问题:

I have a FrameLayout that recognize swipe gestures (up and down).

For example: if a swipe up are performed, I should animate the current view (that is MATCH_PARENT x MATCH_PARENT) to goes up at the same time a new view come from bottom.

I can achieve this with animations?

回答1:

I solved this way:

private void swipeUp() {
    current.currentPage++;

    final View hidingView = currentView;
    TranslateAnimation hide = new TranslateAnimation(0, 0, 0, -getHeight());
    hide.setAnimationListener(new AnimationListenerAdapter() {
        @Override
        public void onAnimationEnd(Animation animation) {
            hidingView.setVisibility(View.GONE);
        }
    });
    hide.setDuration(1000);
    hidingView.startAnimation(hide);

    TranslateAnimation show = new TranslateAnimation(0, 0, getHeight(), 0);
    show.setFillAfter(true);
    show.setDuration(1000);

    View nextView = getView();
    addView(nextView, createLP());

    nextView.startAnimation(show);
    currentView = nextView;
}

回答2:

If you want to actually switch views, you need to implement an AnimationListener that takes care of the animation. If you want more complex behavior like a "finger following" scroller between views, you will likely have to use something a bit more complex, but if you're just saying