in .net anroid there is "The style on this component requires your app theme to be Theme.AppCompat"?

Question

1. create simple empty Android Application
2. add the code var view=new NavigationRailView(this);setContentView(view);
3. run it
4. you will get the error: the style on this component requires your app theme to be Theme.AppCompat

how to add the view?

Answer 1

Hello,

The style on this component requires your app theme to be Theme.AppCompat

NavigationRailView is a kind of Material control. The Material control is used in the xml layout, so the android:theme style of the Application or activity must be Theme.AppCompat or its sub-styles.

Solution:

Apply the theme in your Android project, or you could implement your own theme as follows:

<style name="MyTheme" parent="@android:style/Theme.Material.Light.NoActionBar">
 ... <!--Add the colors of the following three names (the color value is arbitrary), and the style of MyTheme satisfies Theme.AppCompa, and you could solve the above problem--> 
    <item name="colorPrimary">#ffff00</item>
    <item name="colorPrimaryDark">#ff00ff</item> 
    <item name="colorAccent">#ff0000</item> 
</style>

After that you need to add the style to the AndroidManifest.xml.

As a complement, NavigationRailView often needs to be used in combination with other components, so it is not recommended to create objects directly in C#. Please refer to NavigationRailView for more details.

Best Regards,

Alec Liu.

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