android - CardView animation issue: no initial animation -

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there 2 cardviews in recyclerview in framelayout. 1 cardview has android:visibility="gone" setting on it. when tapped, card flips 360 degrees, revealing 'gone' cardview. tapping again flips it, showing initial card. sounds simple now.

used objectanimator class this, so: 

public static void flipview(view viewtoflip, int direction) {     objectanimator flipanimator;      if (direction == clockwise)     {         flipanimator = objectanimator.offloat(viewtoflip, "rotationy", 0f, 360f);         flipanimator.setduration(3500);         flipanimator.start();     }     else     {         flipanimator = objectanimator.offloat(viewtoflip, "rotationy", 360f, 0f);         flipanimator.setduration(3500);         flipanimator.start();     } }

the issue when cardview shows initially, animation does not work, in there no flip. card gets replaced 'gone' card sans animation. on subsequent taps, animation works beautifully. questions are:

  • why animation not work word go? (in title of question, 'initial' means 'on first tap on cardview' when shows in fragment)
  • what fix?

please let me know if need examine more code.

thank expert advice!


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