Tiny DB - Store and Retrieve #Confused

[GC1]

Good morning all,

I have downloaded a TinyDB Helper app to help understand how these work - I cant see in the literature I have been sent covers my question, or perhaps I am missing something.

I have attached some screen shots and also the file.

Enter Values:

1.Here I can scan the barcode (These are unique), the barcode field is populated with the result - ALL WORKING
2. Description: Text Field to store some information - ALL WORKING
3. **Model:**I have now added model and this is where I get confused with storing this information - Confused.

Retrieve Values

1. Scan existing barcode - All working
2. Description - This is retrieved as per the barcode, i have tested some store data - ALL WORKING
3. Model: now that i have added model i can get it to present the result the same as the description…

I am not sure it is the way i am storing the data or retrieving it, or both?
I have tried a few combinations and left the blocks, I have had mixed results the description concatenated with model etc…

I am planning to add more fields but if i can understand how this works i can then add in the future.

Thanks you for reading, and thanks for any guidance you can offer.

Regards

GC

TinyDBHelper_GCEdit (1).aia (3.3 KB)

[GC1]

Hi,

I tried this combination and get an error when retrieving data, so totally stuck.

Thanks

[TIMAI2]

Try like this:

[GC1]

Hi TIMAI2,

Thank you for helping with this, I have replicated what you have set out and I have managed to get it to work - I appreciate you taking the time to assist .

I do need to split this over to two screens , whereby one screen will be to save information and the other to scan/retrieve the stored data.

GC

[TIMAI2]

@GC1

I do need to split this over to two screens

Why ? Use virtual screens instead!

Use different screens wisely

• Before starting to create another screen, first you should think about is it really necessary? 
• See also Building apps with many screens and SteveJG's post about advantages/disadvantages, because in only one screen you also can use vertical arrangements to simulate different screens, just set the arrangements to visible = true/false as needed... 
• See also Martyn_HK's example about how to use Tabs in App Inventor and another example from Cyd. and my Tabbed Screens Demo

If you decided to use different screens, then you should switch them correctly, else you will run out of memory after a while...      
The recommended method of switching screens in App Inventor

(Thanks Taifun)

 

Also see demo: multiscreen.aia