android AppBarLayout 布局阴影去不掉的问题

<p><span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px;">其实这个问题解决挺简单的，就是设置&nbsp;</span><span style="outline: 0px; overflow-wrap: break-word; font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px; color: rgb(51, 102, 255);">elevation=”0dp“</span><span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px;">，但是很多人设置了确没有用。这是为什么呢？</span><br></p><p><span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px;"><br></span></p><p><span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px;">重要的事情说三遍，完整的属性设置为：</span><span style="outline: 0px; overflow-wrap: break-word; font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px; color: rgb(51, 102, 255);">app：elevation = ”0dp“</span><span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px;">，</span><span style="outline: 0px; overflow-wrap: break-word; font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px; color: rgb(51, 102, 255);">app：elevation = ”0dp“</span><span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px;">，</span><span style="outline: 0px; overflow-wrap: break-word; font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px; color: rgb(51, 102, 255);">app：elevation = ”0dp“</span><span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px;">，而不是：android：elevation=”0dp“。</span><span style="color: rgb(77, 77, 77); font-family: -apple-system, &quot;SF UI Text&quot;, Arial, &quot;PingFang SC&quot;, &quot;Hiragino Sans GB&quot;, &quot;Microsoft YaHei&quot;, &quot;WenQuanYi Micro Hei&quot;, sans-serif, SimHei, SimSun; font-size: 16px;"><br></span></p>