解决了
我在布局文件的GridView属性里面加了纵向的边距就出现这种情况,不解
        <GridView
            android:id="@+id/date_item"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:horizontalSpacing="2dp"            android:stretchMode="columnWidth"
            android:gravity="center_vertical|center_horizontal" 
            android:numColumns="7">
<!--                         android:verticalSpacing="2dp"  -->
                                </GridView>