androidx.recyclerview.widget.RecyclerView#LayoutParams ( )源码实例Demo

下面列出了androidx.recyclerview.widget.RecyclerView#LayoutParams ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。

源代码1 项目： intra42 文件： ItemDecorationNotLast.java

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

    int childCount = parent.getAdapter().getItemCount();
    for (int i = 0; i < childCount; i++) {

        if (i == (childCount - 1)) {
            continue;
        }

        View child = parent.getChildAt(i);

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

        int top = child.getBottom() + params.bottomMargin;
        int bottom = top + mDivider.getIntrinsicHeight();

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

源代码2 项目： cv4j 文件： DividerGridItemDecoration.java

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);
    }
}

源代码3 项目： RecyclerViewExtensions 文件： DividerItemDecoration.java

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

    int childCount = parent.getChildCount();
    for (int i = 0; i < childCount; i++) {
        View child = parent.getChildAt(i);
        if (!hasDivider(parent, child)) {
            continue;
        }

        if (mDrawable.isStateful()) {
            mDrawable.setState(child.getDrawableState());
        }

        RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
        int left = child.getRight() + params.rightMargin + Math.round(child.getTranslationX());
        int right = left + mDrawable.getIntrinsicWidth();
        drawDivider(canvas, left, top, right, bottom, child.getAlpha());
    }
}

源代码4 项目： recyclerview-adapters 文件： GridPaddingItemDecorationBuilder.java

@Override
public void getItemOffsets(final Rect outRect, final View view, final RecyclerView parent, final RecyclerView.State state) {
    final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) view.getLayoutParams();

    if (!(params instanceof GridLayoutManager.LayoutParams)) return;

    final GridParams gridParams = GridParams.create(view);
    if (gridParams == null) return;

    final int position = gridParams.getPosition();
    final int spanSize = gridParams.getSpanSize();
    final int index = gridParams.getSpanIndex();

    if (spanSize < 1 || index < 0) return;
    if (!usePadding(position)) return;

    boolean useVerticalPadding = paddingType.equals(PaddingType.BOTH) || paddingType.equals(PaddingType.VERTICAL);

    outRect.top = useVerticalPadding ? padding / 2 : 0;
    outRect.bottom = useVerticalPadding ? padding / 2 : 0;
    outRect.left = getPaddingLeft(index, spanSize);
    outRect.right = getPaddingRight(index, spanSize);
}

源代码5 项目： DoraemonKit 文件： VerticalDividerItemDecoration.java

@Override
protected Rect getDividerBound(int position, RecyclerView parent, View child) {
    Rect bounds = new Rect(0, 0, 0, 0);
    int transitionX = (int) ViewCompat.getTranslationX(child);
    int transitionY = (int) ViewCompat.getTranslationY(child);
    RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
    bounds.top = child.getTop() + transitionY;
    bounds.bottom = child.getBottom() + transitionY;

    int dividerSize = getDividerSize(position, parent);
    if (mDividerType == DividerType.DRAWABLE || mDividerType == DividerType.SPACE) {
        if (alignTopEdge(parent, position)) {
            bounds.top += mMarginProvider.dividerTopMargin(position, parent);
        }
        if (alignBottomEdge(parent, position)) {
            bounds.bottom -= mMarginProvider.dividerBottomMargin(position, parent);
        }

        bounds.left = child.getRight() + params.rightMargin + transitionX;
        bounds.right = bounds.left + dividerSize;
    } else {
        // set center point of divider
        int halfSize = dividerSize / 2;
        bounds.left = child.getRight() + params.rightMargin + halfSize + transitionX;
        bounds.right = bounds.left;
    }

    if (mPositionInsideItem) {
        bounds.left -= dividerSize;
        bounds.right -= dividerSize;
    }

    return bounds;
}

源代码6 项目： CardSlideView 文件： CardSlideView.java

@NonNull
@Override
public CardViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    final Context context = parent.getContext();
    final View view = mHolder.onCreateView(LayoutInflater.from(context), parent);
    RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) view.getLayoutParams();
    if (mOrientation == LinearLayout.HORIZONTAL) {
        params.width = Math.round(parent.getMeasuredWidth() / (mSideOffsetPercent * 2 + 1));
        params.height = Math.round(params.width * mItemRate);
    } else {
        params.height = Math.round(parent.getMeasuredHeight() / (mSideOffsetPercent * 2 + 1));
        params.width = Math.round(params.height / mItemRate);
    }
    return new CardViewHolder(view);
}

源代码7 项目： Android-nRF-Toolbox 文件： DividerItemDecoration.java

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 + divider.getIntrinsicHeight();
        divider.setBounds(left, top, right, bottom);
        divider.draw(c);
    }
}

源代码8 项目： MyBookshelf 文件： DividerItemDecoration.java

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 + mDrawable.getIntrinsicHeight();
        mDrawable.setBounds(left, top, right, bottom);
        mDrawable.draw(c);
    }
}

源代码9 项目： FChat 文件： DividerItemDecoration.java

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);
    }
}

源代码10 项目： DoraemonKit 文件： HorizontalDividerItemDecoration.java

@Override
protected Rect getDividerBound(int position, RecyclerView parent, View child) {
    Rect bounds = new Rect(0, 0, 0, 0);
    int transitionX = (int) ViewCompat.getTranslationX(child);
    int transitionY = (int) ViewCompat.getTranslationY(child);
    RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child.getLayoutParams();
    bounds.left = child.getLeft() + transitionX;
    bounds.right = child.getRight() + transitionX;

    int dividerSize = getDividerSize(position, parent);
    if (mDividerType == DividerType.DRAWABLE || mDividerType == DividerType.SPACE) {
        if (alignLeftEdge(parent, position)) {
            bounds.left += mMarginProvider.dividerLeftMargin(position, parent);
        }

        if (alignRightEdge(parent, position)) {
            bounds.right -= mMarginProvider.dividerRightMargin(position, parent);
        } else {
            // 交叉位置特殊处理
            bounds.right += getDividerSize(position, parent);
        }
        bounds.top = child.getBottom() + params.bottomMargin + transitionY;
        bounds.bottom = bounds.top + dividerSize;
    } else {
        int halfSize = dividerSize / 2;
        bounds.top = child.getBottom() + params.bottomMargin + halfSize + transitionY;
        bounds.bottom = bounds.top;
    }

    if (mPositionInsideItem) {
        bounds.top -= dividerSize;
        bounds.bottom -= dividerSize;
    }

    return bounds;
}

源代码11 项目： FastAdapter 文件： ColorItemDecoration.java

private void drawHorizontal(Canvas canvas, RecyclerView parent) {
  final int left = parent.getPaddingLeft();
  final int right = parent.getMeasuredWidth() - parent.getPaddingRight();
  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 top = child.getBottom() + layoutParams.bottomMargin;
    final int bottom = top + mDividerHeight;
    if (mPaint != null) {
      canvas.drawRect(left + mMarginLeft, top, right, bottom, mPaint);
    }
  }
}

源代码12 项目： TableView 文件： TableViewUtils.java

/**
 * Helps to force width value before calling requestLayout by the system.
 */
public static void setWidth(@NonNull View view, int width) {
    // Change width value from params
    ((RecyclerView.LayoutParams) view.getLayoutParams()).width = width;

    int widthMeasureSpec = View.MeasureSpec.makeMeasureSpec(width, View.MeasureSpec.EXACTLY);
    int heightMeasureSpec = View.MeasureSpec.makeMeasureSpec(view.getMeasuredHeight(), View
            .MeasureSpec.EXACTLY);
    view.measure(widthMeasureSpec, heightMeasureSpec);

    view.requestLayout();
}

源代码13 项目： GeometricWeather 文件： TrendHorizontalLinearLayoutManager.java

@Override
public RecyclerView.LayoutParams generateDefaultLayoutParams() {
    if (fillCount > 0) {
        int minWidth = (int) DisplayUtils.dpToPx(context, MIN_ITEM_WIDTH);
        int minHeight = (int) DisplayUtils.dpToPx(context, MIN_ITEM_HEIGHT);
        return new RecyclerView.LayoutParams(
                Math.max(minWidth, getWidth() / fillCount),
                getHeight() > minHeight ? ViewGroup.LayoutParams.MATCH_PARENT : minHeight
        );
    } else {
        return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
    }
}

源代码14 项目： RvHelper 文件： DividerGridItemDecoration.java

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);
    }
}

源代码15 项目： GeometricWeather 文件： TrendHorizontalLinearLayoutManager.java

@Override
public RecyclerView.LayoutParams generateLayoutParams(Context c, AttributeSet attrs) {
    return generateDefaultLayoutParams();
}

源代码16 项目： a 文件： GridSpacingItemDecoration.java

/***/
private void drawGrideview1(Canvas canvas, RecyclerView parent) {
    GridLayoutManager linearLayoutManager = (GridLayoutManager) parent.getLayoutManager();
    int childSize = parent.getChildCount();
    int top, bottom, left, right, spancount;
    spancount = linearLayoutManager.getSpanCount();
    for (int i = 0; i < childSize; i++) {
        final View child = parent.getChildAt(i);
        //画横线
        RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) child.getLayoutParams();
        top = child.getBottom() + layoutParams.bottomMargin;
        bottom = top + space;
        left = layoutParams.leftMargin + child.getPaddingLeft() + space;
        right = child.getMeasuredWidth() * (i + 1) + left + space * i;
        if (mDivider != null) {
            mDivider.setBounds(left, top, right, bottom);
            mDivider.draw(canvas);
        }
        if (mPaint != null) {
            canvas.drawRect(left, top, right, bottom, mPaint);
        }
        //画竖线
        top = (layoutParams.topMargin + space) * (i / linearLayoutManager.getSpanCount() + 1);
        bottom = (child.getMeasuredHeight() + space) * (i / linearLayoutManager.getSpanCount() + 1) + space;
        left = child.getRight() + layoutParams.rightMargin;
        right = left + space;
        if (mDivider != null) {
            mDivider.setBounds(left, top, right, bottom);
            mDivider.draw(canvas);
        }
        if (mPaint != null) {
            canvas.drawRect(left, top, right, bottom, mPaint);
        }

        //画上缺失的线框
        if (i < spancount) {
            top = child.getTop() + layoutParams.topMargin;
            bottom = top + space;
            left = (layoutParams.leftMargin + space) * (i + 1);
            right = child.getMeasuredWidth() * (i + 1) + left + space * i;
            if (mDivider != null) {
                mDivider.setBounds(left, top, right, bottom);
                mDivider.draw(canvas);
            }
            if (mPaint != null) {
                canvas.drawRect(left, top, right, bottom, mPaint);
            }
        }
        if (i % spancount == 0) {
            top = (layoutParams.topMargin + space) * (i / linearLayoutManager.getSpanCount() + 1);
            bottom = (child.getMeasuredHeight() + space) * (i / linearLayoutManager.getSpanCount() + 1) + space;
            left = child.getLeft() + layoutParams.leftMargin;
            right = left + space;
            if (mDivider != null) {
                mDivider.setBounds(left, top, right, bottom);
                mDivider.draw(canvas);
            }
            if (mPaint != null) {
                canvas.drawRect(left, top, right, bottom, mPaint);
            }
        }
    }
}

源代码17 项目： CardSlideView 文件： GalleryLayoutManager.java

@Override
public RecyclerView.LayoutParams generateLayoutParams(Context c, AttributeSet attrs) {
    return new LayoutParams(c, attrs);
}

源代码18 项目： OmegaRecyclerView 文件： ExpandableLayoutManager.java

@Override
public RecyclerView.LayoutParams generateDefaultLayoutParams() {
    return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
}

源代码19 项目： Telegram 文件： FillLastGridLayoutManager.java

@SuppressWarnings("unchecked")
private void calcLastItemHeight() {
    if (listHeight <= 0 || !shouldCalcLastItemHeight()) {
        return;
    }
    RecyclerView.Adapter adapter = listView.getAdapter();
    if (adapter == null) {
        return;
    }
    int spanCount = getSpanCount();
    int spanCounter = 0;
    int count = adapter.getItemCount() - 1;
    int allHeight = 0;
    final SpanSizeLookup spanSizeLookup = getSpanSizeLookup();
    for (int a = 0; a < count; a++) {
        final int spanSize = spanSizeLookup.getSpanSize(a);
        spanCounter += spanSize;

        if (spanSize == spanCount || spanCounter > spanCount) {
            spanCounter = 0;
        } else if (spanCounter != 1) {
            continue;
        }

        int type = adapter.getItemViewType(a);
        RecyclerView.ViewHolder holder = heights.get(type, null);
        if (holder == null) {
            holder = adapter.createViewHolder(listView, type);
            heights.put(type, holder);
            if (holder.itemView.getLayoutParams() == null) {
                holder.itemView.setLayoutParams(generateDefaultLayoutParams());
            }
        }
        adapter.onBindViewHolder(holder, a);

        final RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams) holder.itemView.getLayoutParams();
        final int widthSpec = getChildMeasureSpec(listWidth, getWidthMode(), getPaddingLeft() + getPaddingRight() + lp.leftMargin + lp.rightMargin, lp.width, canScrollHorizontally());
        final int heightSpec = getChildMeasureSpec(listHeight, getHeightMode(), getPaddingTop() + getPaddingBottom() + lp.topMargin + lp.bottomMargin, lp.height, canScrollVertically());
        holder.itemView.measure(widthSpec, heightSpec);
        allHeight += holder.itemView.getMeasuredHeight();
        if (allHeight >= (listHeight - additionalHeight - listView.getPaddingBottom())) {
            break;
        }
    }
    lastItemHeight = Math.max(0, listHeight - allHeight - additionalHeight - listView.getPaddingBottom());
}

源代码20 项目： CommonUtils 文件： CommonUtils.java

public static void setRecyclerViewTopMargin(@NonNull RecyclerView.ViewHolder holder) {
    if (holder.itemView.getLayoutParams() == null) return;

    Context context = holder.itemView.getContext();
    ((RecyclerView.LayoutParams) holder.itemView.getLayoutParams()).topMargin = holder.getLayoutPosition() == 0 ? (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 8, context.getResources().getDisplayMetrics()) : 0;
}

方法所在类

androidx.recyclerview.widget.RecyclerView