I just spent MANY hours trying to figure this one out
So, why is the "Sleep(250)" needed to prevent the below Crash?
Here is my code (ExportSettings is the Starting Sub):
And this is the error I will get without the Sleep(250):
So, why is the "Sleep(250)" needed to prevent the below Crash?
Here is my code (ExportSettings is the Starting Sub):
B4X:
Sub Globals
Dim Zip As ArchiverPlusZip 'ArchivePlusZip 1.13
End Sub
Sub ExportSettings
Dim SF As List
SF.Initialize
SF.Add(File.Combine(SharedDir,"My.db"))
SF.Add(File.Combine(SharedDir,"myapp_preferences.xml"))
Zip.AddFilesToZip(SF,File.Combine(SharedDir,"myapp_settings.zip"),"Zip")
'Since I could not figure out how to use a 'Wait For' here, I was forced to use the event sub below
End Sub
Sub Zip_ZipResult(Result As Int, ErrorMsg As String)
If Result <> Zip.ZIP_RESULT_SUCCESS Then
Msgbox("There was an Error creating the backup ZIP file, Please try again (" & ErrorMsg & ")","Export Error")
Return
End If
'Sleep(250) 'if I dont have this line, I will get below error
Wait For(SendEmail(EmailAddress,"Email Subject","Email Body","myapp_settings.zip")) Complete (Res As String)
If Res <> "" Then
Msgbox("There was an error sending the email (" & Res & ")" & CRLF & CRLF & "Please Try Again", "Email Error")
Else
Msgbox("Email Sent Successfully","Email")
End If
End Sub
Sub SendEmail (ToEmail As String, EmailSubject As String, EmailBody As String, AttachmentFileName as String) As ResumableSub
Dim SMTP As SMTP 'Net 1.80
...
' (code to setup properties of SMTP object)
...
ProgressDialogShow("Sending Email...")
Dim SS As Object = SMTP.Send
Wait For (SS) Smtp_MessageSent(Success As Boolean)
ProgressDialogHide
If Success = False Then
Return LastException.Message
Else
Return ""
End If
End SubAnd this is the error I will get without the Sleep(250):
B4X:
main$ResumableSub_SendEmailresume (java line: 3140)
java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
at android.os.Handler.<init>(Handler.java:200)
at android.os.Handler.<init>(Handler.java:114)
at android.app.Dialog.<init>(Dialog.java:113)
at android.app.AlertDialog.<init>(AlertDialog.java:125)
at android.app.AlertDialog.<init>(AlertDialog.java:109)
at android.app.ProgressDialog.<init>(ProgressDialog.java:86)
at android.app.ProgressDialog.show(ProgressDialog.java:131)
at android.app.ProgressDialog.show(ProgressDialog.java:125)
at anywheresoftware.b4a.keywords.Common.ProgressDialogShow2(Common.java:742)
at anywheresoftware.b4a.keywords.Common.ProgressDialogShow(Common.java:731)
at com.omnisoft.voiceit.main$ResumableSub_SendEmail.resume(main.java:3140)
at com.omnisoft.voiceit.main._sendemail(main.java:3059)
at com.omnisoft.voiceit.main$ResumableSub_Zip_ZipResult.resume(main.java:5409)
at com.omnisoft.voiceit.main._zip_zipresult(main.java:5346)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:196)
at a.a.a.f.a.a(SourceFile:88)
at a.a.a.f.a.c(SourceFile:155)
at a.a.a.f.a.a(SourceFile:163)
at a.a.a.i.a.a(SourceFile:190)
at a.a.a.i.a$1.run(SourceFile:1101)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)
Last edited: