Wrong button style when creating AlertDialog with androidx DialogFragment

问题

Here is my root style:

<style name="AppTheme" parent="Theme.MaterialComponents.Light.NoActionBar">

And here is how I create dialog:

override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {

        return AlertDialog.Builder(requireActivity())
            .apply {

                setMessage(R.string.dialog_delete_service_message)
                setPositiveButton(
                    R.string.dialog_delete_service_positive_button
                ) { _, _ ->
                    listener?.onConfirmed()
                }
                setNegativeButton(R.string.dialog_delete_service_negative_button, null)

            }.create()
    }

Fragment is subclass of androidx.fragment.app.DialogFragment.

Here is how dialog is shown:

I want to show borderless buttons but dialog buttons are bordered. Is any style missing?

回答1:

Use the MaterialAlertDialogBuilder

new MaterialAlertDialogBuilder(context)
            .setTitle("xxxx")
            .setMessage("...")
            .setPositiveButton("..", null)
            .show();

and use this style in your app theme:

 <!-- Base application theme. -->
 <style name="AppTheme" parent="Theme.MaterialComponents.Light">
    ...
    <item name="materialAlertDialogTheme">@style/ThemeOverlay.MaterialComponents.MaterialAlertDialog</item>
 </style>

来源：https://stackoverflow.com/questions/57654013/wrong-button-style-when-creating-alertdialog-with-androidx-dialogfragment