Android Question CallSubDelayed2

KMatle

Expert

Licensed User

Longtime User

• Mar 18, 2017

• #2

Activities are ment to show the UI for the user. So if you call a sub in an activity it will always be started and the calling is paused.

I assume you don't really need to show something (e.g. updated data in a view) so just use a service and put the sub in it. Use process_globals variables to exchange data between modules/activities.

 

Upvote 0

A

Andreas_D99

Member

Licensed User

• Mar 18, 2017

• #3

Thanks, i'll use a service...

 

Upvote 0

A

Andreas_D99

Member

Licensed User

• Mar 18, 2017

• #4

...so i make a Mistake. I want to show the Data in the Activity1, but only, when Activity2 is closed by User.
For example: Each Time, when a User select a Line in a ListView in Activity2, the Value should be add in a ListView in Activity1, without opening Activity1. How is this possible?

 

Upvote 0

klaus

Expert

Licensed User

Longtime User

• Mar 18, 2017

• #5

You cannot update a view in another Activity without shoeing it!
You need to save the data changes somewhere and update the ListView in Activity1 in Activity_Resume.

 

Upvote 0

A

Andreas_D99

Member

Licensed User

• Mar 18, 2017

• #6

Unfortunately...
so i store it in an Array... or anybody knows a better way...?

 

Upvote 0

klaus

Expert

Licensed User

Longtime User

• Mar 18, 2017

• #7

Depending on your data structure there are different solutions.
Process global variables, arrays or objects like List or Map.

 

Upvote 0