IssueTracker

BottomNavigationView is crashing when creating the view and adding menu items programatically. Stacktrace below along with sample project. Tested that crash is occurring on API 24 and API 19 (only tested on them, assuming happening on others). This style of programmatically adding works fine on something like NavigationView:

Version info:
buildTools - 25.0.0
compile/targetSDK - 25
appCompat/design support lib: 25.0.0


10-20 11:26:45.523 4417-4417/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: atownsend.sampleproject, PID: 4417
java.lang.RuntimeException: Unable to start activity ComponentInfo{atownsend.sampleproject/atownsend.sampleproject.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.support.v7.view.menu.MenuBuilder.size()' on a null object reference
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2646)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707)
    at android.app.ActivityThread.-wrap12(ActivityThread.java)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:6077)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
 Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.support.v7.view.menu.MenuBuilder.size()' on a null object reference
    at android.support.design.internal.BottomNavigationMenuView.buildMenuView(BottomNavigationMenuView.java:231)
    at android.support.design.internal.BottomNavigationPresenter.updateMenuView(BottomNavigationPresenter.java:59)
    at android.support.v7.view.menu.MenuBuilder.dispatchPresenterUpdate(MenuBuilder.java:290)
    at android.support.v7.view.menu.MenuBuilder.onItemsChanged(MenuBuilder.java:1042)
    at android.support.v7.view.menu.MenuBuilder.addInternal(MenuBuilder.java:450)
    at android.support.design.internal.BottomNavigationMenu.addInternal(BottomNavigationMenu.java:50)
    at android.support.v7.view.menu.MenuBuilder.add(MenuBuilder.java:473)
    at atownsend.sampleproject.MainActivity.onCreate(MainActivity.java:16)
    at android.app.Activity.performCreate(Activity.java:6664)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2599)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2707) 
    at android.app.ActivityThread.-wrap12(ActivityThread.java) 
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1460) 
    at android.os.Handler.dispatchMessage(Handler.java:102) 
    at android.os.Looper.loop(Looper.java:154) 
    at android.app.ActivityThread.main(ActivityThread.java:6077) 
    at java.lang.reflect.Method.invoke(Native Method) 
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)