ExpandableHeightGridView

package net.prunusumume.sample.views;

import android.content.Context;
import android.util.AttributeSet;
import android.view.ViewGroup;
import android.widget.GridView;

/**
 * ScrollViewに入れても２行以上表示することができるGridView
 * http://stackoverflow.com/questions/8481844/gridview-height-gets-cut
 */
public class ExpandableHeightGridView extends GridView {

    private boolean mExpanded = false;

    public ExpandableHeightGridView(final Context context) {
        super(context);
    }

    public ExpandableHeightGridView(final Context context, final AttributeSet attrs) {
        super(context, attrs);
    }

    public ExpandableHeightGridView(final Context context, final AttributeSet attrs, final int defStyle) {
        super(context, attrs, defStyle);
    }

    public boolean isExpanded() {
        return mExpanded;
    }

    public void setExpanded(final boolean expanded) {
        mExpanded = expanded;
    }

    @Override
    protected void onMeasure(final int widthMeasureSpec, final int heightMeasureSpec) {
        if (!isExpanded()) {
            super.onMeasure(widthMeasureSpec, heightMeasureSpec);
            return;
        }

        final int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);

        final ViewGroup.LayoutParams params = getLayoutParams();
        params.height = getMeasuredHeight();
    }
}