Android Alert Dialog with extra background

Question

I recently migrated my app to Material Design and I stumbled upon this problem with my Alert Dialogs:

Answer 1

Add below styles . You have to customise background also.

    @null
    @android:color/transparent
    true
    @null
    @null
    @android:style/Animation.Dialog
    false
    @android:color/transparent

Using below also works

@android:color/transparent
@android:color/transparent

Also You can set in your code by using

dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));

and this should be before setContentView

dialog.setContentView(R.layout.dialog);