关于GridView只显示一行的问题

 需要重写GridView控件，具体代码如下

 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 = MeasureSpec.makeMeasureSpec(
                    Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);

            super.onMeasure(widthMeasureSpec, expandSpec);
        }
    }