Android Search Activity

Question

I have created an application which is just a list view with some values in it and each time I click an item, it starts a new intent. I want my list to be searchable, so I have added a search button on top of it.

I have seen some examples that uses local databases but I did not find a complete tutorial on how to implement this in my application.

What is the best way to do this? Can anyone reference me to a good site with examples or explain to me how this works?

Answer 1

This is not as straightforward as it might seem, but simple enough. You want to make your adapter (you need to have a custom adapter) implement the Filterable interface. Then when you "perform the filtering" you perform the query in the database and return the updated results, calling notifyDatasetChanged() . I couldn't find a good example quickly, but this one is good enough.

After that, you need to "connect" both the adapter's filter and an EditText. Add a TextWatcher to the EditText and in the afterTextChanged() call getFilter().filter(theText) .

That's more or less it.

Answer 2

See this demo.

I have implemented the ListView with search features based on the text entered in to EditText.

@Override
public void afterTextChanged(Editable s) {}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
    searchTextLength = searchEditText.getText().length();
    m_orders.clear();
    m_orders = new ArrayList<SearchData>();
    //SearchData o1 = new SearchData();
    SearchData o[]=new SearchData[search_list.length];
    for(int i=0; i<search_list.length; i++)
    {
        if(searchTextLength <= search_list[i].length())
        {
            if(searchEditText.getText().toString().equalsIgnoreCase((String) search_list[i].subSequence(0, searchTextLength)))
            {
                o[i]=new SearchData();
                o[i].setTitleName(search_list[i]);
                o[i].setsubTitleName(subTitle_list[i]);
                m_orders.add(o[i]);
            }
        }
    }

    this.m_adapter = new OrderAdapter(this, R.layout.search_row, m_orders);
    lv.setAdapter(this.m_adapter);
    m_adapter.notifyDataSetChanged();
    //getOrders();

    //lv1.setAdapter(new ArrayAdapter<String>(SearchActivity.this,R.layout.search_layout , arr_sort));
}

Hope it will help you for your condition.