text
stringlengths
1
474
The most common issues you might encounter when testing
Firebase integration include the following:<topic_end>
<topic_start>
7. Next steps
At this point, the game has near-instant and
dependable synchronization of state across clients.
It lacks actual game rules:
what cards can be played when, and with what results.
This depends on the game itself and is left to you to try.At this point, the shared state of the match only includes
the two playing areas and the cards within them.
You can save other data into _matchRef, too,
like who the players are and whose turn it is.
If you’re unsure where to start,
follow a Firestore codelab or two
to familiarize yourself with the API.At first, a single match should suffice
for testing your multiplayer game with colleagues and friends.
As you approach the release date,
think about authentication and match-making.
Thankfully, Firebase provides a
built-in way to authenticate users
and the Firestore database structure can handle multiple matches.
Instead of a single match_1,
you can populate the matches collection with as many records as needed.An online match can start in a “waiting” state,
with only the first player present.
Other players can see the “waiting” matches in some kind of lobby.
Once enough players join a match, it becomes “active”.
Once again, the exact implementation depends on
the kind of online experience you want.
The basics remain the same:
a large collection of documents,
each representing one active or potential match.
<topic_end>
<topic_start>Flutter News Toolkit
The Flutter News Toolkit enables you to accelerate
development of a mobile news app.
The toolkit assists you in building a customized
template app with prebuilt features required
for most news apps, such authentication and
monetization. After generating your
template app, your primary tasks are to connect to your
data source, and to customize the UI to reflect
your brand.The Flutter News Toolkit includes critical features,
such as:You can use these pre-integrated features out of the box,
or modify and swap them with other functionality that
you prefer.Generating your template app requires answering
a few simple questions, as described on the
Flutter News Toolkit Overview doc page.For complete documentation on how to configure your project,
create a template app, develop the app, how to
handle authentication, theming, work with an API
server, and much more, check out the
Flutter News Toolkit documentation.You might also check out:info Note
This is an early release of the news toolkit and,
while it has been tested by early adopters, it
might have issues or rough edges. Please don’t
hesitate to file an issue.
<topic_end>
<topic_start>Building user interfaces with Flutter
Flutter widgets are built using a modern framework that takes
inspiration from React. The central idea is that you build
your UI out of widgets. Widgets describe what their view
should look like given their current configuration and state.
When a widget’s state changes, the widget rebuilds its description,
which the framework diffs against the previous description in order
to determine the minimal changes needed in the underlying render
tree to transition from one state to the next.info Note
If you would like to become better acquainted with Flutter by diving
into some code, check out building layouts,
and adding interactivity to your Flutter app.<topic_end>
<topic_start>
Hello world
The minimal Flutter app simply calls the runApp()
function with a widget:
<code_start>import 'package:flutter/material.dart';
void main() {
runApp(
const Center(
child: Text(
'Hello, world!',
textDirection: TextDirection.ltr,
),
),
);
}<code_end>
The runApp() function takes the given
Widget and makes it the root of the widget tree.
In this example, the widget tree consists of two widgets,
the Center widget and its child, the Text widget.
The framework forces the root widget to cover the screen,
which means the text “Hello, world” ends up centered on screen.
The text direction needs to be specified in this instance;
when the MaterialApp widget is used,
this is taken care of for you, as demonstrated later.When writing an app, you’ll commonly author new widgets that
are subclasses of either StatelessWidget or StatefulWidget,
depending on whether your widget manages any state.
A widget’s main job is to implement a build() function,
which describes the widget in terms of other, lower-level widgets.
The framework builds those widgets in turn until the process
bottoms out in widgets that represent the underlying RenderObject,
which computes and describes the geometry of the widget.<topic_end>
<topic_start>