Android Question Homescreen widgets and Receivers in version 12.2

Erel

B4X founder

Staff member

Licensed User

Longtime User

• Jan 24, 2023

• #2

Yes

 

Upvote 0

Cebuvi

Active Member

Licensed User

Longtime User

• Jan 24, 2023

• #3

The code in the old widget is in the Sub Service_Start and Sub Service_Destroy, where should I add it now?

 

Last edited: Jan 24, 2023

Upvote 0

Erel

B4X founder

Staff member

Licensed User

Longtime User

• Jan 25, 2023

• #4

Service_Start -> Receiver_Receive

There is no equivalent "destroy" method.

 

Upvote 0

Alessandro71

Well-Known Member

Licensed User

Longtime User

• Jan 25, 2023

• #5

since we can't assume Starter is running, all global data that usually is declared in it, should also be ported to the Receiver module, I think.
For example a SQLite database, should be opened, read and closed within the Receiver module?

 

Upvote 0

Erel

B4X founder

Staff member

Licensed User

Longtime User

• Jan 26, 2023

• #6

True.

It doesn't mean that you need to duplicate code. You can implement it in a class and make an instance in the receiver class and in one of the B4XPages.

 

Upvote 0

Alessandro71

Well-Known Member

Licensed User

Longtime User

• Jan 26, 2023

• #7

Erel said:

True.

It doesn't mean that you need to duplicate code. You can implement it in a class and make an instance in the receiver class and in one of the B4XPages.

Click to expand...

Since tapping the widget also opens the main app, there’s a chance that the widget will update while the app is in foreground.
this means the database object will be instantiated 2 times and the database file opened 2 times: since it was stated that the Database object should be a global, single one to guarantee concurrency, this is giving me headaches…

 

Upvote 0

Erel

B4X founder

Staff member

Licensed User

Longtime User

• Jan 27, 2023

• #8

Make it a process global variable and check whether it was already initialized or not.

 

Upvote 0