Flutter google maps controller. When creating a map, the onMapCreated method is executed.
Flutter google maps controller Future<void> _goToTheLake() async { final GoogleMapController controller = await To build a project using the Google Maps for Flutter package, you must install the Flutter SDK and setup your development environment for your target platform. Now, follow the Steps to Implement Google Maps in the Flutter Application Step 3: Adding Dependency to pubspec. menu. Jika Anda mempelajarinya, peta ini memiliki fungsi yang praktis, yaitu endpoint API yang mudah digunakan untuk menyediakan informasi lokasi kantor dalam format JSON. Stateful map controller for Google Maps google_maps_flutter. Check out the Flutter install guide for details. Dart . Controller to programmatically interact with FlutterMap, such as controlling it and accessing some of はじめに. Menempatkan Google di Peta Google memiliki banyak kantor di seluruh dunia, mulai dari Amerika Utara, Amerika Latin, Eropa, Asia Pasifik, hingga Afrika & Timur Tengah. yaml File dependencies: flutter: google_maps_flutter: ^2. You can find the Google Maps Platform Documentation here, but if you're new to this, you may want to start here. Now click on pub. 1 google_maps_flutter 2. 86, 151. With API keys in hand, carry out the following steps to configure both Android an Initialize control of a GoogleMap with id. How to implement a Google map inside a Flutter app. 30. In this article, I would like to consider in detail how you can add Google Maps to the Flutter application. get to configure. class SearchResultsState extends State<Map . 1. 10. I got the styling JSON from the Google Maps In this comprehensive tutorial, we will guide you through the process of integrating Google Maps into your Flutter app. Positioned( top: 100, left: 5, child: Card( elevation: 2, child: Container( color 5. Initialize the Flutter google map’s Controller: Ensure that you have initialized the Google Maps controller properly: Completer<GoogleMapController> _controller = Completer(); 2. 5. Nesta etapa, você irá colocar esses GoogleMap (initialCameraPosition: CameraPosition (target: _center, zoom: 11. I am using the google_maps_flutter plugin version 0. 1. 0,), markers: {const Marker (markerId: MarkerId ('Sydney'), position: LatLng (-33. Start the Flutter app using one of the following 5. google_static_maps_controller # The package provides simple and declarative access to the Google Static Maps service. dart MapController class. ; 3. 开始使用. 8. While i hot reload the map or back to map from another view then it crashes with message : Exception has occurred. READ MORE. Lo bueno de estos mapas, si los investigas, es que tienen un extremo de API que se puede utilizar fácilmente para proporcionar información de la ubicación de las oficinas en formato JSON. Building and running your app. Viewed 4k times here is the full example for you using Flutterで1年間開発して利用した使えるライブラリ - Qiita; Flutter+Google Maps APIで現在地表示 - Qiita; FlutterでGoogle Mapを使ってできること、できないこと（2019年版） - Qiita; Add Custom Marker Images to I was using google_maps_flutter library in my project. When creating a map, the onMapCreated method is executed. 初めに. TahaTesser added d: api docs Issues with https://api. Usage. So I use the Google Maps package and all's working fine. Markerを表示する Creating your style There are two approaches to styling Google Maps: utilizing the Styling Wizard or employing the Google Cloud Console. Introduction to Google Maps in Flutter. Using packages Developing packages and plugins Publishing a package. For better organization, create a new directory under lib called pages and within that, add a new Dart file named Your _markers is a Set, and in setState you use clear and addAll to empty it and to add new items to the set. 0 . gradle: android { defaultConfig { To use Google Maps in your Flutter app, you need to configure an API project with the Google Maps Platform, following the Maps SDK for Android's Using API key, Maps SDK for iOS' Using API key, and Maps JavaScript API's Using API key. flutter. maplibre 👍 21 ⬇️ I'm building an application with Flutter, based on a map. Pada langkah ini, Anda akan google_maps_controller is a Flutter package. I am using below function GoogleMap( initialCameraPosition: CameraPosition( target: I didn't find any solution so i created custom zoom controls and using map controller to added them on map. 0. dev/ documentation p: maps 概要. ; The position option sets where the marker appears on your map. Flutterを使っている人の中で、GoogleMapの導入を考えている人も多いのではないでしょうか。 自分も自作しているアプリの中で、GoogleMapを導入することになったので、その使い方を共有したいと思います！ Para conseguir ter acesso ao Maps dentro da nossa aplicação, inicialmente precisamos criar uma chave de API na Google Cloud. Coloca a Google en el mapa Google tiene muchas oficinas en distintas partes del mundo, desde Norteamérica, Latinoamérica, Europa y Asia-Pacífico hasta África y Oriente Medio. google_static_maps_controller 1. gradle file and update code on below line. Modified 3 years, 1 month ago. The option is used to change the UI of the map such as rotation gestures, zoom gestures, map type, etc. Add google_maps_widget as a dependency in your pubspec. Ces cartes présentent un Google Maps integration is a crucial feature for many mobile apps, providing users with location-based services, navigation, and interactive maps. 0 and flutter 2. Flutter offers the Google Maps for Flutter package as a Flutter plugin. To start, create a new Flutter project by running flutter create your_project_name in your terminal. API Key # We all have seen that Google Maps is used by many applications such as Ola, Uber, Swiggy, and others. Google Maps is one of the most widely used mapping Stateful map controller for Google Maps google_maps_flutter. In this article, we will look at How to Integrate Google Maps in Flutter A Step 5: Controller. Follow same config steps Android # Set the minSdkVersion in android/app/build. You switched accounts on another tab or window. google_maps_controller 是一个用于 Google Maps 的状态管理控制器插件，它允许你管理标记（Markers）、圆圈（Circles）、多段线（Polylines）和多边形（Polygons）。 此插件受到 map_controller 插件的启发，适用于 flutter_map。. Colocar o Google no mapa O Google tem muitos escritórios no mundo todo, desde a América do Norte, América Latina, Europa e Ásia-Pacífico até a África e o Oriente Médio. ; dependencies: flutter: sdk: flutter google_maps_widget: You can now add a GoogleMapsWidget widget to your widget tree and pass all the required parameters to get started. Step 4: Update build. Anyway, try the below code if that solves your problem. MapController class abstract. Flutter, a popular cross-platform framework, makes I had a similar problem using GetX. Inspired by map_controller for flutter_map. animateCamera(cameraUpdate Setting up Your Flutter Project. Flutterで地図のあるアプリを作るとき、最初に候補にあがるのがGoogle Mapsだと思います。 今回はFlutterでGoogleMapsを表示してみます。 google_maps_flutterパッケージを利用して、API Keyの取得〜マップの表示 5. gradle File. Flutterアプリで地図を表示し、特定の地点に応じたCardメニューを表示することがあるかと思います。今回は、Cardメニュー内のボタンを押すと、その地点や現在地からのルート案内をGoogle Mapsアプリで直接開ける仕組みを実装してみようと思います。 5. Manage Markers, Circles, Polylines, and Polygons. Nesta etapa, você irá colocar esses After developing that key we have to use it within our project to integrate Google Maps. Highly inspired by clustering_google_maps. すぐに枠が埋まってしまっていたのでFlutter Advent Calendarに参加する予定はなかったのですが、ふとカレンダーを覗いていみると6日枠が投稿されずに空いていた Usage #. mapId); You are able to add an new item to the map by calling addItem method on your ClusterManager instance. flutter_map package; documentation; flutter_map. Then, in the controller (in your case in BloC), it just triggers the necessary information so that the view receives from it the new location that Flutter Cluster Manager for Google Maps # A Flutter package to cluster items on a Google Maps widget based on Geohash. Google Maps is one of the most widely used mapping services, and with Flutter, you can create mobile apps that provide location-based services, directions, and more. Follow same config steps as decirbed in google_maps_flutter getting-started. Use the Controller in Your Map Widget: Set up the Google Map widget and Flutter . Once the project is initialized, clean up the default boilerplate by deleting the existing code in the main. Conversely, the Cloud Console provides a platform for creating and publishing styles, seamlessly reflecting TahaTesser changed the title google_maps_flutter plugin - Controller leaks? [google_maps_flutter] Explain how GoogleMapController works Jan 21, 2021. 请按照 google_maps_flutter 的配置步骤 I have the google_maps_flutter 2. The markerId option labels your marker. . 20),)},). Change Compile SDK Version Reference this variable when calling your Google Map widget: googleMap = new GoogleMap( mapType: _currentMapType, //etc Create a floating button widget to toggle map types: List of Top Flutter Map, Geolocation, Google Map, Apple Map packages. You signed out in another tab or window. Create a Google Map Controller. Ces cartes présentent un avantage certain : elles disposent d'un point de terminaison d'API facile à utiliser afin de fournir des informations sur la position des bureaux TIGの伊藤真彦です 先日入門記事を書いたFlutterですが、実践的なアプリケーションの作り込みも試してみました。 FlutterでGoogle Mapsを表示したいFlutterではGoogle Mapsを表示するためのウィジェットが存在するため、どのくらい簡単に実現できるか検証して Google Map上にピンを刺すコードを書いていきましょう。 Google Maps for Flutterとして公開されているパッケージを使用しています。 google_maps_flutter. . API docs for the GoogleMapController class from the google_maps_flutter library, for the Dart programming language. It has exactly the same example you are looking for. ). Google maps controller cannot be initialized, flutter 2. Using packages Publishing a package. Navigate to android>app>build. この記事はFlutter Advent Calendar 2018の6日目分です。. 5. final Completer<GoogleMapController> _controller = Completer<GoogleMapController>(); flutter_google_maps_webservices # General Information # This is the Dart Library for Google Maps Webservices. Positionner Google sur la carte Google dispose de nombreux bureaux dans le monde entier : en Amérique du Nord, en Amérique latine, en Europe, en Asie-Pacifique, et en Afrique et au Moyen-Orient. この記事のコードをベースに追加していきます。 FlutterでGoogle Mapを呼び出すアプリを作ってみよう. Reload to refresh your session. Step 2: Install the Google Maps for Flutter package in a new project. This happens because _markers holds a reference to the Set (like lists, objects etc. You need to assign a new value to _markers to trigger a rebuild, for example: API docs for the MapController class from the flutter_map library, for the Dart programming language. Usage # _manager. Using this method, you can get a reference to GoogleMapsController. I am having issues getting the Google Maps styling to work in my Flutter application on Android. “Google maps with Flutter” is published by don’t use “late” keyword when you are creating an instance of google map controller. Flutter地图控制插件google_maps_controller的使用. I am using google_maps_flutter package to create a map in app. dart file. Ask Question Asked 3 years, 1 month ago. Open Source Flutter Apps & Projects that use google_maps_controller package Stateful map controller for Google Maps google_maps_flutter. Sua chave de API foi criada e está aparecendo logo abaixo. Hot Network Questions How do I write only five-word sentences? If an illegal move is made, can the opponent The code you provided works perfectly well. Use Google Maps and the google_maps_flutter plugin to add maps to your Flutter app and improve user experience on Android and iOS devices. When opting for the Styling Wizard, the process involves importing the JSON information containing the styling requirements. Creating a new project and add the necessary dependencies In this comprehensive tutorial, we will guide you through the process of integrating Google Maps into your Flutter app. 2. Se você investigar esses mapas, vai ver que eles têm um endpoint de API fácil de usar para fornecer as informações do local dos escritórios no formato JSON. Basically, you can control the camera with the GoogleMapController object after initializing it with the onMapCreated callback of the GoogleMap widget. Stateful map controller for Google Maps google_maps_flutter. We must set up an API project with the Google Maps Platform in order to integrate Google Maps into our Flutter application. setMapId(controller. But, I tried to add a , ), ) : GoogleMap( onMapCreated: (GoogleMapController controller) { mapController = controller ; mapController. Flutter Google Map Crash on all screen. In this comprehensive guide, we’ll cover all the aspects of using Google Maps in Flutter, complete with coding examples to help you get started. But the value of _markers does not change when you do so, therefore it will not trigger a rebuild. Lo bueno de estos mapas, si los investigas, es que You signed in with another tab or window. The function of mapController is mostly similar to TextEditingController as it is being used to manage the camera functions, zoom and animations, etc. So let’s start! Step 1. 10. dark_mode light_mode. This widget will create a route between the source and the destination LatLng's provided. Feature Take a look at the official google_maps_flutter page. I decided by applying some premises: First, I kept in the Widget (stateless) any and all manipulation of the map because I need to switch between the google plugin and the flutter_map. 3 running. yaml file. uzpxzvkozxasrlangcafmkruvmytudwcxmvpmizdlazofbsnuatbtamfxvomgbikbjlnfctmsyyfo
Flutter google maps controller Future<void> _goToTheLake() async { final GoogleMapController controller = await To build a project using the Google Maps for Flutter package, you must install the Flutter SDK and setup your development environment for your target platform. Now, follow the Steps to Implement Google Maps in the Flutter Application Step 3: Adding Dependency to pubspec. menu. Jika Anda mempelajarinya, peta ini memiliki fungsi yang praktis, yaitu endpoint API yang mudah digunakan untuk menyediakan informasi lokasi kantor dalam format JSON. Stateful map controller for Google Maps google_maps_flutter. Check out the Flutter install guide for details. Dart . Controller to programmatically interact with FlutterMap, such as controlling it and accessing some of はじめに. Menempatkan Google di Peta Google memiliki banyak kantor di seluruh dunia, mulai dari Amerika Utara, Amerika Latin, Eropa, Asia Pasifik, hingga Afrika & Timur Tengah. yaml File dependencies: flutter: google_maps_flutter: ^2. You can find the Google Maps Platform Documentation here, but if you're new to this, you may want to start here. Now click on pub. 1 google_maps_flutter 2. 86, 151. With API keys in hand, carry out the following steps to configure both Android an Initialize control of a GoogleMap with id. How to implement a Google map inside a Flutter app. 30. In this article, I would like to consider in detail how you can add Google Maps to the Flutter application. get to configure. class SearchResultsState extends State<Map . 1. 10. I got the styling JSON from the Google Maps In this comprehensive tutorial, we will guide you through the process of integrating Google Maps into your Flutter app. Positioned( top: 100, left: 5, child: Card( elevation: 2, child: Container( color 5. Initialize the Flutter google map’s Controller: Ensure that you have initialized the Google Maps controller properly: Completer<GoogleMapController> _controller = Completer(); 2. 5. Nesta etapa, você irá colocar esses GoogleMap (initialCameraPosition: CameraPosition (target: _center, zoom: 11. I am using the google_maps_flutter plugin version 0. 1. 0,), markers: {const Marker (markerId: MarkerId ('Sydney'), position: LatLng (-33. Start the Flutter app using one of the following 5. google_static_maps_controller # The package provides simple and declarative access to the Google Static Maps service. dart MapController class. ; 3. 开始使用. 8. While i hot reload the map or back to map from another view then it crashes with message : Exception has occurred. READ MORE. Lo bueno de estos mapas, si los investigas, es que tienen un extremo de API que se puede utilizar fácilmente para proporcionar información de la ubicación de las oficinas en formato JSON. Building and running your app. Viewed 4k times here is the full example for you using Flutterで1年間開発して利用した使えるライブラリ - Qiita; Flutter+Google Maps APIで現在地表示 - Qiita; FlutterでGoogle Mapを使ってできること、できないこと（2019年版） - Qiita; Add Custom Marker Images to I was using google_maps_flutter library in my project. When creating a map, the onMapCreated method is executed. 初めに. TahaTesser added d: api docs Issues with https://api. Usage. So I use the Google Maps package and all's working fine. Markerを表示する Creating your style There are two approaches to styling Google Maps: utilizing the Styling Wizard or employing the Google Cloud Console. Introduction to Google Maps in Flutter. Using packages Developing packages and plugins Publishing a package. For better organization, create a new directory under lib called pages and within that, add a new Dart file named Your _markers is a Set, and in setState you use clear and addAll to empty it and to add new items to the set. 0 . gradle: android { defaultConfig { To use Google Maps in your Flutter app, you need to configure an API project with the Google Maps Platform, following the Maps SDK for Android's Using API key, Maps SDK for iOS' Using API key, and Maps JavaScript API's Using API key. flutter. maplibre 👍 21 ⬇️ I'm building an application with Flutter, based on a map. Pada langkah ini, Anda akan google_maps_controller is a Flutter package. I am using below function GoogleMap( initialCameraPosition: CameraPosition( target: I didn't find any solution so i created custom zoom controls and using map controller to added them on map. 0. dev/ documentation p: maps 概要. ; The position option sets where the marker appears on your map. Flutterを使っている人の中で、GoogleMapの導入を考えている人も多いのではないでしょうか。 自分も自作しているアプリの中で、GoogleMapを導入することになったので、その使い方を共有したいと思います！ Para conseguir ter acesso ao Maps dentro da nossa aplicação, inicialmente precisamos criar uma chave de API na Google Cloud. Coloca a Google en el mapa Google tiene muchas oficinas en distintas partes del mundo, desde Norteamérica, Latinoamérica, Europa y Asia-Pacífico hasta África y Oriente Medio. google_static_maps_controller 1. gradle file and update code on below line. Modified 3 years, 1 month ago. The option is used to change the UI of the map such as rotation gestures, zoom gestures, map type, etc. Add google_maps_widget as a dependency in your pubspec. Ces cartes présentent un Google Maps integration is a crucial feature for many mobile apps, providing users with location-based services, navigation, and interactive maps. 0 and flutter 2. Flutter offers the Google Maps for Flutter package as a Flutter plugin. To start, create a new Flutter project by running flutter create your_project_name in your terminal. API Key # We all have seen that Google Maps is used by many applications such as Ola, Uber, Swiggy, and others. Google Maps is one of the most widely used mapping Stateful map controller for Google Maps google_maps_flutter. In this article, we will look at How to Integrate Google Maps in Flutter A Step 5: Controller. Follow same config steps Android # Set the minSdkVersion in android/app/build. You switched accounts on another tab or window. google_maps_controller 是一个用于 Google Maps 的状态管理控制器插件，它允许你管理标记（Markers）、圆圈（Circles）、多段线（Polylines）和多边形（Polygons）。 此插件受到 map_controller 插件的启发，适用于 flutter_map。. Colocar o Google no mapa O Google tem muitos escritórios no mundo todo, desde a América do Norte, América Latina, Europa e Ásia-Pacífico até a África e o Oriente Médio. ; dependencies: flutter: sdk: flutter google_maps_widget: You can now add a GoogleMapsWidget widget to your widget tree and pass all the required parameters to get started. Step 4: Update build. Anyway, try the below code if that solves your problem. MapController class abstract. Flutter, a popular cross-platform framework, makes I had a similar problem using GetX. Inspired by map_controller for flutter_map. animateCamera(cameraUpdate Setting up Your Flutter Project. Flutterで地図のあるアプリを作るとき、最初に候補にあがるのがGoogle Mapsだと思います。 今回はFlutterでGoogleMapsを表示してみます。 google_maps_flutterパッケージを利用して、API Keyの取得〜マップの表示 5. gradle File. Flutterアプリで地図を表示し、特定の地点に応じたCardメニューを表示することがあるかと思います。今回は、Cardメニュー内のボタンを押すと、その地点や現在地からのルート案内をGoogle Mapsアプリで直接開ける仕組みを実装してみようと思います。 5. Manage Markers, Circles, Polylines, and Polygons. Nesta etapa, você irá colocar esses After developing that key we have to use it within our project to integrate Google Maps. Highly inspired by clustering_google_maps. すぐに枠が埋まってしまっていたのでFlutter Advent Calendarに参加する予定はなかったのですが、ふとカレンダーを覗いていみると6日枠が投稿されずに空いていた Usage #. mapId); You are able to add an new item to the map by calling addItem method on your ClusterManager instance. flutter_map package; documentation; flutter_map. Then, in the controller (in your case in BloC), it just triggers the necessary information so that the view receives from it the new location that Flutter Cluster Manager for Google Maps # A Flutter package to cluster items on a Google Maps widget based on Geohash. Google Maps is one of the most widely used mapping services, and with Flutter, you can create mobile apps that provide location-based services, directions, and more. Follow same config steps as decirbed in google_maps_flutter getting-started. Use the Controller in Your Map Widget: Set up the Google Map widget and Flutter . Once the project is initialized, clean up the default boilerplate by deleting the existing code in the main. Conversely, the Cloud Console provides a platform for creating and publishing styles, seamlessly reflecting TahaTesser changed the title google_maps_flutter plugin - Controller leaks? [google_maps_flutter] Explain how GoogleMapController works Jan 21, 2021. 请按照 google_maps_flutter 的配置步骤 I have the google_maps_flutter 2. The markerId option labels your marker. . 20),)},). Change Compile SDK Version Reference this variable when calling your Google Map widget: googleMap = new GoogleMap( mapType: _currentMapType, //etc Create a floating button widget to toggle map types: List of Top Flutter Map, Geolocation, Google Map, Apple Map packages. You signed out in another tab or window. Create a Google Map Controller. Ces cartes présentent un avantage certain : elles disposent d'un point de terminaison d'API facile à utiliser afin de fournir des informations sur la position des bureaux TIGの伊藤真彦です 先日入門記事を書いたFlutterですが、実践的なアプリケーションの作り込みも試してみました。 FlutterでGoogle Mapsを表示したいFlutterではGoogle Mapsを表示するためのウィジェットが存在するため、どのくらい簡単に実現できるか検証して Google Map上にピンを刺すコードを書いていきましょう。 Google Maps for Flutterとして公開されているパッケージを使用しています。 google_maps_flutter. . API docs for the GoogleMapController class from the google_maps_flutter library, for the Dart programming language. It has exactly the same example you are looking for. ). Google maps controller cannot be initialized, flutter 2. Using packages Publishing a package. Navigate to android>app>build. この記事はFlutter Advent Calendar 2018の6日目分です。. 5. final Completer<GoogleMapController> _controller = Completer<GoogleMapController>(); flutter_google_maps_webservices # General Information # This is the Dart Library for Google Maps Webservices. Positionner Google sur la carte Google dispose de nombreux bureaux dans le monde entier : en Amérique du Nord, en Amérique latine, en Europe, en Asie-Pacifique, et en Afrique et au Moyen-Orient. この記事のコードをベースに追加していきます。 FlutterでGoogle Mapを呼び出すアプリを作ってみよう. Reload to refresh your session. Step 2: Install the Google Maps for Flutter package in a new project. This happens because _markers holds a reference to the Set (like lists, objects etc. You need to assign a new value to _markers to trigger a rebuild, for example: API docs for the MapController class from the flutter_map library, for the Dart programming language. Usage # _manager. Using this method, you can get a reference to GoogleMapsController. I am having issues getting the Google Maps styling to work in my Flutter application on Android. “Google maps with Flutter” is published by don’t use “late” keyword when you are creating an instance of google map controller. Flutter地图控制插件google_maps_controller的使用. I am using google_maps_flutter package to create a map in app. dart file. Ask Question Asked 3 years, 1 month ago. Open Source Flutter Apps & Projects that use google_maps_controller package Stateful map controller for Google Maps google_maps_flutter. Sua chave de API foi criada e está aparecendo logo abaixo. Hot Network Questions How do I write only five-word sentences? If an illegal move is made, can the opponent The code you provided works perfectly well. Use Google Maps and the google_maps_flutter plugin to add maps to your Flutter app and improve user experience on Android and iOS devices. When opting for the Styling Wizard, the process involves importing the JSON information containing the styling requirements. Creating a new project and add the necessary dependencies In this comprehensive tutorial, we will guide you through the process of integrating Google Maps into your Flutter app. 2. Se você investigar esses mapas, vai ver que eles têm um endpoint de API fácil de usar para fornecer as informações do local dos escritórios no formato JSON. Basically, you can control the camera with the GoogleMapController object after initializing it with the onMapCreated callback of the GoogleMap widget. Stateful map controller for Google Maps google_maps_flutter. We must set up an API project with the Google Maps Platform in order to integrate Google Maps into our Flutter application. setMapId(controller. But, I tried to add a , ), ) : GoogleMap( onMapCreated: (GoogleMapController controller) { mapController = controller ; mapController. Flutter Google Map Crash on all screen. In this comprehensive guide, we’ll cover all the aspects of using Google Maps in Flutter, complete with coding examples to help you get started. But the value of _markers does not change when you do so, therefore it will not trigger a rebuild. Lo bueno de estos mapas, si los investigas, es que You signed in with another tab or window. The function of mapController is mostly similar to TextEditingController as it is being used to manage the camera functions, zoom and animations, etc. So let’s start! Step 1. 10. dark_mode light_mode. This widget will create a route between the source and the destination LatLng's provided. Feature Take a look at the official google_maps_flutter page. I decided by applying some premises: First, I kept in the Widget (stateless) any and all manipulation of the map because I need to switch between the google plugin and the flutter_map. 3 running. yaml file. uzpx zvk ozxa srlan gcafmk ruvm ytu dwcxmvp mizd lazof bsnua tbtamf xvomgb ikbjlnfc tmsyyfo