What does runApp do in Flutter?

The runApp() function takes the given Widget and makes it the root of the widget tree . In this example, the widget tree consists of two widgets, the Center widget and its child, the Text widget. The framework forces the root widget to cover the screen, which means the text “Hello, world” ends up centered on screen.

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Where is the widget position in Flutter?

You can use the GlobalKey to obtain the RenderBox from which you can get the size and offset position information . First, you need to assign a GlobalKey to the widget. If you’ve assigned the GlobalKey to the widget, you can get the currentContext property of the key and call the findRenderObject() method.

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What is a Flutter activity?

Activity which displays a fullscreen Flutter UI . FlutterActivity is the simplest and most direct way to integrate Flutter within an Android app. FlutterActivity responsibilities. FlutterActivity maintains the following responsibilities: Displays an Android launch screen.

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