如何确定屏幕高度和宽度

问题描述

我在 Flutter 上创建了一个新应用程序，但在不同设备之间切换时遇到了屏幕尺寸问题.

I've created a new application on flutter, and I've had problems with the screen sizes when switching between different devices.

我使用 Pixel 2XL 屏幕尺寸创建了应用程序，并且因为我有一个带有 ListView 子元素的容器，它要求我包含容器的高度和宽度.

I created the application using the Pixel 2XL screen size, and because I've had containers with a child of ListView it's asked me to include a height and width for the container.

因此，当我将设备切换到新设备时，容器太长并引发错误.

So when I switch the device to a new device the container is too long and throws an error.

我如何才能使应用程序针对所有屏幕进行优化?

How can I go about making it so the application is optimized for all screens?

推荐答案

您可以使用:

• double width = MediaQuery.of(context).size.width;
• double height = MediaQuery.of(context).size.height;

要获得 SafeArea 的高度(适用于 iOS 11 及更高版本):

To get height just of SafeArea (for iOS 11 and above):

• var padding = MediaQuery.of(context).padding;
• double newheight = height - padding.top - padding.bottom;

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