DialogFragment占据整个屏幕宽度

Question

in my android app I'm using DialogFragment extending class to show custom dialogs, but I have a problem all created dialogs take whole screen width (example in photo), I would prefer it come with margin, how to do it?

my dialog

Answer 1

one way is to use style for it. You could create your custom style, like

<style name="AlertDialogStyle" parent="Theme.AppCompat.Light.Dialog.Alert">
    <!-- Used for the buttons -->
    <item name="colorAccent">@color/black</item>
    <item name="android:textColorPrimary">@color/black</item>
    <item name="android:windowMinWidthMajor">80%</item>
    <item name="android:windowMinWidthMinor">80%</item>
    <!-- Used for the background -->
    <item name="android:windowBackground">@color/white</item>
</style> 

and onCreate of your DialogFragment subclass you can provide it as parameter

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setStyle(STYLE_NORMAL, R.style.AlertDialogStyle)

you can find a description of the key items in the style here