how to know which button is clicked in other activity

Question

I have two activities, Activity 1 and Activity 2. Activity 1 contains 8 buttons, each button sends some data to Activity 2 through intents and Activity 2 takes data and shows in listview. I want to show data in listview based on the condition so in Activity 2 I put every button data in a if block

So my problem is

What condition I should place in if(condition?) to know which button is clicked in Activity 1
my Activity 1

public void hmoral(View v){
        moralref.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {

            @Override
            public void onComplete(@NonNull Task<DocumentSnapshot> task) {
                if (task.isSuccessful()){
                    List<String> moraldata = new ArrayList<>();
                    Map<String,Object> map = task.getResult().getData();
                    for (Map.Entry<String,Object> entry:map.entrySet()){
                        moraldata.add(entry.getKey());
                        Log.d(TAG,entry.getKey());
                    }
                      Intent intent1 = new Intent(Activity1.this,Activity2.class);
                      intent1.putExtra("moraldata", (Serializable) moraldata);
                      startActivity(intent1);

                }
                }
        });
    }


    public  void hhorror(View v){
        horrorref.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
            @Override
            public void onComplete(@NonNull Task<DocumentSnapshot> task) {
                if (task.isSuccessful()){
                    List<String> horrordata = new ArrayList<>();
                    Map<String,Object> map = task.getResult().getData();
                    for (Map.Entry<String,Object> entry:map.entrySet()){
                        horrordata.add(entry.getKey());
                        Log.d(TAG,entry.getKey());
                    }
                      Intent intent = new Intent(Activity1.this,Activity2.class);
                      intent.putExtra("horrordata", (Serializable) horrordata);
                      startActivity(intent);

                }

            }
        });

    }
}

code of Activity2 below:

public class ListAcivity extends AppCompatActivity {
    ListView originallist;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_list_acivity);
        originallist = findViewById(R.id.originallist);


        if (){

          ArrayList<String> morallist = getIntent().getStringArrayListExtra("moraldata");
          ArrayAdapter<String> arrayAdapter = new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,morallist);
          originallist.setAdapter(arrayAdapter);
        }

         if (){
        ArrayList<String> horrorlist =  getIntent().getStringArrayListExtra("horrordata");
        ArrayAdapter<String>arrayAdapter1 = new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,horrorlist);
        originallist.setAdapter(arrayAdapter1);
         }


    }

Answer 1

how to know which button is clicked in other activity

Send Button id using intent to next Activity :

intent.putExtra("clicked_view_id", view.getId());

Now use clicked_view_id with switch case to compare with Button ids:

int clickedButtonID = getIntent().getIntExtra("clicked_view_id", 0);
switch(clickedButtonID){
  case R.id.button1:
   ...
   break;
  case R.id.button2:
   ... 
   break;

}