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

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