android.support.v7.widget.RecyclerView#getChildViewHolder

Source File: StickHeaderDecoration.java From ItemDecorationDemo with Apache License 2.0

6 votes

/**
 * 下一个StickHeader的ViewHolder
 */
private RecyclerView.ViewHolder nextStickHolder(RecyclerView parent, int currPos) {
    int childCount = parent.getChildCount();
    if (childCount == 1) {
        return null;
    }
    for (int i = 1; i < childCount; i++) {
        //从RecyclerView第二个Child开始找
        View child = parent.getChildAt(i);
        int childPos = parent.getChildAdapterPosition(child);
        if (mProvider.isStick(childPos) && childPos > currPos) {
            return parent.getChildViewHolder(child);
        }
    }
    return null;
}

Source File: StickyHeadersItemDecoration.java From UltimateAndroid with Apache License 2.0

6 votes

@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {

    ensureHeaderLaidOut();

    RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams)view.getLayoutParams();
    RecyclerView.ViewHolder holder = parent.getChildViewHolder(view);

    if (overlay || !isHeader(holder)) {
        outRect.set(0, 0, 0, 0);
    }
    else {
        //TODO: Handle layout direction
        outRect.set(0, headerHeight, 0, 0);
    }

    if (lp.isItemRemoved()) {
        headers.remove(holder.getItemId());
    }
}

Source File: InsetDividerDecoration.java From Interessant with Apache License 2.0

6 votes

@Override
public void onDrawOver(Canvas canvas, RecyclerView parent, RecyclerView.State state) {
    int childCount = parent.getChildCount();
    if (childCount < 2) return;

    RecyclerView.LayoutManager lm = parent.getLayoutManager();
    float[] lines = new float[childCount * 4];
    boolean hasDividers = false;

    for (int i = 0; i < childCount; i++) {
        View child = parent.getChildAt(i);
        RecyclerView.ViewHolder viewHolder = parent.getChildViewHolder(child);

        if (viewHolder.getClass() == dividedClass) {
            lines[i * 4] = inset + lm.getDecoratedLeft(child);
            lines[(i * 4) + 2] = lm.getDecoratedRight(child);
            int y = lm.getDecoratedBottom(child) + (int) child.getTranslationY() - height;
            lines[(i * 4) + 1] = y;
            lines[(i * 4) + 3] = y;
            hasDividers = true;
        }
    }
    if (hasDividers) {
        canvas.drawLines(lines, paint);
    }
}

Source File: FocusResizeScrollListener.java From FocusResize with Apache License 2.0

6 votes

private void forceScrollItem(RecyclerView recyclerView, View view, int j, int positionScrolled) {
    if (!(recyclerView.getChildViewHolder(view) instanceof FocusResizeAdapter.FooterViewHolder)) {
        if (j == positionScrolled) {
            view.getLayoutParams().height = heightExpandedItem;
            adapter.onItemBigResizeScrolled(recyclerView.getChildViewHolder(view), itemToResize, dyAbs);
        } else {
            if (mLinearLayoutManager.findFirstCompletelyVisibleItemPosition()
                    == mLinearLayoutManager.getItemCount() - 1
                    || mLinearLayoutManager.findFirstCompletelyVisibleItemPosition() == -1) {
                view.getLayoutParams().height = heightExpandedItem;
                adapter.onItemBigResizeScrolled(recyclerView.getChildViewHolder(view), itemToResize, dyAbs);
            } else {
                view.getLayoutParams().height = heightCollapsedItem;
                adapter.onItemSmallResizeScrolled(recyclerView.getChildViewHolder(view), itemToResize, dyAbs);
            }
        }
    }
}

Source File: StickyHeadersItemDecoration.java From UltimateAndroid with Apache License 2.0

6 votes

@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {

    ensureHeaderLaidOut();

    RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams)view.getLayoutParams();
    RecyclerView.ViewHolder holder = parent.getChildViewHolder(view);

    if (overlay || !isHeader(holder)) {
        outRect.set(0, 0, 0, 0);
    }
    else {
        //TODO: Handle layout direction
        outRect.set(0, headerHeight, 0, 0);
    }

    if (lp.isItemRemoved()) {
        headers.remove(holder.getItemId());
    }
}

Source File: ExpandableAdapter.java From ExpandableRecyclerView with Apache License 2.0

6 votes

private RecyclerView findParent(BaseViewHolder holder) {
    RecyclerView parent = null;
    if (holder.associateRv != null) {
        parent = holder.associateRv.get();
    }
    if (parent != null) {
        return parent;
    } else {
        for (RecyclerView rv : mAttachedRecyclerViews) {
            RecyclerView.ViewHolder vh = rv.getChildViewHolder(holder.itemView);
            if (holder == vh) {
                return rv;
            }
        }
    }
    throw new RuntimeException("can not find parent for ViewHolder:" + holder);
}

Source File: MaterialViewPagerHeaderDecorator.java From MaterialViewPager with Apache License 2.0

6 votes

@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView recyclerView, RecyclerView.State state) {
    final RecyclerView.ViewHolder holder = recyclerView.getChildViewHolder(view);
    final Context context = recyclerView.getContext();

    if(!registered) {
        MaterialViewPagerHelper.registerRecyclerView(context, recyclerView);
        registered = true;
    }

    int headerCells = 1;

    //don't work with stagged
    RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
    if(layoutManager instanceof GridLayoutManager){
        GridLayoutManager gridLayoutManager = (GridLayoutManager)layoutManager;
        headerCells = gridLayoutManager.getSpanCount();
    }

    MaterialViewPagerAnimator animator = MaterialViewPagerHelper.getAnimator(context);
    if (animator != null) {
        if (holder.getAdapterPosition() < headerCells) {
            outRect.top = Math.round(Utils.dpToPx(animator.getHeaderHeight() + 10, context));
        }
    }
}

Source File: DefaultAdapter.java From Aurora with Apache License 2.0

5 votes

/**
 * 遍历所有{@link BaseHolder},释放他们需要释放的资源
 *
 * @param recyclerView
 */
public static void releaseAllHolder(RecyclerView recyclerView) {
    if (recyclerView == null) return;
    for (int i = recyclerView.getChildCount() - 1; i >= 0; i--) {
        final View view = recyclerView.getChildAt(i);
        RecyclerView.ViewHolder viewHolder = recyclerView.getChildViewHolder(view);
        if (viewHolder != null && viewHolder instanceof BaseHolder) {
            ((BaseHolder) viewHolder).onRelease();
        }
    }
}

Source File: StickyHeadersItemDecoration.java From UltimateAndroid with Apache License 2.0

5 votes

@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {


    final int childCount = parent.getChildCount();
    final RecyclerView.LayoutManager lm = parent.getLayoutManager();
    View header = headerViewHolder.itemView;
    Float lastY = null;

    for (int i = childCount - 1; i >= 0; i--) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams)child.getLayoutParams();
        final int position = parent.getChildPosition(child);
        RecyclerView.ViewHolder holder = parent.getChildViewHolder(child);

        if (!lp.isItemRemoved()) {

            float translationY = ViewCompat.getTranslationY(child);

            if (i == 0 || isHeader(holder)) {

                float y = getHeaderY(child, lm) + translationY;

                if (lastY != null && lastY < y + headerHeight) {
                    y = lastY - headerHeight;
                }

                adapter.onBindViewHolder(headerViewHolder, position);

                c.save();
                c.translate(0, y);
                header.draw(c);
                c.restore();

                lastY = y;
            }
        }
    }
}

Source File: StickyHeadersItemDecoration.java From UltimateAndroid with Apache License 2.0

5 votes

@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {


    final int childCount = parent.getChildCount();
    final RecyclerView.LayoutManager lm = parent.getLayoutManager();
    View header = headerViewHolder.itemView;
    Float lastY = null;

    for (int i = childCount - 1; i >= 0; i--) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams)child.getLayoutParams();
        final int position = parent.getChildPosition(child);
        RecyclerView.ViewHolder holder = parent.getChildViewHolder(child);

        if (!lp.isItemRemoved()) {

            float translationY = ViewCompat.getTranslationY(child);

            if (i == 0 || isHeader(holder)) {

                float y = getHeaderY(child, lm) + translationY;

                if (lastY != null && lastY < y + headerHeight) {
                    y = lastY - headerHeight;
                }

                adapter.onBindViewHolder(headerViewHolder, position);

                c.save();
                c.translate(0, y);
                header.draw(c);
                c.restore();

                lastY = y;
            }
        }
    }
}

Source File: GridItemDividerDecoration.java From android-proguards with Apache License 2.0

5 votes

@Override
public void onDrawOver(Canvas canvas, RecyclerView parent, RecyclerView.State state) {
    if (parent.isAnimating()) return;

    final int childCount = parent.getChildCount();
    final RecyclerView.LayoutManager lm = parent.getLayoutManager();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        RecyclerView.ViewHolder viewHolder = parent.getChildViewHolder(child);

        if (requiresDivider(viewHolder)) {
            final int right = lm.getDecoratedRight(child);
            final int bottom = lm.getDecoratedBottom(child);
            // draw the bottom divider
            canvas.drawRect(lm.getDecoratedLeft(child),
                    bottom - dividerSize,
                    right,
                    bottom,
                    paint);
            // draw the right edge divider
            canvas.drawRect(right - dividerSize,
                    lm.getDecoratedTop(child),
                    right,
                    bottom - dividerSize,
                    paint);
        }
    }
}

Source File: InsetDividerDecoration.java From android-proguards with Apache License 2.0

5 votes

@Override
public void onDrawOver(Canvas canvas, RecyclerView parent, RecyclerView.State state) {
    int childCount = parent.getChildCount();
    if (childCount < 2) return;

    RecyclerView.LayoutManager lm = parent.getLayoutManager();
    float[] lines = new float[childCount * 4];
    boolean hasDividers = false;

    for (int i = 0; i < childCount; i++) {
        View child = parent.getChildAt(i);
        RecyclerView.ViewHolder viewHolder = parent.getChildViewHolder(child);

        if (viewHolder.getClass() == dividedClass) {
            // skip if this *or next* view is activated
            if (child.isActivated()
                 || (i + 1 < childCount && parent.getChildAt(i + 1).isActivated())) {
                continue;
            }
            lines[i * 4] = inset + lm.getDecoratedLeft(child);
            lines[(i * 4) + 2] = lm.getDecoratedRight(child);
            int y = lm.getDecoratedBottom(child) + (int) child.getTranslationY() - height;
            lines[(i * 4) + 1] = y;
            lines[(i * 4) + 3] = y;
            hasDividers = true;
        }
    }
    if (hasDividers) {
        canvas.drawLines(lines, paint);
    }
}

Source File: TeamTagTest.java From talk-android with MIT License

5 votes

@UiThreadTest
public void testUpdateTag() {
    TeamTagActivity activity = getActivity();
    mPresenter = new TeamTagPresenter(activity);
    mPresenter.attachModule(new TestTagModel());
    mPresenter.updateTag("", "");
    RecyclerView recyclerView = (RecyclerView) activity.findViewById(R.id.team_tag_recycler);
    assertNotNull(recyclerView);
    LinearLayoutManager manager = (LinearLayoutManager) recyclerView.getLayoutManager();
    TextView textView = (TextView) recyclerView.getChildViewHolder(manager.getChildAt(0)).itemView;
    assertEquals(textView.getText().toString(), "teambition");
}

Source File: HTItemDecoration.java From ht-refreshrecyclerview with MIT License

5 votes

@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {
    final RecyclerView.ViewHolder childViewHolder = parent.getChildViewHolder(view);
    if (childViewHolder instanceof HTWrapperAdapter.InnerViewHolder) {
        outRect.set(0, 0, 0, 0);//如果是加载更多的ViewHolder,不进行装饰
        return;
    }
    if (mInnerItemDecoration != null) {
        mInnerItemDecoration.getItemOffsets(outRect, view, parent, state);
    }
}

Source File: FocusResizeScrollListener.java From FocusResize with Apache License 2.0

5 votes

private void calculateScrolledPosition(int totalItemCount, RecyclerView recyclerView) {
    for (int j = 0; j < totalItemCount - 1; j++) {
        View view = recyclerView.getChildAt(j);
        if (view != null) {
            if (!(recyclerView.getChildViewHolder(view) instanceof FocusResizeAdapter.FooterViewHolder)) {
                if (j == itemToResize) {
                    onItemBigResize(view, recyclerView);
                } else {
                    onItemSmallResize(view, recyclerView);
                }
                view.requestLayout();
            }
        }
    }
}

Source File: InsetDividerDecoration.java From mvvm-template with GNU General Public License v3.0

5 votes

@Override public void onDrawOver(@NonNull Canvas canvas, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
    int childCount = parent.getChildCount();
    if (childCount < 2) return;
    RecyclerView.LayoutManager lm = parent.getLayoutManager();
    float[] lines = new float[childCount * 4];
    boolean hasDividers = false;
    for (int i = 0; i < childCount; i++) {
        View child = parent.getChildAt(i);
        RecyclerView.ViewHolder viewHolder = parent.getChildViewHolder(child);
        if (!(viewHolder instanceof ProgressBarViewHolder)) {
            boolean canDivide = toDivide == null || viewHolder.getClass() == toDivide;
            if (canDivide) {
                int position = parent.getChildAdapterPosition(child);
                if (child.isActivated() || (i + 1 < childCount && parent.getChildAt(i + 1).isActivated())) {
                    continue;
                }
                if (position != (state.getItemCount() - 1)) {
                    lines[i * 4] = inset == 0 ? inset : inset + lm.getDecoratedLeft(child);
                    lines[(i * 4) + 2] = lm.getDecoratedRight(child);
                    int y = lm.getDecoratedBottom(child) + (int) child.getTranslationY() - height;
                    lines[(i * 4) + 1] = y;
                    lines[(i * 4) + 3] = y;
                    hasDividers = true;
                }
            }
        }
    }
    if (hasDividers) {
        canvas.drawLines(lines, paint);
    }
}

Source File: ItemOffsetDecoration.java From RecyclerViewTools with Apache License 2.0

4 votes

@Override
public void getItemOffsets(Rect outRect, View view, RecyclerView parent, RecyclerView.State state) {

   WrapAdapter wrapAdapter = null;
   RecyclerView.Adapter adapter = parent.getAdapter();

   int adapterCount = adapter.getItemCount();

   if (adapter instanceof WrapAdapter) {
      wrapAdapter = (WrapAdapter) adapter;
      adapter = wrapAdapter.getWrapped();
   }

   // make exception for wrapAdapter special view types
   if (wrapAdapter != null) {
      RecyclerView.ViewHolder vh = parent.getChildViewHolder(view);

      // if it's a special view
      if (vh.getItemViewType() > MAIN_VIEW_TYPE_MASK) {
         if (disableSpecialViewsSpacing) {
            outRect.set(0, 0, 0, 0);
         } else {
            outRect.set(externalOffset);
         }
         return;
      }
   }

   int numHeaders = (wrapAdapter == null) ? 0 : wrapAdapter.getHeaderCount();
   int adapterPosition = parent.getChildAdapterPosition(view);
   int offsetAdapterPosition = adapterPosition - numHeaders;

   int spanCount = 1;
   RecyclerView.LayoutManager lm = parent.getLayoutManager();
   if (lm instanceof GridLayoutManager) {
      spanCount = ((GridLayoutManager) lm).getSpanCount();
   } else if (lm instanceof StaggeredGridLayoutManager) {
      spanCount = ((StaggeredGridLayoutManager) lm).getSpanCount();
   }

   final boolean isTop = offsetAdapterPosition < spanCount;
   final boolean isBottom = adapterCount - adapterPosition < spanCount;

   boolean isLeft;
   boolean isRight;

   ViewGroup.LayoutParams lp = view.getLayoutParams();

   // Grid
   if (lp instanceof GridLayoutManager.LayoutParams) {
      GridLayoutManager.LayoutParams glp = (GridLayoutManager.LayoutParams) lp;

      isLeft = glp.getSpanIndex() == 0;
      isRight = glp.getSpanIndex() + glp.getSpanSize() == spanCount;

   }

   // StaggeredGrid
   else if (lp instanceof StaggeredGridLayoutManager.LayoutParams) {
      StaggeredGridLayoutManager.LayoutParams sglp = (StaggeredGridLayoutManager.LayoutParams) lp;

      isLeft = sglp.getSpanIndex() == 0;
      isRight = sglp.getSpanIndex() == spanCount - 1;

   }

   // Assume Linear
   else {

      int itemColumn = offsetAdapterPosition % spanCount;
      isLeft = itemColumn == 0;
      isRight = itemColumn == spanCount - 1;

   }

   outRect.set(internalOffset);

   if (isTop) {
      outRect.top = externalOffset.top;
   }
   if (isBottom) {
      outRect.bottom = externalOffset.bottom;
   }
   if (isLeft) {
      outRect.left = externalOffset.left;
   }
   if (isRight) {
      outRect.right = externalOffset.right;
   }
}

Source File: DividerDecoration.java From android-periodic-table with GNU General Public License v3.0

4 votes

private boolean isDecorated(View view, RecyclerView parent) {
    RecyclerView.ViewHolder holder = parent.getChildViewHolder(view);

    return !(holder instanceof PropertiesAdapter.ViewHolder &&
            holder.getItemViewType() == PropertiesAdapter.VIEW_TYPE_HEADER);
}

Source File: DividerDecoration.java From android-cache-cleaner with MIT License

4 votes

private boolean isDecorated(View view, RecyclerView parent) {
    RecyclerView.ViewHolder holder = parent.getChildViewHolder(view);

    return !(holder instanceof AppsListAdapter.HeaderViewHolder &&
            holder.getItemViewType() == AppsListAdapter.VIEW_TYPE_HEADER);
}

Java Code Examples for android.support.v7.widget.RecyclerView#getChildViewHolder()