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Nowadays, almost every application has a dark theme feature, for example, Youtube, WhatsApp, Instagram. Some of them have a toggle button in their app to on/ off the dark theme and others check theme settings in the device and display selected theme. So in this blog let’s check how to implement the dark theme in the flutter.
You may also check our Flutter app development services page.
Now, let’s check how to implement a dark theme and switch themes without using a toggle button.
We are going to build a simple flutter app and use the dark theme, the theme property of MaterialApp for implementing the dark theme.
Step1: Create a simple UI using this code or create your own UI.
Step2: Now create a class and define dark theme and light theme using ThemeData.
Step3: Now use these themes in your MaterialApp and add themeMode.system in themeMode property of MaterialApp widget to check the theme of the device.
Step4: While defining colors in your app use theme properties instead of static color.
Now run your app and change theme settings in your device and again open the app and here is your selected theme. You can also change your theme back to the light theme by doing the same.
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And if we don’t have context available, then what?
Like in the main function:
we don’t have context available here as parameter from main function
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