I/flutter (25517): To introduce a Material widget, you can either directly include one, or use a widget that contains I/flutter (25517): Material itself, such as a Card, Dialog, Drawer, or Scaffold. They help us to know which pages are the most and least popular and see how visitors move around the site. Add a drawer. Navigation Drawer using Flutter. See also: showBottomSheet, which displays a bottom sheet as a route that can be dismissed with the scaffold's back button. On mobile it shows a list and pushes to details and on tablet it shows the List and the selected item. This I / flutter (20636): usually happens when the context provided is from the same StatefulWidget as that whose build I / flutter (20636): function actually creates the Scaffold widget … 1. of (). I / flutter (20636): No Scaffold ancestor could be found starting from the context that was passed to Scaffold. To add a drawer to the app, wrap it in a Scaffold widget. In Flutter's I/flutter (11947): material library, that material is represented by the Material widget. I/flutter (11947): In material design, most widgets are conceptually "printed" on a sheet of material. 将 RaisedButton 单独用一个 class 封装一 … I/flutter (11947): IconButton widgets require a Material widget ancestor. No Scaffold widget found. This usually happens when the context provided is from the same StatefulWidget as that whose build function actually creates the Scaffold widget being sought. Typically, the ScaffoldMessenger widget is introduced by the MaterialApp at the top of your application widget … It's unlikely to actually be a BottomSheet, which is used by the implementations of showBottomSheet and showModalBottomSheet. I/flutter (25517): The specific widget that could not find a Material ancestor was: 重点是：“ No Material widget found… Close the drawer programmatically. Scaffold widgets require a ScaffoldMessenger widget ancestor. There are currently 3 users online. Scaffold.of() called with a context that does not contain a Scaffold. View the online demo here!. appBar: AppBar( Add a Drawer to a screen. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance. Before going to use this first check the default Snackbar. Responsive Scaffold - On mobile it shows a list and pushes to details and on tablet it shows the List and the selected item. No ScaffoldMessenger widget found. E/flutter (17371): No Scaffold ancestor could be found starting from the context that was passed to Scaffold.of(). responsive_scaffold #. Create a Scaffold. No Scaffold ancestor could be found starting from the context that was passed to Scaffold.of(). This usually happens when the context provided is from the same StatefulWidget as that whose build function actually creates the Scaffold widget being sought. 4. 6.2 解决方案. 3. Most users ever online was 147 at 15:44 on 03-10-2018. I/flutter (11947): No Material widget found. 0 members and 3 guests.. Populate the drawer with items. Flutter provided a widget called Snackbar widget, which is used to show Quick information/messages to users on the current screen. Typically it's a widget that includes Material. In this post we cover 1) How to fix Scaffold.of() called with a context that does not contain a Scaffoldshow exception 2) Show snackbar with flushbar plugin. Typically, the Scaffold widget is introduced by the MaterialApp or WidgetsApp widget at the top of your application widget tree. The Scaffold widget provides a consistent visual structure to apps 2. All information these cookies collect is aggregated and therefore anonymous. The value of bottomSheet can be any widget at all.