CallSub (Component As Object, Sub As String) As Object
Calls the given sub. CallSub can be used to call a sub which belongs to a different module.
However the sub will only be called if the other module is not paused. In that case an empty string will be returned.
You can use IsPaused to test whether a module is paused.
This means that one activity cannot call a sub of a different activity. As the other activity will be paused for sure.
CallSub allows an activity to call a service sub or a service to call an activity sub.
Note that it is not possible to call subs of code modules.
CallSub can also be used to call subs in the current module. Pass Me as the component in that case.
Example:
CallSub(Main, "RefreshData")
B4A Class [B4X] CallSubPlus - CallSub with explicit delay - Erel Nov 30, 2015 (26 reactions)In many cases you need to run a task in a few seconds. The solution for such cases is to create a timer and then execute the task in the timer's Tick event. This is good for a single task. However if you need to run multiple tasks then it becomes difficult to maintain.
This small class makes it much simpler. You just need to call CallSubPlus with the target sub and the delay.
Internally it uses a (one shot) timer together with CallSubDelayed or CallSub.
There are four methods:
CallSubPlus...
B4A Question [B4X] Resumable Sub, CustomClass Eventi and CallSub - Star-Dust Mar 3, 2021 this
'Call Event
If SubExist(mCallBack,MEvent & "_Event") then
Wait for (CallSub...
link: 🥰 ...
link: 42 minutes ago:
https://www.b4x.com/android/forum/threads/chiacchiericci.63457/post-804301
but... w...
link: with:
Dim rs As ResumableSub = CallSub(mCallBack,MEvent & "_Event")
Wait for (rs) Complete...
Wish Unlimited number of arguments when using CallSub/CallSubDelayed - LucaMs Jul 1, 2019)
I don't know if creating a CallSubDelayed4 (and CallSub4) that allows you to send...
B4i Code Snippet CallSub with ANY number of parameters - narek adonts Mar 9, 2019 (1 reaction)Sub CallSubX (Component As Object,SubName As String,Params() As Object)
Dim no As NativeObject=Component
Dim name As String=SubName
Dim ll As List
ll.Initialize2(Params)
For i =0 To Params.Length-1
name=name & ":"
Next
no.GetField("bi").RunMethod("raiseUIEvent:event:params:",Array(Null,name,ll))
End Sub
Example usage
Cal...
Other New feature: CallSub AutoComplete - Erel May 24, 2018 (20 reactions)68252...
B4A Question [B4XPages] CallSub of a Page from a Class - Mike1970 Jun 21, 2021 A As ResumableSub
... Work
If B4XPages.GetManager.GetTopPage.Id == "B" Then CallSub(B, "UpdateUI") '<---- CallSub does not work for B4XPage
End Sub
How can i achive...
link:
It is up to you. You can declare it wherever you like.
Dim b As Page145 = B4XPages.GetPage("p...
link: It is up to you. You can declare it wherever you like.
Dim b As Page145 = B4XPages.GetPage("pa...
link:
Your code should work assuming that B was set correctly.
It is however not needed.
If B4XPages.Ge...
B4A Question CallSub from Inline Java Class - Jack Cole Jun 5, 2021I'm trying to modify the AdsHelper class for traditional rewarded video ads and to add some even...
link: static String eventName;
static B4AClass target;
public void setCallback(String s, B4AClass targ...
link: Hi Jack!
Please help other people if may need:
Write down the solution!...
link: I figured out how to do it....
B4A Question B4Xpages and callsub from a services - victormedranop May 11, 2021How can i made a callsub from a service using b4xpages ?
Dim j As HttpJob
j.Initialize("", Me)
j.Download("http://"&public_variables.serviceip&"/drinks...))
CallSub(B4XMainPages,"LoadConfig") <------------ERROR HERE...
link: You don't need to use CallSub.
If B4XPages.IsInitialized Then
B4XPages.MainPage.LoadConfig...
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CallSub(B4XMainPages,"LoadConfig") <------------ERROR HERE
You have to specify which...
B4A Question Problem with WaitFor and CallSub (service) - Mike1970 Mar 1, 2021 DB è vuoto
Wait For (CallSub2(HeavyTasks, "Add", Array As Object("xxx"...
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No reason to use a service. Will not help.
The answer was given in the second post. You should use...
link: No reason to use a service. Will not help.
I did a combination of the suggetions in this thread i o...
link:
Everything will be simpler if you use B4XPages.
It is already a complex project (for me) i'm w...
B4A Question [b4a] callsub3 Exception - jinyistudio May 18, 2016Hi
I add one new parameter to "connecto". I always get a message as following when i running "callsub3". Why ....? :eek:
Error loading state.
java.lang....Debug.CallSub4(Debug.java:336)
at anywheresoftware.b4a.debug.Debug.CallSubNew3(Debug.java:288... signature.
at anywheresoftware.b4a.debug.Debug.CallSub4(Debug.java:321)
... 27 more
** Activity...
Dim pwd As String=txtPassword.Text
CallSub3(Starter, "ConnectTo",acc,pwd) <...
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