listview 嵌套在ScrollView，或者其他可滾動的view中，展示不全

import android.content.Context;
import android.util.AttributeSet;
import android.widget.ListView;

/**
 * Created by reading on 2016/1/4.
 */

public class NoScrollListView extends ListView {
    public NoScrollListView(Context context) {
        super(context);
    }

    public NoScrollListView(Context context, AttributeSet as) {
        super(context, as);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
        super.onMeasure(widthMeasureSpec, expandSpec);
    }
}