Flutter search bar implement?

Hello i  am loading json from local assets file and show in listview in my flutter app anyone know how to implement searchbar  here is my code
      body: Container(
    <pre>      child: Center(
            // Use future builder and DefaultAssetBundle to load the local JSON file
            child: FutureBuilder(
                future: DefaultAssetBundle
                    .of(context)
                    .loadString('assets/hebrew.json'), builder: (context, snapshot) {
                  // Decode the JSON
                  var new_data = json.decode(snapshot.data.toString());
                  return ListView.builder(
                    // Build the ListView
                    itemBuilder: (BuildContext context, int index) {
                      return GestureDetector(
                        onTap: (){
                       _showMyDialog(new_data[index]['eng'],new_data[index]['hebrew'],new_data[index]['urdu']);
                       },
                        child: Card(
                          child: Padding(
                            padding: EdgeInsets.all(20.0),
                            child: Column(
                              crossAxisAlignment: CrossAxisAlignment.stretch,
                              children: <Widget>[
                                Text(new_data[index]['eng']),
                                SizedBox(height: 10,),
                                Text(new_data[index]['hebrew']),
                                SizedBox(height: 10,),
                                Text(new_data[index]['urdu'])
                              ],
                            ),
                          ),
                        ),
                      );
                    },
                    itemCount: new_data == null ? 0 : new_data.length,
                  );
                }),
          ),
        ))