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

The following examples show how to use android.support.v7.widget.RecyclerView#getChildCount() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: DividerItemDecoration.java From ExpandableLayout with Apache License 2.0

6 votes

@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
    super.onDrawOver(c, parent, state);
    final int left = parent.getPaddingLeft();
    final int right = parent.getWidth() - parent.getPaddingRight();

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                .getLayoutParams();
        final int top = child.getBottom() + params.bottomMargin;
        final int bottom = top + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 2

Source File: DividerItemDecoration.java From githot with Apache License 2.0

6 votes

public void drawVertical(Canvas c, RecyclerView parent) {
    final int left = (int) (parent.getPaddingLeft() + (rtl ? 0 : paddingStart));
    final int right =
            (int) (parent.getWidth() - parent.getPaddingRight() + (rtl ? paddingStart : 0));

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
        final int top = child.getBottom() + params.bottomMargin +
                Math.round(ViewCompat.getTranslationY(child));
        final int bottom = top + divider.getIntrinsicHeight();
        divider.setBounds(left, top, right, bottom);
        divider.draw(c);
    }
}

Example 3

Source File: DividerGridItemDecoration.java From NetEasyNews with GNU General Public License v3.0

6 votes

public void drawVertical(Canvas c, RecyclerView parent)
{
    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++)
    {
        final View child = parent.getChildAt(i);

        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                .getLayoutParams();
        final int top = child.getTop() - params.topMargin;
        final int bottom = child.getBottom() + params.bottomMargin;
        final int left = child.getRight() + params.rightMargin;
        final int right = left + mDivider.getIntrinsicWidth();

        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 4

Source File: DividerItemDecoration.java From MeetMusic with Apache License 2.0

6 votes

public void drawVertical(Canvas c, RecyclerView parent)
{
	final int left = parent.getPaddingLeft() + DIVIDER_PADING_LEFT;
	final int right = parent.getWidth() - parent.getPaddingRight();

	final int childCount = parent.getChildCount();

	for (int i = 0; i < childCount; i++)
	{
		final View child = parent.getChildAt(i);
		RecyclerView v = new RecyclerView(
				parent.getContext());
		final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
				.getLayoutParams();
		final int top = child.getBottom() + params.bottomMargin;
		final int bottom = top + mDivider.getIntrinsicHeight();
		mDivider.setBounds(left, top, right, bottom);
		mDivider.draw(c);
	}
}

Example 5

Source File: DividerItemDecoration.java From android-recyclerview with Apache License 2.0

6 votes

public void drawHorizontal(Canvas c, RecyclerView parent) {
    final int top = parent.getPaddingTop();
    final int bottom = parent.getHeight() - parent.getPaddingBottom();

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                .getLayoutParams();
        final int left = child.getRight() + params.rightMargin +
                Math.round(ViewCompat.getTranslationX(child));
        final int right = left + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 6

Source File: DividerItemDecoration.java From rv-adapter-states with MIT License

6 votes

public void drawVertical(Canvas c, RecyclerView parent) {
    final int left = parent.getPaddingLeft();
    final int right = parent.getWidth() - parent.getPaddingRight();

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                .getLayoutParams();
        final int top = child.getBottom() + params.bottomMargin +
                Math.round(ViewCompat.getTranslationY(child));
        final int bottom = top + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 7

Source File: DividerItemDecoration.java From Android-Tech with Apache License 2.0

6 votes

public void drawVertical(Canvas c, RecyclerView parent)
{
	final int left = parent.getPaddingLeft();
	final int right = parent.getWidth() - parent.getPaddingRight();

	final int childCount = parent.getChildCount();

	for (int i = 0; i < childCount; i++)
	{
		final View child = parent.getChildAt(i);
		RecyclerView v = new RecyclerView(
				parent.getContext());
		final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
				.getLayoutParams();
		final int top = child.getBottom() + params.bottomMargin;
		final int bottom = top + mDivider.getIntrinsicHeight();
		mDivider.setBounds(left, top, right, bottom);
		mDivider.draw(c);
	}
}

Example 8

Source File: DividerGridItemDecoration.java From PowerfulRecyclerView with Apache License 2.0

6 votes

public void drawHorizontal(Canvas c, RecyclerView parent)
{
    int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++)
    {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                .getLayoutParams();
        final int left = child.getLeft() - params.leftMargin;
        final int right = child.getRight() + params.rightMargin
                + mDivider.getIntrinsicWidth();
        final int top = child.getBottom() + params.bottomMargin;
        final int bottom = top + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 9

Source File: GridDividerDecorator.java From AlbumSelector with Apache License 2.0

6 votes

private void drawBottomDivider(Canvas c, RecyclerView parent) {
    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {

        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                .getLayoutParams();
        final int left = child.getLeft() - params.leftMargin;
        final int right = child.getRight() - params.rightMargin + mDividerSize;
        final int top = child.getBottom() + params.bottomMargin +
                Math.round(ViewCompat.getTranslationY(child));
        final int bottom = top + mDividerSize;
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 10

Source File: RecycleViewDivider.java From httplite with Apache License 2.0

6 votes

private void drawVertical(Canvas canvas, RecyclerView parent) {
    final int top = parent.getPaddingTop();
    final int bottom = parent.getMeasuredHeight() - parent.getPaddingBottom();
    final int childSize = parent.getChildCount();
    for (int i = 0; i < childSize; i++) {
        final View child = parent.getChildAt(i);
        RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) child.getLayoutParams();
        final int left = child.getRight() + layoutParams.rightMargin;
        final int right = left + mDividerHeight;
        if (mDivider != null) {
            mDivider.setBounds(left, top, right, bottom);
            mDivider.draw(canvas);
        }
        if (mPaint != null) {
            canvas.drawRect(left, top, right, bottom, mPaint);
        }
    }
}

Example 11

Source File: DividerItemDecoration.java From MyHearts with Apache License 2.0

6 votes

/**
 * 横向列表的横线
 *
 * @param c
 * @param parent
 */
private void drawHorizontal(Canvas c, RecyclerView parent) {
    final int top = parent.getPaddingTop();
    final int bottom = parent.getHeight() - parent.getPaddingBottom();

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                .getLayoutParams();
        final int left = child.getRight() + params.rightMargin;
        final int right = left + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 12

Source File: RecycleViewDivider.java From Ticket-Analysis with MIT License

6 votes

private void drawVertical(Canvas canvas, RecyclerView parent) {
    final int top = parent.getPaddingTop();
    final int bottom = parent.getMeasuredHeight() - parent.getPaddingBottom();
    final int childSize = parent.getChildCount();
    for (int i = 0; i < childSize; i++) {
        final View child = parent.getChildAt(i);
        RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) child.getLayoutParams();
        final int left = child.getRight() + layoutParams.rightMargin;
        final int right = left + mDividerHeight;
        if (mDivider != null) {
            mDivider.setBounds(left, top, right, bottom);
            mDivider.draw(canvas);
        }
        if (mPaint != null) {
            canvas.drawRect(left, top, right, bottom, mPaint);
        }
    }
}

Example 13

Source File: MyDividerItemDecoration.java From styT with Apache License 2.0

6 votes

/**
 * 绘制间隔
 */
private void drawHorizontal(Canvas c, RecyclerView parent) {
    final int top = parent.getPaddingTop();
    final int bottom = parent.getHeight() - parent.getPaddingBottom();
    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                .getLayoutParams();
        final int left = child.getRight() + params.rightMargin +
                Math.round(ViewCompat.getTranslationX(child));
        final int right = left + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 14

Source File: EndlessRecyclerOnScrollListener.java From PhotoDiscovery with Apache License 2.0

5 votes

@Override public void onScrolled(RecyclerView view, int dx, int dy) {

    int firstVisibleItem =
        mLinearLayoutManager.findFirstVisibleItemPositions(new int[mSpanCount])[0];

    int visibleItemCount = view.getChildCount();
    int totalItemCount = mLinearLayoutManager.getItemCount();

    // If the total item count is zero and the previous isn't, assume the
    // list is invalidated and should be reset back to initial state
    if (totalItemCount < previousTotalItemCount) {
      this.currentPage = this.startingPageIndex;
      this.previousTotalItemCount = totalItemCount;
      if (totalItemCount == 0) {
        this.loading = true;
      }
    }
    // If it’s still loading, we check to see if the dataset count has
    // changed, if so we conclude it has finished loading and update the current page
    // number and total item count.
    if (loading && (totalItemCount > previousTotalItemCount)) {
      loading = false;
      previousTotalItemCount = totalItemCount;
    }

    // If it isn’t currently loading, we check to see if we have breached
    // the visibleThreshold and need to reload more data.
    // If we do need to reload some more data, we execute onLoadMore to fetch the data.
    if (!loading && (totalItemCount - visibleItemCount) <= (firstVisibleItem + visibleThreshold)) {
      currentPage++;
      onLoadMore(currentPage, totalItemCount);
      loading = true;
    }
  }

Example 15

Source File: RecyclerSectionItemDecoration.java From recycler_view_headers with Apache License 2.0

5 votes

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

    if (headerView == null) {
        headerView = inflateHeaderView(parent);
        header = (TextView) headerView.findViewById(R.id.list_item_section_text);
        fixLayoutSize(headerView,
                      parent);
    }

    CharSequence previousHeader = "";
    for (int i = 0; i < parent.getChildCount(); i++) {
        View child = parent.getChildAt(i);
        final int position = parent.getChildAdapterPosition(child);

        CharSequence title = sectionCallback.getSectionHeader(position);
        header.setText(title);
        if (!previousHeader.equals(title) || sectionCallback.isSection(position)) {
            drawHeader(c,
                       child,
                       headerView);
            previousHeader = title;
        }
    }
}

Example 16

Source File: CommonRecyclerAdapter.java From QPM with Apache License 2.0

5 votes

public void drawVertical(Canvas canvas, RecyclerView parent) {
    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
        final int top = child.getTop() - params.topMargin;
        final int bottom = child.getBottom() + params.bottomMargin;
        final int left = child.getRight() + params.rightMargin;
        final int right = left + dividerHeight;
        canvas.drawRect(left, top, right, bottom, mPaint);
    }
}

Example 17

Source File: ViewUtils.java From RecyclerViewPager with Apache License 2.0

5 votes

/**
 * Get center child in X Axes
 */
public static View getCenterXChild(RecyclerView recyclerView) {
    int childCount = recyclerView.getChildCount();
    if (childCount > 0) {
        for (int i = 0; i < childCount; i++) {
            View child = recyclerView.getChildAt(i);
            if (isChildInCenterX(recyclerView, child)) {
                return child;
            }
        }
    }
    return null;
}

Example 18

Source File: DividerItemDecoration.java From Muzesto with GNU General Public License v3.0

5 votes

public void drawVertical(Canvas c, RecyclerView parent) {
    final int left = parent.getPaddingLeft();
    final int right = parent.getWidth() - parent.getPaddingRight();

    final int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
                .getLayoutParams();
        final int top = child.getBottom() + params.bottomMargin;
        final int bottom = top + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Example 19

Source File: StickyDecoration.java From AndroidFrame with Apache License 2.0

5 votes

@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
    super.onDrawOver(c, parent, state);
    final int itemCount = state.getItemCount();
    final int childCount = parent.getChildCount();
    final int left = parent.getPaddingLeft();
    final int right = parent.getWidth() - parent.getPaddingRight();

    for (int i = 0; i < childCount; i++) {
        View childView = parent.getChildAt(i);
        int position = parent.getChildAdapterPosition(childView);
        //默认第一个就是有个Group
        if (isFirstInGroup(position) || i == 0) {
            //绘制悬浮
            int bottom = Math.max(mGroupHeight, (childView.getTop() + parent.getPaddingTop()));//决定当前顶部第一个悬浮Group的bottom
            if (position + 1 < itemCount) {
                //下一组的第一个View接近头部
                int viewBottom = childView.getBottom();
                if (isLastLineInGroup(parent, position) && viewBottom < bottom) {
                    bottom = viewBottom;
                }
            }
            drawDecoration(c, position, left, right, bottom);
            stickyHeaderPosArray.put(position, bottom);
        } else {
            //绘制分割线
            drawDivide(c, parent, childView, position, left, right);
        }
    }
}

Example 20

Source File: DividedItemDecoration.java From example with Apache License 2.0

5 votes

private void drawHorizontal(Canvas c, RecyclerView parent) {
    final int top = parent.getPaddingTop();
    final int bottom = parent.getHeight() - parent.getPaddingBottom();
    final int childCount = parent.getChildCount();

    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
        final int left = child.getRight() + params.rightMargin;
        final int right = left + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}