9.png中在同一方向上设置多个拉伸位置，在android studio中怎么弄出来？

Question

在网上看的文章，上方水平方向上可以有两个黑线，但是我在android studio中调不出来

Answer 1

Anyway, I have never seen anyone achieve excessive position stretching through 9.png. Just imagine if there is multi-position stretching, which position is stretched? Are the stretching ratios at multiple locations the same? …A series of questions arise.