To Pass Only Incremented Value To Listview On Nextpage

I am able to send data on listview in nextpage.But problem is that items with quantity 0 is also passed.I want to show items whose quantity is incremented and not all items present

Solution 1:

It's because you passing original list. You're updating values inside adapter and passing not updated list fromadapter, but original. Write method inside adapter to return your updated list.

Inside Custom.java adapter:

public ArrayList<Items> getItems(){
    ArrayList<Items> quantityArrayList;
    Items item;
    for (int i = 0; i < itemsArrayList.size(); i++){
        item =  itemsArrayList.get(i);
        if (item.getQuantity() > 0)
        quantityArrayList.add(item);
    }

    return quantityArrayList;
}

And inside MainActivity onCreate() should look like this. After clicking show button you're going to get Items from Custom Adapter whose quantity >0.

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    list_item = (ListView) findViewById(R.id.listdetails);

    searchview=(SearchView)findViewById(R.id.searchView);
    show = (Button) findViewById(R.id.btnview);
    itemsArrayList=newArrayList<>();
    itemsArrayList.add(newItems(1,"Book",20,0,0));
    itemsArrayList.add(newItems(2,"Pen",25,0,0));
    itemsArrayList.add(newItems(3,"Scale",10,0,0));
    itemsArrayList.add(newItems(4,"Eraser",5,0,0));

    Customc=newCustom(this,itemsArrayList);
    list_item.setAdapter(c);
    list_item.setTextFilterEnabled(true);
    setupSearchView();

    show.setOnClickListener(newView.OnClickListener() {

        @OverridepublicvoidonClick(View v) {
            Intentintent=newIntent(MainActivity.this, Trial.class);
            List<Items> quantityList = c.getItems();
            intent.putExtra("data", quantityList);
            startActivity(intent);
        }
    });

}