Java RecyclerView.LayoutParams方法代码示例

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
protected void handleStateOnResult(LayoutChunkResult result, View view) {
    if (view == null) {
        return;
    }

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

    // Consume the available space if the view is not removed OR changed
    if (params.isItemRemoved() || params.isItemChanged()) {
        result.mIgnoreConsumed = true;
    }

    // used when search a focusable view
    result.mFocusable = result.mFocusable || view.isFocusable();

}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
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);
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
private void measureScrapChild(RecyclerView.Recycler recycler, int position, int widthSpec,
                               int heightSpec, int[] measuredDimension) {
    try {
        View view = recycler.getViewForPosition(0);//fix 动态添加时报IndexOutOfBoundsException

        if (view != null) {
            RecyclerView.LayoutParams p = (RecyclerView.LayoutParams) view.getLayoutParams();

            int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec,
                    getPaddingLeft() + getPaddingRight(), p.width);

            int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec,
                    getPaddingTop() + getPaddingBottom(), p.height);

            view.measure(childWidthSpec, childHeightSpec);
            measuredDimension[0] = view.getMeasuredWidth() + p.leftMargin + p.rightMargin;
            measuredDimension[1] = view.getMeasuredHeight() + p.bottomMargin + p.topMargin;
            recycler.recycleView(view);
        }
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
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);
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
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++) {
        if (!needDrawDecoration(parent, i)) {
            continue;
        }
        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);
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
/**
 * Draw dividers at each expected grid interval
 */
public void drawVertical(Canvas c, RecyclerView parent) {
    if (parent.getChildCount() == 0) return;

    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 - mInsets;
        final int right = child.getRight() + params.rightMargin + mInsets;
        final int top = child.getBottom() + params.bottomMargin + mInsets;
        final int bottom = top + mDivider.getIntrinsicHeight();
        mDivider.setBounds(left, top, right, bottom);
        mDivider.draw(c);
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
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);
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
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);
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
/**
 * 通过反射获取RecyclerView的item的topInset
 *
 * @param layoutParams
 * @return
 */
private static int getRecyclerViewItemTopInset(RecyclerView.LayoutParams layoutParams) {
    try {
        Field field = RecyclerView.LayoutParams.class.getDeclaredField("mDecorInsets");
        field.setAccessible(true);
        // 开发者自定义的滚动监听器
        Rect decorInsets = (Rect) field.get(layoutParams);
        return decorInsets.top;
    } catch (Exception e) {
        e.printStackTrace();
    }
    return 0;
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
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);
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
public void drawHorizontal(Canvas c, RecyclerView parent) {
    final int top = parent.getPaddingTop();
    final int bottom = parent.getHeight() - parent.getPaddingBottom();

    int childCount = parent.getChildCount();

    for (int i = 0; i < childCount; i++) {
        final View child = parent.getChildAt(i);
        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);
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
@Override
void drawHorizontalOrientationDividers(Canvas c, RecyclerView parent,
                                       RecyclerView.LayoutManager layoutManager) {
    LinearLayoutManager manager = (LinearLayoutManager) layoutManager;
    int childCount = parent.getChildCount();
    float left, top, right, bottom;
    for (int i = 0; i < childCount; i++) {
        View view = parent.getChildAt(i);
        RecyclerView.LayoutParams lp = (RecyclerView.LayoutParams) view.getLayoutParams();
        int position = lp.getViewAdapterPosition();
        if (position < 0 || !mProvider.isDividerNeedDraw(position))
            continue;
        float transitionX = ViewCompat.getTranslationX(view);
        float transitionY = ViewCompat.getTranslationY(view);
        top = view.getTop() - lp.topMargin + transitionY + mProvider.marginStart(position);
        bottom = view.getBottom() + lp.bottomMargin + transitionY - mProvider.marginEnd(position);
        IDivider divider = mProvider.createDivider(position);
        if (manager.getReverseLayout()) {
            if (divider.getType() == IDivider.TYPE_DRAWABLE) {
                right = view.getLeft() - lp.leftMargin + transitionX;
                left = right - divider.getDividerSize();
            } else {
                left = view.getLeft() - lp.leftMargin - divider.getDividerSize() / 2f + transitionY;
                right = left;
            }
            if (mDrawInsideEachOfItem) {
                left += divider.getDividerSize();
                right += divider.getDividerSize();
            }
        } else {
            if (divider.getType() == IDivider.TYPE_DRAWABLE) {
                left = view.getRight() + lp.rightMargin + transitionX;
                right = left + divider.getDividerSize();
            } else {
                left = view.getRight() + lp.rightMargin + divider.getDividerSize() / 2f + transitionX;
                right = left;
            }
            if (mDrawInsideEachOfItem) {
                left -= divider.getDividerSize();
                right -= divider.getDividerSize();
            }
        }
        divider.draw(c, left, top, right, bottom);
    }
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
@Override
public RecyclerView.LayoutParams generateDefaultLayoutParams() {
    return new RecyclerView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
            ViewGroup.LayoutParams.WRAP_CONTENT);
}
 

import android.support.v7.widget.RecyclerView; //导入方法依赖的package包/类
@Override
public RecyclerView.LayoutParams generateLayoutParams(Context c, AttributeSet attrs) {
    return new InflateLayoutParams(c, attrs);
}