App crashes - Unable to start activity ComponentInfo

[KhoiHuynh]

• I have a MainActivity that implements BaseFragment.
• In my MainActivity, i have 3 fragments that all implement the BaseFragment. They are all navigated via the BottomNavigationView widget
• In one of my fragments, i create an activity when a user clicked a button"

val intent = Intent(activity, RentActivity::class.java)
            intent.putExtra("bundle", bundle)
            activity?.startActivity(intent)

• all is working fine so far
• In my new activity, i try opening a Dialog on a button click:

    private fun OpenDialog() {
        var dialog = Dialog(this)
        dialog.setContentView(R.layout.stripe_layout)
        var lp : WindowManager.LayoutParams = WindowManager.LayoutParams().apply {
            copyFrom(dialog.window.attributes)
            width = WindowManager.LayoutParams.MATCH_PARENT
            height = WindowManager.LayoutParams.WRAP_CONTENT
        }
        ...

• This is when the app crashes and gives me the following stacktrace:

2019-03-12 11:30:12.104 19906-19906/com.example.khoi.parkingapp E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.khoi.parkingapp, PID: 19906
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.khoi.parkingapp/com.example.khoi.parkingapp.activities.MainActivity}: java.lang.IllegalStateException: savedInstanceState.getSt…g(EXTRA_CURRENT_FRAGMENT) must not be null
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6669)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
     Caused by: java.lang.IllegalStateException: savedInstanceState.getSt…g(EXTRA_CURRENT_FRAGMENT) must not be null
        at com.ncapdevi.fragnav.FragNavController.restoreFromBundle(FragNavController.kt:792)
        at com.ncapdevi.fragnav.FragNavController.initialize(FragNavController.kt:187)
        at com.example.khoi.parkingapp.activities.MainActivity.onCreate(MainActivity.kt:180)
        at android.app.Activity.performCreate(Activity.java:7136)
        at android.app.Activity.performCreate(Activity.java:7127)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048) 
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78) 
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108) 
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808) 
        at android.os.Handler.dispatchMessage(Handler.java:106) 
        at android.os.Looper.loop(Looper.java:193) 
        at android.app.ActivityThread.main(ActivityThread.java:6669) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858) 

any help would be appreciated

[ncapdevi]

Hmm, I think you're doing something strange with your navigation. You say you're switching to a new Activity, but this error is coming from your MainActivity calling OnCreate again.

Also, can you verify which version of the library you are on?

[ncapdevi]

Haven't heard anything back, so closing this for now.