自定义类继承listview/gridview

注意item中控件的高要设为固定值

@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

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

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