private void animateAddImpl(final ViewHolder holder) {
final View view = holder.itemView;
final ViewPropertyAnimatorCompat animation = ViewCompat.animate(view);
mAddAnimations.add(holder);
float startX, startY;
int position = (int) view.getTag();
if (position % 2 == 0) {
startY = -100;
startX = -width;
} else {
startY = 100;
startX = width;
}
Log.d("test", String.valueOf(holder.getLayoutPosition()));
ViewCompat.setTranslationX(view, startX);
// 应该是相对偏移
ViewCompat.setTranslationY(view, startY);
ViewCompat.setAlpha(view, 0);
animation.setInterpolator(new OvershootInterpolator());
animation
.alpha(1)
.translationX(0)
.translationY(0)
.setDuration(getAddDuration())
.setListener(
new VpaListenerAdapter() {
@Override
public void onAnimationStart(View view) {
dispatchAddStarting(holder);
}
@Override
public void onAnimationCancel(View view) {
ViewCompat.setAlpha(view, 1);
}
@Override
public void onAnimationEnd(View view) {
animation.setListener(null);
dispatchAddFinished(holder);
mAddAnimations.remove(holder);
dispatchFinishedWhenDone();
// 使用这个来复原
ViewCompat.setTranslationY(view, 0);
}
})
.start();
}
private void animateRemoveImpl(final ViewHolder holder) {
final View view = holder.itemView;
int position = (int) view.getTag();
final ViewPropertyAnimatorCompat animation = ViewCompat.animate(view);
float endX, endY;
if (position % 2 == 0) {
endY = -100;
endX = -width;
} else {
endY = 100;
endX = width;
}
mRemoveAnimations.add(holder);
animation.setInterpolator(new AnticipateOvershootInterpolator());
animation
.setDuration(getRemoveDuration())
.alpha(0)
.translationX(endX)
.translationY(endY)
.setListener(
new VpaListenerAdapter() {
@Override
public void onAnimationStart(View view) {
dispatchRemoveStarting(holder);
}
@Override
public void onAnimationEnd(View view) {
animation.setListener(null);
// 重置为正常
ViewCompat.setAlpha(view, 1);
ViewCompat.setTranslationX(view, 0);
ViewCompat.setTranslationY(view, 0);
dispatchRemoveFinished(holder);
mRemoveAnimations.remove(holder);
dispatchFinishedWhenDone();
}
})
.start();
}
void start() {
final View containerView =
((SwipeableItemViewHolder) mViewHolder).getSwipeableContainerView();
mInvSize =
(1.0f
/ Math.max(1.0f, mHorizontal ? containerView.getWidth() : containerView.getHeight()));
// setup animator
mAnimator = ViewCompat.animate(containerView);
mAnimator.setDuration(mDuration);
mAnimator.translationX(mToX);
mAnimator.translationY(mToY);
if (mInterpolator != null) {
mAnimator.setInterpolator(mInterpolator);
}
mAnimator.setListener(this);
mAnimator.setUpdateListener(this);
// start
mActive.add(mViewHolder);
mAnimator.start();
}