android.support.v7.widget.RecyclerView#getChildAt

Source File: LineDecoration.java From Android with MIT License

6 votes

@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State 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 + mDrawable.getIntrinsicHeight();
        mDrawable.setBounds(left, top, right, bottom);
        mDrawable.draw(c);
    }
}

Source File: VerticalDividerDecoration.java From AndroidPlayground with MIT License

6 votes

@Override
public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State 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 + 25;
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Source File: StickyHeaderDecoration.java From Silence with GNU General Public License v3.0

6 votes

/**
 * {@inheritDoc}
 */
@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
  final int count = parent.getChildCount();

  for (int layoutPos = 0; layoutPos < count; layoutPos++) {
    final View child = parent.getChildAt(translatedChildPosition(parent, layoutPos));

    final int adapterPos = parent.getChildAdapterPosition(child);

    if (adapterPos != RecyclerView.NO_POSITION && ((layoutPos == 0 && sticky) || hasHeader(parent, adapter, adapterPos))) {
      View header = getHeader(parent, adapter, adapterPos).itemView;
      c.save();
      final int left = child.getLeft();
      final int top = getHeaderTop(parent, child, header, adapterPos, layoutPos);
      c.translate(left, top);
      header.draw(c);
      c.restore();
    }
  }
}

Source File: ScrollStateUtil.java From SimpleProject with MIT License

6 votes

/**
 * RecycleView是否已滑动到顶部
 * @param recyclerView
 * @return
 */
public static boolean recycleViewReachTop(RecyclerView recyclerView) {
	RecyclerView.LayoutManager layoutManager = recyclerView.getLayoutManager();
	if (layoutManager == null || layoutManager.getItemCount() == 0) {
		return true;
	}

	View firstChild = recyclerView.getChildAt(0);
	int position = recyclerView.getChildAdapterPosition(firstChild);
	int firstItemTop = firstChild.getTop() - recyclerView.getPaddingTop();

	if (layoutManager instanceof LinearLayoutManager
			&& ((LinearLayoutManager) layoutManager).getOrientation() == LinearLayoutManager.VERTICAL) {
		return position == 0 && firstItemTop == 0;
	} else if (layoutManager instanceof GridLayoutManager) {
		return position < ((GridLayoutManager)layoutManager).getSpanCount() && firstItemTop == 0;
	} else {
		/**
		 * Nothing
		 */
	}

	return false;
}

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

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);
    }
}

Source File: DividerItemDecoration.java From DesignSupportDemo 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);
        android.support.v7.widget.RecyclerView v = new android.support.v7.widget.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);
    }
}

Source File: SpaceItemDecoration.java From FoodOrdering 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);
    }
}

Source File: LuSpacesItemDecoration.java From LRecyclerView with Apache License 2.0

6 votes

public void drawHorizontal(Canvas c, RecyclerView parent,LuRecyclerViewAdapter adapter) {
    int count = parent.getChildCount();

    for (int i = 0; i < count; i++) {
        final View child = parent.getChildAt(i);
        final int top = child.getBottom();
        final int bottom = top + verticalSpacing;

        int left = child.getLeft() ;
        int right = child.getRight();

        int position = parent.getChildAdapterPosition(child);

        c.save();

        if (adapter. isHeader(position) || adapter.isFooter(position)) {
            c.drawRect(0, 0, 0, 0, mPaint);
        }else {
            c.drawRect(left, top, right, bottom, mPaint);
        }

        c.restore();
    }
}

Source File: RBaseItemDecoration.java From FimiX8-RE with MIT License

6 votes

public void drawHorizontal(Canvas c, RecyclerView parent) {
    int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        View child = parent.getChildAt(i);
        LayoutParams params = (LayoutParams) child.getLayoutParams();
        int left = child.getLeft() - params.leftMargin;
        int right = (child.getRight() + params.rightMargin) + this.mDividerHeight;
        int top = child.getBottom() + params.bottomMargin;
        int bottom = top + this.mDividerHeight;
        if (this.mDivider != null) {
            this.mDivider.setBounds(left, top, right, bottom);
            this.mDivider.draw(c);
        }
        if (this.mPaint != null) {
            c.drawRect((float) left, (float) top, (float) right, (float) bottom, this.mPaint);
        }
    }
}

Source File: DividerItemDecorator.java From android-samples with Apache License 2.0

6 votes

@Override
public void onDraw(Canvas canvas, RecyclerView parent, RecyclerView.State state) {
    int dividerLeft = parent.getPaddingLeft();
    int dividerRight = parent.getWidth() - parent.getPaddingRight();

    int childCount = parent.getChildCount();
    for (int i = 0; i < childCount - 1; i++) {
        View child = parent.getChildAt(i);

        RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();

        int dividerTop = child.getBottom() + params.bottomMargin;
        int dividerBottom = dividerTop + mDivider.getIntrinsicHeight();

        mDivider.setBounds(dividerLeft, dividerTop, dividerRight, dividerBottom);
        mDivider.draw(canvas);
    }
}

Source File: SupportDividerItemDecoration.java From fangzhuishushenqi 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);
        android.support.v7.widget.RecyclerView v = new android.support.v7.widget.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);
    }
}

Source File: SpaceItemDecoration.java From FoodOrdering with Apache License 2.0

5 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;
        final int right = left + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

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

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);
    }
}

Source File: DividerItemDecoration.java From WiFiKeyShare 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);
    }
}

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

5 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;
        final int right = left + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Source File: ItemTouchUIUtilImpl.java From letv with Apache License 2.0

5 votes

private float findMaxElevation(RecyclerView recyclerView, View itemView) {
    int childCount = recyclerView.getChildCount();
    float max = 0.0f;
    for (int i = 0; i < childCount; i++) {
        View child = recyclerView.getChildAt(i);
        if (child != itemView) {
            float elevation = ViewCompat.getElevation(child);
            if (elevation > max) {
                max = elevation;
            }
        }
    }
    return max;
}

Source File: GridItemDividerDecoration.java From Simpler with Apache License 2.0

5 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);
    }
}

Source File: CircularUtils.java From CircularViewPager with MIT License

5 votes

/**
 * get the center RecyclerView
 *
 * @param recyclerView
 * @return
 */
public static View getCenterXChild(@NonNull 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;
}

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

5 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;
        final int right = left + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}

Source File: CardViewDecoration.java From recyclerviewItemDecorations with MIT License

4 votes

@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
    Rect bounds = new Rect();
    float edgeShadowTop = -mCornerRadius - mShadowSize;

    RecyclerView.LayoutManager lm = parent.getLayoutManager();
    float size16dp = 16f;
    int padding16dp = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, size16dp, parent.getContext().getResources().getDisplayMetrics());

    for (int i = 0; i < parent.getChildCount(); i++) {
        int save = c.save();

        // using decorated values, remove what we set before
        View child = parent.getChildAt(i);
        bounds.set(lm.getDecoratedLeft(child) + padding16dp - (int) mPadding,
                lm.getDecoratedTop(child),
                lm.getDecoratedRight(child) - padding16dp + (int) mPadding,
                lm.getDecoratedBottom(child));

        RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
        int position = params.getViewAdapterPosition();
        int viewType = parent.getAdapter().getItemViewType(position);


        if (viewType == HeaderItemTestAdapter.HEADER) {
            bounds.top = (int) (bounds.top + padding16dp - mPadding);

            // LT
            c.translate(bounds.left + mCornerRadius, bounds.top + mCornerRadius);
            c.drawPath(mCornerShadowPath, mCornerShadowPaint);
            c.drawRect(0, edgeShadowTop, bounds.width() - 2 * mCornerRadius, -mCornerRadius, mEdgeShadowPaint);

            // RT
            c.rotate(90f);
            c.translate(0, -bounds.width() + 2 * mCornerRadius);
            c.drawPath(mCornerShadowPath, mCornerShadowPaint);
            c.drawRect(0, edgeShadowTop, bounds.height() - mCornerRadius, -mCornerRadius, mEdgeShadowPaint);

            // LBorder
            c.rotate(180f);
            c.translate(-bounds.height(), -bounds.width() + 2 * mCornerRadius);
            c.drawRect(mCornerRadius, edgeShadowTop, bounds.height(), -mCornerRadius, mEdgeShadowPaint);


        } else {
            if (parent.getAdapter().getItemViewType(position + 1) == HeaderItemTestAdapter.HEADER) {
                bounds.bottom = (int) (bounds.bottom - padding16dp + mPadding);

                // last item before next header
                c.rotate(180f);
                c.translate(-bounds.left - bounds.width() + mCornerRadius, -bounds.top - bounds.height() + mCornerRadius);

                c.drawPath(mCornerShadowPath, mCornerShadowPaint);
                c.drawRect(0, edgeShadowTop, bounds.width() - 2 * mCornerRadius, -mCornerRadius, mEdgeShadowPaint);

                // RT / Right border
                c.rotate(90f);
                c.translate(0, -bounds.width() + 2 * mCornerRadius);
                c.drawPath(mCornerShadowPath, mCornerShadowPaint);
                c.drawRect(0, edgeShadowTop, bounds.height() - mCornerRadius, -mCornerRadius, mEdgeShadowPaint);

                // Left border
                c.rotate(180f);
                c.translate(-bounds.height(), -bounds.width() + 2 * mCornerRadius);
                c.drawRect(mCornerRadius, edgeShadowTop, bounds.height(), -mCornerRadius, mEdgeShadowPaint);
            } else {
                // Right border
                c.translate(bounds.left, bounds.top);
                c.rotate(90f);
                c.translate(0, -bounds.width() + mCornerRadius);
                c.drawRect(0, edgeShadowTop, bounds.height(), -mCornerRadius, mEdgeShadowPaint);

                // Left border
                c.rotate(180f);
                c.translate(-bounds.height(), -bounds.width() + 2 * mCornerRadius);
                c.drawRect(0, edgeShadowTop, bounds.height(), -mCornerRadius, mEdgeShadowPaint);
            }
        }
        c.restoreToCount(save);
    }
}

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