Android Question Firebase v1 2023 sending message app fails

fs007 · Sep 5, 2023

I want to code an app which sends Firebase v1 messages.
Therefore i copied the B4J-sendingTool, which was available in the Tutorial and the dependencies (in addlib), but it doesn't work in B4A:
Runtime error occurs in this line:

GoogleCredentials.InitializeStatic("com.google.auth.oauth2.GoogleCredentials")

Error message is:

main_gettokenvalue (java line: 451)
java.lang.ClassNotFoundException: com.google$auth$oauth2$GoogleCredentials
at anywheresoftware.b4j.object.JavaObject.getCorrectClassName(JavaObject.java:289)
at anywheresoftware.b4j.object.JavaObject.InitializeStatic(JavaObject.java:75)
at my.sender3.main._gettokenvalue(main.java:451)
at my.sender3.main$ResumableSub_Send.resume(main.java:550)
at my.sender3.main._send(main.java:525)
at my.sender3.main._button1_click(main.java:440)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:221)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:205)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:201)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
at android.view.View.performClick(View.java:7792)
at android.widget.TextView.performClick(TextView.java:16112)
at android.view.View.performClickInternal(View.java:7769)
at android.view.View.access$3800(View.java:910)
at android.view.View$PerformClick.run(View.java:30218)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:226)
at android.os.Looper.loop(Looper.java:313)
at android.app.ActivityThread.main(ActivityThread.java:8663)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:571)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1135)
java.lang.ClassNotFoundException: com.google$auth$oauth2$GoogleCredentials

fs007 · Sep 6, 2023

Addition: There seems to be a major bug in this code of B4J-sendingTool, because the code runs error free if i disable strict-mode. But where is the bug ???

Private Sub GetTokenValue As String
DisableStrictMode
Dim GoogleCredentials As JavaObject
GoogleCredentials.InitializeStatic("com.google.auth.oauth2.GoogleCredentials")
Dim Credentials As JavaObject = GoogleCredentials.RunMethodJO("fromStream", Array(File.OpenInput(File.DirAssets, fn))) _
.RunMethod("createScoped", Array(Array As String("https://www.googleapis.com/auth/firebase.messaging")))
'Log(Credentials)
Credentials.RunMethod("refreshIfExpired", Null)
Return Credentials.RunMethodJO("getAccessToken", Null).RunMethod("getTokenValue", Null)
End Sub

Erel · Sep 6, 2023

1. Please use [code]code here...[/code] tags when posting code.

2. There is no bug at all.
This is a B4J code that was written for server and console apps. Android strict mode isn't relevant for the intended use case.

3. Post the full error message.

fs007 · Sep 6, 2023

ok Sir, but my "intended use case" is to use this code in an android app. Here is the full error message if i do NOT DISABLE StrictMode (code works error-free with StrictMode disabled): Issue seems to be Network on Main Thread

main_gettokenvalue (java line: 505)
java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4j.object.JavaObject.RunMethod(JavaObject.java:132)
at my.sender3.main._gettokenvalue(main.java:505)
at my.sender3.main$ResumableSub_Send.resume(main.java:601)
at my.sender3.main._send(main.java:576)
at my.sender3.main._button1_click(main.java:464)
at java.lang.reflect.Method.invoke(Native Method)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:221)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:205)
at anywheresoftware.b4a.BA.raiseEvent(BA.java:201)
at anywheresoftware.b4a.objects.ViewWrapper$1.onClick(ViewWrapper.java:80)
at android.view.View.performClick(View.java:7792)
at android.widget.TextView.performClick(TextView.java:16112)
at android.view.View.performClickInternal(View.java:7769)
at android.view.View.access$3800(View.java:910)
at android.view.View$PerformClick.run(View.java:30218)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:226)
at android.os.Looper.loop(Looper.java:313)
at android.app.ActivityThread.main(ActivityThread.java:8663)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:571)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1135)
Caused by: android.os.NetworkOnMainThreadException
at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1668)
at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:115)
at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)
at java.net.InetAddress.getAllByName(InetAddress.java:1152)
at com.android.okhttp.Dns$1.lookup(Dns.java:41)
at com.android.okhttp.internal.http.RouteSelector.resetNextInetSocketAddress(RouteSelector.java:178)
at com.android.okhttp.internal.http.RouteSelector.nextProxy(RouteSelector.java:144)
at com.android.okhttp.internal.http.RouteSelector.next(RouteSelector.java:86)
at com.android.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:176)
at com.android.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:128)
at com.android.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:97)
at com.android.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:289)
at com.android.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:232)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:465)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.connect(HttpURLConnectionImpl.java:131)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getOutputStream(HttpURLConnectionImpl.java:262)
at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getOutputStream(DelegatingHttpsURLConnection.java:219)
at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getOutputStream(HttpsURLConnectionImpl.java:30)
at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:113)
at com.google.api.client.http.javanet.NetHttpRequest.execute(NetHttpRequest.java:84)
at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1012)
at com.google.auth.oauth2.ServiceAccountCredentials.refreshAccessToken(ServiceAccountCredentials.java:538)
at com.google.auth.oauth2.OAuth2Credentials$1.call(OAuth2Credentials.java:269)
at com.google.auth.oauth2.OAuth2Credentials$1.call(OAuth2Credentials.java:266)
at java.util.concurrent.FutureTask.run(FutureTask.java:264)
at com.google.auth.oauth2.OAuth2Credentials$RefreshTask.run(OAuth2Credentials.java:633)
at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)
at com.google.auth.oauth2.OAuth2Credentials$AsyncRefreshResult.executeIfNew(OAuth2Credentials.java:581)
at com.google.auth.oauth2.OAuth2Credentials.asyncFetch(OAuth2Credentials.java:232)
at com.google.auth.oauth2.OAuth2Credentials.refreshIfExpired(OAuth2Credentials.java:203)
... 24 more
Message longer than Log limit (4000). Message was truncated.

Erel · Sep 7, 2023

1. I hope you understood that it is not a "major bug".
2. Disable strict mode if you want to use it in B4A.

Android Question Firebase v1 2023 sending message app fails

fs007

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Erel

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