Android Question Firebase Database Error

BarryW

BarryW

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Longtime User
When i pressed the back button then i resume the app i get this error

B4X: 
com.google.firebase.database.DatabaseException: Calls to setPersistenceEnabled() must be made before any other usage of FirebaseDatabase instance.
    at com.google.firebase.database.FirebaseDatabase.zziE(Unknown Source)
    at com.google.firebase.database.FirebaseDatabase.setPersistenceEnabled(Unknown Source)
    at de.donmanfred.FirebaseDatabaseWrapper.setPersistenceEnabled(FirebaseDatabaseWrapper.java:88)
    at ne.android.firebase.push.main._activity_create(main.java:345)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:515)
    at anywheresoftware.b4a.BA.raiseEvent2(BA.java:186)
    at ne.android.firebase.push.main.afterFirstLayout(main.java:102)
    at ne.android.firebase.push.main.access$000(main.java:17)
    at ne.android.firebase.push.main$WaitForLayout.run(main.java:80)
    at android.os.Handler.handleCallback(Handler.java:733)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:136)
    at android.app.ActivityThread.main(ActivityThread.java:5019)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:515)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
    at dalvik.system.NativeStart.main(Native Method)
 
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BarryW

BarryW

Active Member
Licensed User
Longtime User
B4X: 
Sub Activity_Create(FirstTime As Boolean)
    auth.Initialize("Auth")
   
    realtime.Initialize("Realtime")
    realtime.PersistenceEnabled = True
    realtime.goOnline

    Dim ref As DatabaseReference
    ref.Initialize("Reference", realtime.getReferencefromUrl("https://fir-push-xxxxx.firebaseio.com/Users"))
    ref.addChildEventListener
   
    Activity.LoadLayout("1")
End Sub
 
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DonManfred

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Licensed User
Longtime User
try
B4X: 
Sub Activity_Create(FirstTime As Boolean)

    auth.Initialize("Auth")
    realtime.Initialize("Realtime")
   if Firsttime then
    realtime.PersistenceEnabled = True
    end if
    realtime.goOnline

    Dim ref As DatabaseReference
    ref.Initialize("Reference", realtime.getReferencefromUrl("https://fir-push-xxxxx.firebaseio.com/Users"))
    ref.addChildEventListener
  
    Activity.LoadLayout("1")
End Sub
 
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