity extends TabActivity {
    @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.vrem);
            
            // получаем TabHost
            TabHost tabHost = getTabHost();
            
            // инициализация была выполнена в getTabHost
            // метод setup вызывать не нужно
            
            TabHost.TabSpec tabSpec;
            
            tabSpec = tabHost.newTabSpec("tag1");
            tabSpec.setIndicator("Вкладка 1");
            tabSpec.setContent(new Intent(this, OneActivity.class) );
            tabHost.addTab(tabSpec);
            
            tabSpec = tabHost.newTabSpec("tag2");
            tabSpec.setIndicator("Вкладка 2");
            tabSpec.setContent(new Intent(this, TwoActivity.class));
            tabHost.addTab(tabSpec);
        }
    }

This activity displays two activities OneActivityand in the tabs. TwoActivity
So, from the activity MainActivityyou need to transfer data to OneActivityand TwoActivity.

Answer 1

You create internal Activities through Intents, so pass the incoming data to these Intents.

Answer 2

in the VremActivity class create a public method that returns what needs to be passed to OneActivity and TwoActivity, for example getFirstParam()
in OneActivity and TwoActivity respectively call this method

Log.i("MyLog", "firstParam=" +((VremActivity )this.getParent()).getFirstParam());

Answer 3

Does it make sense for you to split into different Activiti? It may be easier to do without Intent and process it in one Java class, changing only the layout form on demand.