@Override public boolean animateMove(final ViewHolder holder, int fromX, int fromY, int toX, int toY) { final View view = holder.itemView; fromX += ViewCompat.getTranslationX(holder.itemView); fromY += ViewCompat.getTranslationY(holder.itemView); endAnimation(holder); int deltaX = toX - fromX; int deltaY = toY - fromY; if (deltaX == 0 && deltaY == 0) { dispatchMoveFinished(holder); return false; } if (deltaX != 0) { ViewCompat.setTranslationX(view, -deltaX); } if (deltaY != 0) { ViewCompat.setTranslationY(view, -deltaY); } mPendingMoves.add(new MoveInfo(holder, fromX, fromY, toX, toY)); return true; }
@Override public boolean animateChange(ViewHolder oldHolder, ViewHolder newHolder, int fromX, int fromY, int toX, int toY) { if (oldHolder == newHolder) { // Don't know how to run change animations when the same view holder is re-used. // run a move animation to handle position changes. return animateMove(oldHolder, fromX, fromY, toX, toY); } final float prevTranslationX = ViewCompat.getTranslationX(oldHolder.itemView); final float prevTranslationY = ViewCompat.getTranslationY(oldHolder.itemView); final float prevAlpha = ViewCompat.getAlpha(oldHolder.itemView); endAnimation(oldHolder); int deltaX = (int) (toX - fromX - prevTranslationX); int deltaY = (int) (toY - fromY - prevTranslationY); // recover prev translation state after ending animation ViewCompat.setTranslationX(oldHolder.itemView, prevTranslationX); ViewCompat.setTranslationY(oldHolder.itemView, prevTranslationY); ViewCompat.setAlpha(oldHolder.itemView, prevAlpha); if (newHolder != null && newHolder.itemView != null) { // carry over translation values endAnimation(newHolder); ViewCompat.setTranslationX(newHolder.itemView, -deltaX); ViewCompat.setTranslationY(newHolder.itemView, -deltaY); ViewCompat.setAlpha(newHolder.itemView, 0); } mPendingChanges.add(new ChangeInfo(oldHolder, newHolder, fromX, fromY, toX, toY)); return true; }
@Nullable public View findSubHeaderViewUnder(float x, float y) { for (RecyclerView.ViewHolder holder : subHeaderCache.values()) { final View child = holder.itemView; final float translationX = ViewCompat.getTranslationX(child); final float translationY = ViewCompat.getTranslationY(child); if (x >= child.getLeft() + translationX && x <= child.getRight() + translationX && y >= child.getTop() + translationY && y <= child.getBottom() + translationY) { return child; } } return null; }
@Nullable public View findHeaderViewUnder(float x, float y) { for (RecyclerView.ViewHolder holder : headerCache.values()) { final View child = holder.itemView; final float translationX = ViewCompat.getTranslationX(child); final float translationY = ViewCompat.getTranslationY(child); if (x >= child.getLeft() + translationX && x <= child.getRight() + translationX && y >= child.getTop() + translationY && y <= child.getBottom() + translationY) { return child; } } return null; }
@Nullable public View findHeaderViewUnder(float x, float y) { for (RecyclerView.ViewHolder holder : headerCache.values()) { final View child = holder.itemView; final float translationX = ViewCompat.getTranslationX(child); final float translationY = ViewCompat.getTranslationY(child); if (x >= child.getLeft() + translationX && x <= child.getRight() + translationX && y >= child.getTop() + translationY && y <= child.getBottom() + translationY) { return child; } } return null; }
@Override public void onDraw(Canvas canvas, RecyclerView parent, RecyclerView.State state) { canvas.save(); final int left; final int right; if (parent.getClipToPadding()) { left = parent.getPaddingLeft(); right = parent.getWidth() - parent.getPaddingRight(); canvas.clipRect(left, parent.getPaddingTop(), right, parent.getHeight() - parent.getPaddingBottom()); } else { left = 0; right = parent.getWidth(); } final int childCount = parent.getChildCount(); for (int i = 0; i < childCount; i++) { final View child = parent.getChildAt(i); if (!hasDivider(parent, child)) continue; parent.getDecoratedBoundsWithMargins(child, mBounds); final int bottom = mBounds.bottom + Math.round(ViewCompat.getTranslationY(child)); final int top = bottom - mDivider.getIntrinsicHeight(); mDivider.setBounds(left, top, right, bottom); mDivider.setAlpha((int) (child.getAlpha() * 255)); mDivider.draw(canvas); } canvas.restore(); }
@Override public boolean animateMove(final ViewHolder holder, int fromX, int fromY, int toX, int toY) { final View view = holder.itemView; fromX += ViewCompat.getTranslationX(holder.itemView); fromY += ViewCompat.getTranslationY(holder.itemView); resetAnimation(holder); int deltaX = toX - fromX; int deltaY = toY - fromY; if (deltaX == 0 && deltaY == 0) { dispatchMoveFinished(holder); return false; } if (deltaX != 0) { ViewCompat.setTranslationX(view, -deltaX); } if (deltaY != 0) { ViewCompat.setTranslationY(view, -deltaY); } mPendingMoves.add(new MoveInfo(holder, fromX, fromY, toX, toY)); return true; }
public void changeAnimation(RecyclerView.ViewHolder oldHolder, RecyclerView.ViewHolder newHolder, int fromX, int fromY, int toX, int toY) { final float prevTranslationX = ViewCompat.getTranslationX(oldHolder.itemView); final float prevTranslationY = ViewCompat.getTranslationY(oldHolder.itemView); final float prevValue = changeAnimationPrepare1(oldHolder); resetAnimation(oldHolder); int deltaX = (int) (toX - fromX - prevTranslationX); int deltaY = (int) (toY - fromY - prevTranslationY); // recover prev translation state after ending animation ViewCompat.setTranslationX(oldHolder.itemView, prevTranslationX); ViewCompat.setTranslationY(oldHolder.itemView, prevTranslationY); changeAnimationPrepare2(oldHolder, prevValue); if (newHolder != null) { // carry over translation values resetAnimation(newHolder); ViewCompat.setTranslationX(newHolder.itemView, -deltaX); ViewCompat.setTranslationY(newHolder.itemView, -deltaY); changeAnimationPrepare3(newHolder); } }
/** * the whole change animation if we have to cross animate two views * * @param oldHolder * @param newHolder * @param fromX * @param fromY * @param toX * @param toY */ public void changeAnimation(ViewHolder oldHolder, ViewHolder newHolder, int fromX, int fromY, int toX, int toY) { final float prevTranslationX = ViewCompat.getTranslationX(oldHolder.itemView); final float prevTranslationY = ViewCompat.getTranslationY(oldHolder.itemView); final float prevValue = ViewCompat.getAlpha(oldHolder.itemView); resetAnimation(oldHolder); int deltaX = (int) (toX - fromX - prevTranslationX); int deltaY = (int) (toY - fromY - prevTranslationY); // recover prev translation state after ending animation ViewCompat.setTranslationX(oldHolder.itemView, prevTranslationX); ViewCompat.setTranslationY(oldHolder.itemView, prevTranslationY); ViewCompat.setAlpha(oldHolder.itemView, prevValue); if (newHolder != null) { // carry over translation values resetAnimation(newHolder); ViewCompat.setTranslationX(newHolder.itemView, -deltaX); ViewCompat.setTranslationY(newHolder.itemView, -deltaY); ViewCompat.setAlpha(newHolder.itemView, 0); } }