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