Example usage for android.view ViewGroup getChildMeasureSpec

Introduction

In this page you can find the example usage for android.view ViewGroup getChildMeasureSpec.

Prototype

public static int getChildMeasureSpec(int spec, int padding, int childDimension) 

Source Link

Document

Does the hard part of measureChildren: figuring out the MeasureSpec to pass to a particular child.

Usage

From source file:ca.barrenechea.widget.recyclerview.decoration.StickyHeaderDecoration.java

private RecyclerView.ViewHolder getHeader(RecyclerView parent, int position) {
    final long key = mAdapter.getHeaderId(position);

    if (mHeaderCache.containsKey(key)) {
        return mHeaderCache.get(key);
    } else {/*from   w w w.  jav  a  2s.c o m*/
        final RecyclerView.ViewHolder holder = mAdapter.onCreateHeaderViewHolder(parent);
        final View header = holder.itemView;

        //noinspection unchecked
        mAdapter.onBindHeaderViewHolder(holder, position);

        int widthSpec = View.MeasureSpec.makeMeasureSpec(parent.getMeasuredWidth(), View.MeasureSpec.EXACTLY);
        int heightSpec = View.MeasureSpec.makeMeasureSpec(parent.getMeasuredHeight(),
                View.MeasureSpec.UNSPECIFIED);

        int childWidth = ViewGroup.getChildMeasureSpec(widthSpec,
                parent.getPaddingLeft() + parent.getPaddingRight(), header.getLayoutParams().width);
        int childHeight = ViewGroup.getChildMeasureSpec(heightSpec,
                parent.getPaddingTop() + parent.getPaddingBottom(), header.getLayoutParams().height);

        header.measure(childWidth, childHeight);
        header.layout(0, 0, header.getMeasuredWidth(), header.getMeasuredHeight());

        mHeaderCache.put(key, holder);

        return holder;
    }
}

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From source file:cn.lanmei.com.dingdong_2.ItemDecoration.StickyHeaderDecoration.java

private RecyclerView.ViewHolder getHeader(RecyclerView parent, int position) {

    final long key = mAdapter.getHeaderId(position);

    if (mHeaderCache.containsKey(key)) {
        return mHeaderCache.get(key);
    } else {/* w  w w .ja va 2s.com*/

        final RecyclerView.ViewHolder holder = mAdapter.onCreateHeaderViewHolder(parent);
        final View header = holder.itemView;

        //noinspection unchecked
        mAdapter.onBindHeaderViewHolder(holder, position);

        int widthSpec = View.MeasureSpec.makeMeasureSpec(parent.getWidth(), View.MeasureSpec.EXACTLY);
        int heightSpec = View.MeasureSpec.makeMeasureSpec(parent.getHeight(), View.MeasureSpec.UNSPECIFIED);

        int childWidth = ViewGroup.getChildMeasureSpec(widthSpec,
                parent.getPaddingLeft() + parent.getPaddingRight(), header.getLayoutParams().width);
        int childHeight = ViewGroup.getChildMeasureSpec(heightSpec,
                parent.getPaddingTop() + parent.getPaddingBottom(), header.getLayoutParams().height);

        header.measure(childWidth, childHeight);
        header.layout(0, 0, header.getMeasuredWidth(), header.getMeasuredHeight());

        mHeaderCache.put(key, holder);

        return holder;
    }

}

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From source file:ca.barrenechea.widget.recyclerview.decoration.DoubleHeaderDecoration.java

private void measureView(RecyclerView parent, View header) {
    int widthSpec = View.MeasureSpec.makeMeasureSpec(parent.getWidth(), View.MeasureSpec.EXACTLY);
    int heightSpec = View.MeasureSpec.makeMeasureSpec(parent.getHeight(), View.MeasureSpec.UNSPECIFIED);

    int childWidth = ViewGroup.getChildMeasureSpec(widthSpec,
            parent.getPaddingLeft() + parent.getPaddingRight(), header.getLayoutParams().width);
    int childHeight = ViewGroup.getChildMeasureSpec(heightSpec,
            parent.getPaddingTop() + parent.getPaddingBottom(), header.getLayoutParams().height);

    header.measure(childWidth, childHeight);
    header.layout(0, 0, header.getMeasuredWidth(), header.getMeasuredHeight());
}

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From source file:com.charon.materialsample.view.ScrollingTabs.java

public static void measureView(View view) {
    ViewGroup.LayoutParams lp = view.getLayoutParams();
    if (lp == null) {
        lp = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
    }/*from   w w  w.  java  2 s .  c  o m*/

    int childMeasureWidth = ViewGroup.getChildMeasureSpec(0, 0, lp.width);
    int childMeasureHeight;
    if (lp.height > 0) {
        childMeasureHeight = MeasureSpec.makeMeasureSpec(lp.height, MeasureSpec.EXACTLY);
    } else {
        // Measure specification mode: The parent has not imposed any
        // constraint on the child. It can be whatever size it wants.
        childMeasureHeight = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
    }
    view.measure(childMeasureWidth, childMeasureHeight);
}

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From source file:com.ftinc.kit.attributr.ui.widget.StickyRecyclerHeadersElevationDecoration.java

/**
 * Gets the header view for the associated position.  If it doesn't exist yet, it will be
 * created, measured, and laid out.//from  w w w .ja va2  s . c om
 * @param parent
 * @param position
 * @return Header view
 */
public View getHeaderView(RecyclerView parent, int position) {
    long headerId = mAdapter.getHeaderId(position);

    RecyclerView.ViewHolder viewHolder = mHeaderViews.get(headerId);
    if (viewHolder == null) {

        viewHolder = mAdapter.onCreateHeaderViewHolder(parent);
        View header = viewHolder.itemView;
        header.setTag(viewHolder);

        if (header.getLayoutParams() == null) {

            header.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT));

        }

        int widthSpec;
        int heightSpec;

        if (getOrientation(parent) == LinearLayoutManager.VERTICAL) {
            widthSpec = View.MeasureSpec.makeMeasureSpec(parent.getWidth(), View.MeasureSpec.EXACTLY);
            heightSpec = View.MeasureSpec.makeMeasureSpec(parent.getHeight(), View.MeasureSpec.UNSPECIFIED);
        } else {
            widthSpec = View.MeasureSpec.makeMeasureSpec(parent.getWidth(), View.MeasureSpec.UNSPECIFIED);
            heightSpec = View.MeasureSpec.makeMeasureSpec(parent.getHeight(), View.MeasureSpec.EXACTLY);
        }

        int childWidth = ViewGroup.getChildMeasureSpec(widthSpec,
                parent.getPaddingLeft() + parent.getPaddingRight(), header.getLayoutParams().width);
        int childHeight = ViewGroup.getChildMeasureSpec(heightSpec,
                parent.getPaddingTop() + parent.getPaddingBottom(), header.getLayoutParams().height);
        header.measure(childWidth, childHeight);
        header.layout(0, 0, header.getMeasuredWidth(), header.getMeasuredHeight());
        mHeaderViews.put(headerId, viewHolder);
    }

    // Rebind content to the view holder
    mAdapter.onBindHeaderViewHolder(viewHolder, position);

    return viewHolder.itemView;
}

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From source file:com.library.core.view.HorizontalListView.java

private void addAndMeasureChild(final View child, int viewPos) {
    LayoutParams params = (LayoutParams) child.getLayoutParams();
    params = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.MATCH_PARENT);

    addViewInLayout(child, viewPos, params, true);

    int heightMeasureSpec = MeasureSpec.makeMeasureSpec(getMeasuredHeight(), MeasureSpec.EXACTLY);
    int childHeightSpec = ViewGroup.getChildMeasureSpec(heightMeasureSpec, getPaddingTop() + getPaddingBottom(),
            params.height);//from ww  w. jav a 2 s .  c  o  m
    int childWidthSpec = MeasureSpec.makeMeasureSpec(params.width > 0 ? params.width : 0,
            MeasureSpec.UNSPECIFIED);
    child.measure(childWidthSpec, childHeightSpec);

}

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From source file:com.android.yijiang.kzx.widget.tab.PagerSlidingTabStrip.java

/**
 * ????ViewgetMeasuredXXX()????/*from w  w  w. j  a  v a  2s. c  o  m*/
 */
private View measure(View view) {
    ViewGroup.LayoutParams p = view.getLayoutParams();
    if (p == null) {
        p = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
    }
    int childWidthSpec = ViewGroup.getChildMeasureSpec(0, 0, p.width);
    int lpHeight = p.height;
    int childHeightSpec;
    if (lpHeight > 0) {
        childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight, MeasureSpec.EXACTLY);
    } else {
        childHeightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
    }
    view.measure(childWidthSpec, childHeightSpec);
    return view;
}

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From source file:com.actionbarsherlock.internal.widget.IcsSpinner.java

/**
 * Helper for makeAndAddView to set the position of a view
 * and fill out its layout paramters./*from w  w  w .j  av a 2  s.  c  o m*/
 *
 * @param child The view to position
 */
private void setUpChild(View child) {

    // Respect layout params that are already in the view. Otherwise
    // make some up...
    ViewGroup.LayoutParams lp = child.getLayoutParams();
    if (lp == null) {
        lp = generateDefaultLayoutParams();
    }

    addViewInLayout(child, 0, lp);

    child.setSelected(hasFocus());
    if (mDisableChildrenWhenDisabled) {
        child.setEnabled(isEnabled());
    }

    // Get measure specs
    int childHeightSpec = ViewGroup.getChildMeasureSpec(mHeightMeasureSpec,
            mSpinnerPadding.top + mSpinnerPadding.bottom, lp.height);
    int childWidthSpec = ViewGroup.getChildMeasureSpec(mWidthMeasureSpec,
            mSpinnerPadding.left + mSpinnerPadding.right, lp.width);

    // Measure child
    child.measure(childWidthSpec, childHeightSpec);

    int childLeft;
    int childRight;

    // Position vertically based on gravity setting
    int childTop = mSpinnerPadding.top
            + ((getMeasuredHeight() - mSpinnerPadding.bottom - mSpinnerPadding.top - child.getMeasuredHeight())
                    / 2);
    int childBottom = childTop + child.getMeasuredHeight();

    int width = child.getMeasuredWidth();
    childLeft = 0;
    childRight = childLeft + width;

    child.layout(childLeft, childTop, childRight, childBottom);
}

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From source file:com.gome.haoyuangong.views.MyViewPageIndicator.java

private void measureView(View child) {
    ViewGroup.LayoutParams p = child.getLayoutParams();
    if (p == null) {
        p = new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
    }/*from  www .  j a  v  a2  s .  co m*/
    int childWidthSpec = ViewGroup.getChildMeasureSpec(0, 0 + 0, p.width);
    int lpHeight = p.height;
    int childHeightSpec;
    if (lpHeight > 0) {
        childHeightSpec = MeasureSpec.makeMeasureSpec(lpHeight, MeasureSpec.EXACTLY);
    } else {
        childHeightSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
    }
    child.measure(childWidthSpec, childHeightSpec);
}

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From source file:com.icloud.listenbook.base.view.DraggableGridViewPager.java

private void measureScrapChild(int position, int widthSpec, int heightSpec, int[] measuredDimension) {
    if (position < getChildCount()) {
        View child = getChildAt(position);

        if (child != null) {
            ViewGroup.LayoutParams p = (ViewGroup.LayoutParams) child.getLayoutParams();

            int childWidthSpec = ViewGroup.getChildMeasureSpec(widthSpec, getPaddingLeft() + getPaddingRight(),
                    p.width);//from w  ww  .  j  a  v a 2  s . c  o m
            int childHeightSpec = ViewGroup.getChildMeasureSpec(heightSpec,
                    getPaddingTop() + getPaddingBottom(), p.height);
            child.measure(childWidthSpec, childHeightSpec);
            measuredDimension[0] = child.getMeasuredWidth();
            measuredDimension[1] = child.getMeasuredHeight();

        }

    }
}

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