According to the official Android Design Documentation,可触摸的UI组件应至少高48 dp,宽度至少为48 dp
On average, 48dp translate to a physical size of about 9mm (with some variability). This is comfortably in the range of recommended target sizes (7-10 mm) for touchscreen objects and users will be able to reliably and accurately target them with their fingers..
虽然此处的图像显示项目包含在48dp行中,但UI组件的实际边界下降幅度小于(铅笔图标最大值为32 dp,按钮最大值为40 dp(垂直))。此图像是否与我解释信息的方式不同?
除此之外,设计文档表明可触摸的UI组件应彼此间隔8dp。但是,操作栏中的项目在它们之间的可触摸区域之间没有8db的间距。以下是官方Gmail应用中操作栏项的屏幕截图。
事实上,我无法想到任何实际上在UI组件之间只有8dp空间的谷歌应用程序。我误解了这些指导方针吗?项目之间是否应该没有边距空间,只是填充空间?