Add Items from a EditText into a ListView sample App in Android

Question

I have a Problem with my thinking. I have 2 Actvities:

• MainActivity MainActivity
• MainAddMedActivity MainAddMedActivity

As you can see there are EditText Widgets in the second Activity. I want now that the content of them gets saved in the ListView of the MainActivity by pressing the floating action button in MainAddMedActivity.

I tried to use an adapter but i couldn't figure it out. Hope you can help me. I am using an extra xml for the layout in the list.

This is so far what I have:

1. MainActivity:

   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main);
   
   
   FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
   fab.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View view) {
   
           Intent intent = new Intent(view.getContext(), MainAddMedActivity.class);
           startActivity(intent);
       }
   });
   
   
   ListView mainListView = (ListView) findViewById(R.id.listView);
   listAdapter = new ArrayAdapter<String>(this, R.layout.single_row);
   mainListView.setAdapter(listAdapter);
   
   
   String bIntent = getIntent().getExtras().getString("CONTENT_SEARCH_MED"); //And now?
   
   }
   

2. MainAddMedActivity

   private EditText txtSearchMedicament;
   private EditText txtNumberMedicament;
   
   protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView(R.layout.activity_main_add_med);
   
   FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
   fab.setOnClickListener(new View.OnClickListener() {
       @Override
       public void onClick(View view) {
           EditText description = (EditText) findViewById(R.id.txtSearchMedicament);
           String text = description.getText().toString();
           // Now what?!
       }
   });
   
   getSupportActionBar().setDisplayHomeAsUpEnabled(true);
   
   this.txtSearchMedicament = (EditText) findViewById(R.id.txtSearchMedicament);
   this.txtNumberMedicament = (EditText) findViewById(R.id.txtNumberMedicament);
   
   Intent i = new Intent(this, MainActivity.class);
   i.putExtra("CONTENT_SEARCH_MED", txtSearchMedicament.getText().toString());
   i.putExtra("CONTENT_MED_NR", txtNumberMedicament.getText().toString());
   
   }
   

Answer 1

You need to use "startActivityForResult()" method. Following link explains perfectly.

How to manage `startActivityForResult` on Android?