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;

} 

Answer 2

In your activity1 :

    Private  String buttonText ="";

    yourButtonClick.setOnClickListener(this);

    @Override
public void onClick(View view) {
 buttonText = getIntent().getStringExtra("btn_text");

    switch (view.getId()) {
        case R.id.button1:
            buttonText = "buttonOne";
            break;
        case R.id.button2:
            buttonText = "buttonTwo";
            break;
        case R.id.button8:
            buttonText = "buttonEight";
            break;

       }

     }

  }
 Intent intent = new Intent(Activity1.this,Activity2.class);
                    intent.putExtra("btnClicked", buttonText);
                   startActivity(intent);

// In list activity

 String btnClicked = getIntent().getStringArrayListExtra("btnClicked");