How do I display a MaterialAlertDialog?

Question

I'm changing my app's theme from AppCompat to MaterialComponents and everything except for the alert dialogues is working. I've already set the app theme to MaterialComponents both in styles and in the manifest.

styles

<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">
    <item name="colorPrimary">@color/grey</item>
    <item name="colorPrimaryDark">@color/black</item>
    <item name="colorAccent">@color/red</item>
    <item name="colorSurface">@color/white</item>
    <item name="colorOnSecondary">@color/white</item>
    <item name="colorSecondary">@color/red</item>
</style>
<style name="AppTheme.AppBarOverlay" parent="ThemeOverlay.MaterialComponents.Dark.ActionBar"/>
<style name="AppTheme.PopupOverlay" parent="ThemeOverlay.MaterialComponents.Light"/>

build.gradle

implementation 'com.google.android.material:material:1.1.0'

AndroidManifest

<application
    android:allowBackup="true"
    android:fullBackupContent="false"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:supportsRtl="true"
    android:theme="@style/AppTheme"
    tools:ignore="GoogleAppIndexingWarning">

This is the code I'm trying to display my dialogue with:

MaterialAlertDialogBuilder(context)
            .setTitle(R.string.tip_title)
            .setMessage(R.string.tip)
            .setNeutralButton(R.string.ok, null)
            .setPositiveButton(R.string.do_not_show_again) { _, _ ->
                preferencesHelper.disableTip()
            }.show()

And finally, the error I'm getting is

java.lang.IllegalArgumentException: The style on this component requires your app theme to be Theme.AppCompat (or a descendant).

How can I fix this error?

Answer 1

The function that displayed the dialogue was taking Context as its input parameter, which in turn was the application context injected to the class where the function is.

I managed to fix the issue by changing the input parameter type in the function to Activity, which is a way to enforce the right theme.