I would like to use this effect:
It's a circle focusing the user on a special part of the application.
It also has a pulsaring white smaller circle.
Is there a Standard Android effect out there? I've already seen such a thing somewhere else. Anyhow, I would appreciate it to get some code on how to achieve this effect.
Yes, you can achieve this effect by using third-party android libraries. One of them is FancyShowCaseView.
It uses Circular reveal animation and you can easily use it in an AndroidX project by adding the following:
implementation 'me.toptas.fancyshowcase:fancyshowcaseview:1.2.1'
If the project doesn't incorporate AndroidX, then use:
implementation 'me.toptas.fancyshowcase:fancyshowcaseview:1.1.5'
A sample usage has been provided in their github repo. Please follow the link associated with the library name. Hope this helps.
Another one is TapTargetView. This suits more to your required effect I assume. Please have a look here in the following at the end of this gif of the search button:
It's called Feature Discovery. Not sure that there are any standard Android effects for that but there are tons of libs on android arsenal