Data

[Help For Homeless]

Hi,

We are making an app, we have in a screen where you check 2 boxes and type in 2 text boxes. The data is then carried over to another page and each one should be shown on different labels, but there are four labels only showing one and when you click a button they may change, but it doesn't do what it is required to do. Any suggestions on what to do

[TimAI2]

I see several issues here:

1. Incorrect switching of screens (see below for information) - probably no need for multiple screens
2. I can't see if you have loaded a tinywebDB element to each of your screens ?
3. Loading of textbox data before user entry, not after (use a button or timer for this)
4. The need to simplify the checkbox "check" routines using any component elements (DRY programming - don't repeat yourself)
5. There are probably more to be spotted by eagle eyed power users....
6. Also might consider listpickers/listviews/spinners for selections instead of checkboxes to make life easier, and possibly get everything viewable on the screen

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

If you haven't done it already....

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