I need to read the events from a specific google calendar (I have a few on my phone) and list them date wise.
Searching our Forum I found Don's very good library and explanation,
I assume this is the way to go in current version.
I got error in B4XPages, may be I made some mistake somewhere, so I tried Activity logic, as the explanation is based on it.
I copy pasted the codes as explained but still got error.
Error log
I think I need to change some string value but do not know which one.
Please help.
Regards,
Anand
Searching our Forum I found Don's very good library and explanation,
Working with Calendars using ContentResolver (Query, Insert, Update, Delete)
Hello, i´m playing around with the Calendars on my Device and want to Query them. I found out how it works using ContentResolver querying the ContentProvider available in Android. You can find it documented here. I started using java code and a java-librarywrapper for this but then i realized...
I assume this is the way to go in current version.
I got error in B4XPages, may be I made some mistake somewhere, so I tried Activity logic, as the explanation is based on it.
I copy pasted the codes as explained but still got error.
B4X:
Sub Activity_Create(FirstTime As Boolean)
canAccessCal = False
Activity.LoadLayout("Layout")
Starter.rp.CheckAndRequest("android.permission.READ_CALENDAR")
wait for Activity_PermissionResult (Permission As String, Result As Boolean)
If Result = False Then
Log("NO Permission READ Calendar")
Else
Starter.rp.CheckAndRequest("android.permission.WRITE_CALENDAR")
wait for Activity_PermissionResult (Permission As String, Result As Boolean)
If Result Then
canAccessCal = True
cr.Initialize("CR")
End If
End If
If canAccessCal Then
' We are working from here now...
Log("can read write calendar")
Dim projection() As String = Array As String(ccon.ID,ccon.NAME,ccon.CALENDAR_DISPLAY_NAME,ccon.ACCOUNT_NAME,ccon.ACCOUNT_TYPE,ccon.OWNER_ACCOUNT)
cr.QueryAsync(ccon.CONTENT_URI,projection, ccon.VISIBLE&"=1",Null,ccon.ID&" ASC")
wait for CR_QueryCompleted(Success As Boolean, Crsr As Cursor)
Log($"QueryCompleted(${Success})"$)
If Crsr.IsInitialized Then
If Crsr.RowCount > 0 Then
Dim Cursor As Cursor
Cursor = Crsr
For i = 0 To Cursor.RowCount - 1
Cursor.Position = i
'calcon.ACCOUNT_TYPE,calcon.OWNER_ACCOUNT)
Log($"CR --------------------------------------"$)
Log(Cursor.GetString(ccon.ID)) ' You can use the constants you used for the projection. But remember: only the ones you defined in the projection are available in the Result.
Log(Cursor.GetString(ccon.NAME))
Log(Cursor.GetString(ccon.CALENDAR_DISPLAY_NAME))
Log(Cursor.GetString(ccon.ACCOUNT_NAME))
Log(Cursor.GetString(ccon.ACCOUNT_TYPE))
Log(Cursor.GetString(ccon.OWNER_ACCOUNT))
Next
Cursor.Close
Else
' No rows
End If
Else
'
End If
End If
End SubError log
B4X:
Logger connected to: Xiaomi Redmi 4
--------- beginning of main
*** Service (starter) Create ***
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
can read write calendar
QueryCompleted(true)
CR --------------------------------------
1
main$ResumableSub_Activity_Createresume (java line: 556)
java.lang.NullPointerException: Attempt to invoke virtual method 'int java.lang.String.length()' on a null object reference
at anywheresoftware.b4a.BA.addLogPrefix(BA.java:604)
at anywheresoftware.b4a.keywords.Common.LogImpl(Common.java:191)
at b4a.GCalenadar.main$ResumableSub_Activity_Create.resume(main.java:556)
at anywheresoftware.b4a.BA.checkAndRunWaitForEvent(BA.java:267)
at anywheresoftware.b4a.BA.raiseEvent2(BA.java:207)
at anywheresoftware.b4a.BA$2.run(BA.java:387)
at android.os.Handler.handleCallback(Handler.java:754)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:163)
at android.app.ActivityThread.main(ActivityThread.java:6238)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:933)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)I think I need to change some string value but do not know which one.
Please help.
Regards,
Anand