android - Custom rendering for text with special syntax -

i have text gathered api , consists of custom syntax. display using textview need render special part of text , convert text elements. example of text below.

oh, that's great idea! check (user: someuser)'s answer this. can @ (ref: forum post title) or:  (ref: forum post)  hint you! (hint: should displayed mini icon when clicked, tooltip should opened)  here spoiler you.  ---- spoiler ---- spoiler. text should not displayed directly should converted button element. when button clicked, text should shown ---- spoiler ---- 

so, need convert (user: someuser) link in view shown "someuser" when clicked, open new intent. (ref: topic) keyword, it's same. when hit spoiler, want make nice button indicating it's spoiler , when user clicks, expand.

how can parse text , show correctly in view? don't have problem parsing problem displaying elements in view.

methods tried

i tried webview instead of textview thinking can convert html/js performance terrible. although use recycleview , viewholder, webview overkill. need use kind of textview elements have.

i looked @ custom html tag handling textview (thinking can convert legacy tags html) failed see how can insert button spoiler tag or insert custom elements tooltip hint.

thank you!