Dynamically update keyboardType in Flutter

问题

I have a search TextFied and a Tabbar allowing to search by a number or a text.

When the TabBar is Fired/Tapped the keyboard type should be updated.

The listener allowing to detect the type is correctly fired
The build method is fired and the Textfield is rebuild with the keyboardType

But the keyboard type is not updated

_handleTabSelection() {
    if (_tabController.indexIsChanging) {
      switch (_tabController.index) {
        case kNameIndex:
          _searchBy = RunnersSubscriptionsSearchBy.name;
          _keyboardType = TextInputType.text;

          break;
        case kTibibIndex:
          _searchBy = RunnersSubscriptionsSearchBy.tibib;
          _keyboardType = TextInputType.number;
          //_focus.unfocus();
          break;
      }
      setState(() {
        ;
      });
    }
  }

And the Build searchBar with TextField

_buildSearchBar() {
    return Container(
      color: Theme.of(context).secondaryHeaderColor,
      child: new Padding(
        padding: const EdgeInsets.all(5),
        child: new Card(
          child: new ListTile(
            contentPadding: EdgeInsets.only(left: 8, right: 0),
            leading: new Icon(Icons.search),
            title: new TextField(
              keyboardType: _keyboardType,
              focusNode: _focus,
              controller: _searchTextFieldEditingController,
              decoration: new InputDecoration(
                  hintText: _searchHintTextFromSearchType(_searchBy),
                  border: InputBorder.none),
            ),
            trailing: new IconButton(
              icon: new Icon(Icons.cancel),
              onPressed: () {
                _searchTextFieldEditingController.clear();
                //onSearchTextChanged('');
              },
            ),
          ),
        ),
      ),
    );
  }

回答1:

You can use this:

FocusScope.of(context).requestFocus(_blankNode);
Future.delayed(Duration(seconds: 0)).then((v){
  FocusScope.of(context).requestFocus(_nameNode);
});

Maybe help you.

来源：https://stackoverflow.com/questions/53459261/dynamically-update-keyboardtype-in-flutter

标签

keyboard

Flutter