java - Should I care about the difference between main thread and UI thread in Lollipop and beyond? -

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before lollipop, life easy. had main thread - called ui thread - in gui stuff done (and avoided under circumstances long-running operations avoid kind of hiccup), , had background threads did long-running stuff.

now in lollipop , later versions of android, iirc term ui thread seems point user new renderthread, thread example used animate ripples, hero elements between activities or other kind of animation needs happen while main thread processes input events or busy creating new stuff in background.

with android studio 1.3 3 thread types got own annotation, denote particular piece of code should run on particular thread. me question is: should app developer care run anything on uithread, i.e. renderthread, , such ever use @uithread in application?

i remember on chet haase's presentation of renderthread last year's google io. statement was, in first place have continue mainthread before. renderthread used animations only. instance, if have method ondrawframe() drawing animation @ smooth 60 fps, should rather call in renderthread, because mainthread can slowed down application logic or other stuff.

back question. use mainthread before. if experience performance issues animations, try move drawing parts of code rendererthread.


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