重写listview/gridview 的onMeasure方法，解决与ScrollView的冲突

自定义类继承listview/gridview

****注意item中控件的高要设为固定值

    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        // TODO Auto-generated method stub        int expandSpec = MeasureSpec.makeMeasureSpec(                Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);        super.onMeasure(widthMeasureSpec, expandSpec);    }