Sorry if this is a simplistic navigation question, but here goes: I have an application with, say, four or five Activity's, with Activity 1 being the Main Activity (Act), and the application has a navigation menu, too. The Activity_Create looks is basic like this:
Here are the navigation steps:
1) From Main (Act 1), click on something (not the menu) which takes me to Act 2, via the "StartActivity" command. Act 1 does not receive the "Activity.Finish" command because it should still be running and available to come back to.
2) Then, from Act 2, I click on something that takes me to Act 3. Act 2 gets the "Activity.Finish" command and is killed, and then Act 3 is started using the "StartActivity" command.
3) Lastly, in Act 3, to go back to Act 1 (Main), I have two choices available: a) the Back button, or b) the menu. Which brings me to the following questions.
Question 1) If I click the Back button from Act 3, which Act do I go back to? I'm guessing the answer is Act 1 because Act 2 was killed. But, this scenario isn't my real issue - the next question is my real issue.
Question 2) Here's where I'm stumped - if I use the menu and click an item to go back to Act 1 directly, which executes "Activity.Finish" and "StartActivity(Main)", the layout is gone and the screen is empty because I used the "If FirstTime Then PopulateLayout" as described above. If I comment out the FirstTime condition and say just "PopulateLayout", then it works correctly. But, I'm thinking that this creates duplicate child views (granted, I could use the RemoveAllViews command).
I'm thinking that there must be a better way to navigate back to Act 1 (Main) than the way that I'm doing it. For example, should I really be using StartActivity(Main) when Main is/was already started and I just want to return to it, or is there another way to command to go to Main other than StartActivity?
Apologies for the length, but any recommendations are appreciated!
B4X:
Sub Activity_Create(FirstTime As Boolean)
If FirstTime Then
PopulateLayout 'populates the child views onto the layout
End If
End SubHere are the navigation steps:
1) From Main (Act 1), click on something (not the menu) which takes me to Act 2, via the "StartActivity" command. Act 1 does not receive the "Activity.Finish" command because it should still be running and available to come back to.
2) Then, from Act 2, I click on something that takes me to Act 3. Act 2 gets the "Activity.Finish" command and is killed, and then Act 3 is started using the "StartActivity" command.
3) Lastly, in Act 3, to go back to Act 1 (Main), I have two choices available: a) the Back button, or b) the menu. Which brings me to the following questions.
Question 1) If I click the Back button from Act 3, which Act do I go back to? I'm guessing the answer is Act 1 because Act 2 was killed. But, this scenario isn't my real issue - the next question is my real issue.
Question 2) Here's where I'm stumped - if I use the menu and click an item to go back to Act 1 directly, which executes "Activity.Finish" and "StartActivity(Main)", the layout is gone and the screen is empty because I used the "If FirstTime Then PopulateLayout" as described above. If I comment out the FirstTime condition and say just "PopulateLayout", then it works correctly. But, I'm thinking that this creates duplicate child views (granted, I could use the RemoveAllViews command).
I'm thinking that there must be a better way to navigate back to Act 1 (Main) than the way that I'm doing it. For example, should I really be using StartActivity(Main) when Main is/was already started and I just want to return to it, or is there another way to command to go to Main other than StartActivity?
Apologies for the length, but any recommendations are appreciated!
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