Android表单 - ＆＃34; error-snackbar＆＃34;履行

Question

如何实现这样的错误显示？

行为：在检查表单输入错误后，灰色＆＃34;错误小吃栏＆＃34;幻灯片在屏幕的顶部处打开。谷歌Material suggests it，但你怎么能真正建立这个？

（顺便说一下：我不认为，真正的小吃吧（顶级重力）是正确的解决方案。）

Answer 1

I created a textview with visibility initially set to gone. On error this textview becomes visible (with approriate error-text) and all other elements slide down automatically.