Examples with START android.support.v7.widget.helper.ItemTouchHelper.START used on opensource projects

Example 26 with START

use of android.support.v7.widget.helper.ItemTouchHelper.START in project UltimateAndroid by cymcsg.

the class StaticGridLayoutManager method onLayoutChildren.

/*
     * This method is your initial call from the framework. You will receive it when you
     * need to start laying out the initial set of views. This method will not be called
     * repeatedly, so don't rely on it to continually process changes during user
     * interaction.
     *
     * This method will be called when the data set in the adapter changes, so it can be
     * used to update a layout based on a new item count.
     */
@Override
public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
    //We have nothing to show for an empty data set but clear any existing views
    if (getItemCount() == 0) {
        detachAndScrapAttachedViews(recycler);
        return;
    }
    //Make the grid as square as possible, column count is root of the data set
    mTotalColumnCount = (int) Math.round(Math.sqrt(getItemCount()));
    if (getChildCount() == 0) {
        //First or empty layout
        //Scrap measure one child
        View scrap = recycler.getViewForPosition(0);
        addView(scrap);
        measureChildWithMargins(scrap, 0, 0);
        /*
             * We make some assumptions in this code based on every child
             * view being the same size (i.e. a uniform grid). This allows
             * us to compute the following values up front because they
             * won't change.
             */
        mDecoratedChildWidth = getDecoratedMeasuredWidth(scrap);
        mDecoratedChildHeight = getDecoratedMeasuredHeight(scrap);
        detachAndScrapView(scrap, recycler);
    }
    //Always update the visible row/column counts
    updateWindowSizing();
    int childLeft;
    int childTop;
    if (getChildCount() == 0) {
        //First or empty layout
        /*
             * Reset the visible and scroll positions
             */
        mFirstVisiblePosition = 0;
        childLeft = childTop = 0;
    } else if (getVisibleChildCount() > getItemCount()) {
        //Data set is too small to scroll fully, just reset position
        mFirstVisiblePosition = 0;
        childLeft = childTop = 0;
    } else {
        //Adapter data set changes
        /*
             * Keep the existing initial position, and save off
             * the current scrolled offset.
             */
        final View topChild = getChildAt(0);
        if (mForceClearOffsets) {
            childLeft = childTop = 0;
            mForceClearOffsets = false;
        } else {
            childLeft = getDecoratedLeft(topChild);
            childTop = getDecoratedTop(topChild);
        }
        /*
             * Adjust the visible position if out of bounds in the
             * new layout. This occurs when the new item count in an adapter
             * is much smaller than it was before, and you are scrolled to
             * a location where no items would exist.
             */
        int lastVisiblePosition = positionOfIndex(getVisibleChildCount() - 1);
        if (lastVisiblePosition >= getItemCount()) {
            lastVisiblePosition = (getItemCount() - 1);
            int lastColumn = mVisibleColumnCount - 1;
            int lastRow = mVisibleRowCount - 1;
            //Adjust to align the last position in the bottom-right
            mFirstVisiblePosition = Math.max(lastVisiblePosition - lastColumn - (lastRow * getTotalColumnCount()), 0);
            childLeft = getHorizontalSpace() - (mDecoratedChildWidth * mVisibleColumnCount);
            childTop = getVerticalSpace() - (mDecoratedChildHeight * mVisibleRowCount);
            // This happens on data sets too small to scroll in a direction.
            if (getFirstVisibleRow() == 0) {
                childTop = Math.min(childTop, 0);
            }
            if (getFirstVisibleColumn() == 0) {
                childLeft = Math.min(childLeft, 0);
            }
        }
    }
    //Clear all attached views into the recycle bin
    detachAndScrapAttachedViews(recycler);
    //Fill the grid for the initial layout of views
    fillGrid(DIRECTION_NONE, childLeft, childTop, recycler);
}

Example 27 with START

use of android.support.v7.widget.helper.ItemTouchHelper.START in project UltimateAndroid by cymcsg.

the class ScaleInOutItemAnimator method animateAddImpl.

protected void animateAddImpl(final RecyclerView.ViewHolder holder) {
    final View view = holder.itemView;
    ViewCompat.animate(view).cancel();
    ViewCompat.animate(view).scaleX(mOriginalScaleX).scaleY(mOriginalScaleY).setDuration(getAddDuration()).setListener(new VpaListenerAdapter() {

        @Override
        public void onAnimationCancel(View view) {
            ViewCompat.setScaleX(view, mOriginalScaleX);
            ViewCompat.setScaleY(view, mOriginalScaleY);
        }

        @Override
        public void onAnimationEnd(View view) {
            dispatchAddFinished(holder);
            mAddAnimations.remove(holder);
            dispatchFinishedWhenDone();
        }
    }).start();
    mAddAnimations.add(holder);
}

Example 28 with START

use of android.support.v7.widget.helper.ItemTouchHelper.START in project UltimateAndroid by cymcsg.

the class SlideInOutBottomItemAnimator method animateRemoveImpl.

protected void animateRemoveImpl(final RecyclerView.ViewHolder holder) {
    final View view = holder.itemView;
    ViewCompat.animate(view).cancel();
    ViewCompat.animate(view).setDuration(getRemoveDuration()).translationY(+mDeltaY).setListener(new VpaListenerAdapter() {

        @Override
        public void onAnimationEnd(View view) {
            ViewCompat.setTranslationY(view, +mDeltaY);
            dispatchRemoveFinished(holder);
            mRemoveAnimations.remove(holder);
            dispatchFinishedWhenDone();
        }
    }).start();
    mRemoveAnimations.add(holder);
}

Example 29 with START

use of android.support.v7.widget.helper.ItemTouchHelper.START in project UltimateAndroid by cymcsg.

the class SlideInOutBottomItemAnimator method animateAddImpl.

protected void animateAddImpl(final RecyclerView.ViewHolder holder) {
    final View view = holder.itemView;
    ViewCompat.animate(view).cancel();
    ViewCompat.animate(view).translationY(0).setDuration(getAddDuration()).setListener(new VpaListenerAdapter() {

        @Override
        public void onAnimationCancel(View view) {
            ViewCompat.setTranslationY(view, 0);
        }

        @Override
        public void onAnimationEnd(View view) {
            dispatchAddFinished(holder);
            mAddAnimations.remove(holder);
            dispatchFinishedWhenDone();
        }
    }).start();
    mAddAnimations.add(holder);
}

Example 30 with START

use of android.support.v7.widget.helper.ItemTouchHelper.START in project UltimateAndroid by cymcsg.

the class SlideInOutRightItemAnimator method animateAddImpl.

protected void animateAddImpl(final RecyclerView.ViewHolder holder) {
    final View view = holder.itemView;
    ViewCompat.animate(view).cancel();
    ViewCompat.animate(view).translationX(0).setDuration(getAddDuration()).setListener(new VpaListenerAdapter() {

        @Override
        public void onAnimationCancel(View view) {
            ViewCompat.setTranslationX(view, 0);
        }

        @Override
        public void onAnimationEnd(View view) {
            dispatchAddFinished(holder);
            mAddAnimations.remove(holder);
            dispatchFinishedWhenDone();
        }
    }).start();
    mAddAnimations.add(holder);
}