Thanks for contacting Syncfusion support.
Your requirement to show a content like a toast and to dismiss the toast wherever you touch on the display can be achieved using SfPopupLayout control. In SfPopupLayout you can show the popup view based on your requirement.
Refer the following user guideline to know more about SfPopupLayout.
Please refer the following user guideline to position the popup.
You can animate the popup so that the popup view animates from the bottom, top etc. Please refer the following user guideline to animate the popup.
We have also prepared a sample based on your requirement where the popup view is displayed at the bottom of the screen and it animates from the bottom of the screen. Also, it is not modal and so the popup dismisses if you touch outside of the popup view. You can download the sample from the below link.
Please let us know for further assistance.