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How can multiple word searches be implemented in Flutter?

asked 2023-06-02 03:08:00 +0000

djk gravatar image

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answered 2023-06-02 03:21:02 +0000

woof gravatar image

Multiple word searches can be implemented in Flutter using a search bar and a list view.

  1. Create a search bar widget using the TextField widget.
  2. Add a controller to the TextField widget to manage the text in the search bar.
  3. Create a custom list view widget to display the search results.
  4. Use the ListView.builder widget to build the list view dynamically based on the search results.
  5. Implement a search function that filters the data based on the keywords entered in the search bar.
  6. Call the search function every time the search bar text changes using the onChanged() callback function.
  7. Display the filtered results in the custom list view widget.

Here is an example implementation of multiple word searches in Flutter:

  1. Create a search bar widget:
  TextField(
    controller: TextEditingController(),
    onChanged: (value) {
      search(value);
    },
    decoration: InputDecoration(
      labelText: "Search",
      border: OutlineInputBorder(
        borderRadius: BorderRadius.circular(10),
      ),
    ),
  ),
  1. Create a custom list view widget:
  Widget buildListView() {
    if (filteredData.isEmpty) {
      return Text("No results found");
    } else {
      return ListView.builder(
        itemBuilder: (context, index) {
          return ListTile(
            title: Text(filteredData[index].title),
            subtitle: Text(filteredData[index].description),
          );
        },
        itemCount: filteredData.length,
      );
    }
  }
  1. Implement a search function:
  void search(String value) {
    setState(() {
      filteredData = data
          .where((element) =>
              element.title.toLowerCase().contains(value.toLowerCase()) ||
              element.description.toLowerCase().contains(value.toLowerCase()))
          .toList();
    });
  }
  1. Use the search bar and custom list view in the build method:
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text("Search"),
      ),
      body: Column(
        children: [
          SizedBox(height: 20),
          Padding(
            padding: const EdgeInsets.all(8.0),
            child: TextField(
              controller: TextEditingController(),
              onChanged: (value) {
                search(value);
              },
              decoration: InputDecoration(
                labelText: "Search",
                border: OutlineInputBorder(
                  borderRadius: BorderRadius.circular(10),
                ),
              ),
            ),
          ),
          SizedBox(height: 20),
          Expanded(child: buildListView()),
        ],
      ),
    );
  }
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Asked: 2023-06-02 03:08:00 +0000

Seen: 2 times

Last updated: Jun 02 '23