How to set the theme for DialogFragment

Question

Can someone please explain why this statement works perfectly well:

setStyle(DialogFragment.STYLE_NO_TITLE, android.R.style.Theme_Holo);

and th

Answer 1

Its probably too late to answer but try using the code in onCreate of the fragment as

@Override
    public void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);

        setStyle(DialogFragment.STYLE_NO_TITLE, R.style.dialog);
    }

Answer 2

Calling the bottomSheetDialogFragment from the activty:

var bottomFragment = ServiceOtpVerficationFragment()
bottomFragment.setStyle(BottomSheetDialogFragment.STYLE_NO_TITLE,R.style.BottomSheetTheme)
bottomFragment.show(supportFragmentManager,"TAG")

Add this in styles.xml
    
    <style name="BottomSheetTheme" parent="Theme.Design.Light.BottomSheetDialog">        <item name="bottomSheetStyle">@style/BottomSheetStyle</item>
    </style>
    <style name="BottomSheetStyle" parent="Widget.Design.BottomSheet.Modal">        
    <item name="android:background">@android:color/transparent</item>

And In the fragment add extension as `BottomSheetDialogFragment()` to fragment class using colon.```

Answer 3

https://stackoverflow.com/a/24375599/2898715 it's also possible to omit the setStyle call altogether, and define the defulat style that DialogFragments will use throughout the whole app.

styles.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="AppTheme" parent="android:Theme.Holo.Light">
        <!-- makes all dialogs in your app use your dialog theme by default -->
        <item name="alertDialogTheme">@style/DialogTheme</item>
        <item name="android:alertDialogTheme">?alertDialogTheme</item>
        <item name="dialogTheme">?alertDialogTheme</item>
        <item name="android:dialogTheme">?alertDialogTheme</item>
    </style>

    <!-- define your dialog theme -->
    <style name="DialogTheme" parent="Theme.AppCompat.DayNight.Dialog.MinWidth">
        <item name="android:buttonStyle">@style/button_green</item>
        <item name="android:textColorHint">@color/green</item>
    </style>

</resources>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
    .....
    <application android:theme="@style/AppTheme">
        .....
    </application>
</manifest>

Answer 4

Try setting a parent theme like

<style name="dialog" parent="@android:style/Theme.Dialog"> Your theme attributes </style>