Navigation component no transitions to select in drop down

问题

I created navigation folder and navigation .xml file but in the navigation component under Animations->Enter there is no animations to choose from.

回答1:

In the gradle you should add those lines under dependencies:

def nav_version = "1.0.0-rc02"
    implementation "android.arch.navigation:navigation-fragment:$nav_version"
    implementation "android.arch.navigation:navigation-ui:$nav_version"

来源：https://stackoverflow.com/questions/55185964/navigation-component-no-transitions-to-select-in-drop-down