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