Android ViewPager Transition

here is a nice gif of what happened in the flicker app at the bottom of this site Great animations with PageTransformer

here's what's going on and I'm interested in:

1) first the flicker logo is large

2) by sliding the next page down in the magazine scale and moving with a nice animation

3) at the end of the logo scale down and move to the center, as well as the button moving up

I tried to achieve this effect with ViewPager.PageTransformer

. the problem is i can't control the animation flow with the number of sliding. my animation starts after a full transition to the next page.

i created simple animation like this one: (tried one of them every time)

XML

<scale
        android:fromXScale="1.0"
        android:fromYScale="1.0"
        android:toXScale="0.3"
        android:toYScale="0.3"
        android:pivotX="50%"
        android:pivotY="50%"
        android:duration="700"
        android:fillBefore="false" />

      

        
        
        
      

    

JAVA

TranslateAnimation trans = new TranslateAnimation(0, 0, logoText.getHeight() + coordinate[1], 0);
        trans.setDuration(1000);
        trans.setFillAfter(true);
        trans.setInterpolator(new AccelerateDecelerateInterpolator());

      

        
        
        
      

    

so how can i create a gif like effect?