UPDATE
- I have separated custom list picker and choice picker dialogs into separate extensions as it is creating confusion between properties of each dialogs.
- Added negative button in Custom list picker dialog and related properties like negative button text and text color.
- Added PreSelectedChoices property in Choice Picker dialog to set choices that will be pre selected when showing the dialog.
- Removed remember choices property as it is not working properly.
I have edited the 1st post and explained about its uses.