Remove black background on custom dialog

Question

I want to remove the black background on custom dialog as shown in the picture. I\'m sure the black background was from the dialog, not from app\'s background.

Answer 1

I had the same problem with my custom dialog based on the Alertdialog.Builder, which had a black background showing in the title and the body when i use:

builder.setView(rootView)
  .setTitle(dialog_title)
  .setMessage(dialog_mesg)

solution was 1- Use one of the pre-defines alert dialog builder's themes:

• THEME_DEVICE_DEFAULT_DARK
• THEME_DEVICE_DEFAULT_LIGHT
• THEME_HOLO_DARK
• THEME_HOLO_LIGHT THEME_TRADITIONAL

THEME_DEVICE_DEFAULT_LIGHT worked best for me

2 - set the default dialog button (positive / negative) colors to which ever color you desire like so:

 Button b = mAlertDialog.getButton(AlertDialog.BUTTON_POSITIVE);
 Button d = mAlertDialog.getButton(AlertDialog.BUTTON_NEGATIVE);
 b.setTextColor(ContextCompat.getColor(getActivity(), R.color.primary));
 d.setTextColor(ContextCompat.getColor(getActivity(), R.color.primary));

check the below blog post for more detail and tricks to theming options: http://blog.supenta.com/2014/07/02/how-to-style-alertdialogs-like-a-pro/

tested on Oreo 8.1