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  • Dynamically adding ListViewItem to Listview

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    To dynammically add new elements into listview we need a Edittext(etAddItem) to input the item/element, a Button(btnAdd) for adding item to the list, and a listview which shows elements in a vertical scrolling manner.

            etAddItem = (EditText)findViewById(R.id.etAddItem);
            btnAdd = (Button)findViewById(R.id.btnAdd);
            listView = (ListView)findViewById(R.id.lvList);
    

    btnAdd(Button) onClickListner, when user clicks on add button element/item is added to the arraylist.

     btnAdd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
    
            arrayList.add(etAddItem.getText().toString());
            adapter.notifyDataSetChanged();
            etAddItem.setText(null);
        }
    });
    

    finally, adapter works as a communication channel between Listview and ArrayList.

    arrayList = new ArrayList();
    adapter = new ArrayAdapter(getApplicationContext(), android.R.layout.simple_spinner_item, arrayList);
    
    // Here, you set the data in your ListView
    listView.setAdapter(adapter);
    

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