I have an image, .jpg, that I am using as my cover image for this project. It works perfectly on desktop but I can't see anything on it for mobile devices. I don't know if it's zoomed in or not but I can't see an image but instead of a color gradient as th...

我正在从AntD转到MaterialUI，无法弄清楚如何轻松实现表单验证和表单提交而无需重新加载整个页面。 As an example, upon clicking "sign in" the whole page reloads, which isn't a good idea with an SPA app. 我可以通过将handleFunction从元素移动到元素的onClick函数并从Button中删除type =“ submit”来避免重新加载整个页面，从而绕过它。可以，但是删除了验证，并且删除...

在“我的底部”导航栏中，我正在使用菜单xml中的图标，选中后，图标的颜色会随着主题颜色而改变。 在选项卡后，单击图标，完全更改[此处的图像链接描述] [2] 我完全陷入了为什么这与png图像一起发生 底部导航 <com.google.android.material.bottomnavigation.BottomNavigationView android:id="@+id/navigation" android:layout_width="match_parent" ...