关于GridView只显示一样的问题

如果GridView不管怎么改都只能显示一行的话，就重写GridView，自定义GridView：

public class MyGridView extends GridView {
    public MyGridView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public MyGridView(Context context) {
        super(context);
    }

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

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

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