Good evening, I created an app that sends SMS with buttons. The recipient's number is currently static. I would like to use a button to open a map to store the recipient's number to send SMS to. So that if it changes, I don't always have to recompile the app. Can you kindly give me an example of how to do it? As always, thanks in advance to our angels.
Simple ways to set the sms phone number.
- use a ListPicker to pick numbers from a List and set Texting.PhoneNumber to an intem in the List.
- use a ContactPicker to pick a number from individuals listed in your phone's Contacts then set Texting.PhoneNumber to ContactPicker.PhoneNumber
- use a PhoneNumberPicker to pick a number .. set texting.PhoneNumber to that number.
- use a Button whose Text is a phone number .. and set texting.PhoneNumber to ButtonThatHasANumber.Text . Use as many Buttons with phone numbers as you need.
Other ways
- a lot more using other native tools.
Learn how to code
Here are some resources to help you learn to use the AI2 tools. A very good way to learn App Inventor is to read the free Inventor's Manual here in the AI2 free online eBook App Inventor 2 Book: Create Your Own Android Apps ... the links are at the bottom of the Web page. The book 'teaches' users how to program with AI2 blocks.
There is a free programming course here Course In A Box and the aia files for the projects in the book are here: App Inventor 2 Book: Create Your Own Android Apps
How to do a lot of basic things with App Inventor are described here: How do you...? .
Also look here App inventor español. Offline. Tutorial. Ejemplos. Instalación. Códigos. Juegos. Curso gratis de App inventor. and here Tutorial Index | imagnity for more tutorials including Imagnity.com List Tutorial, Mirrored - @Saj
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Dear Paolo,
if the numbers to dial are an already known set, you can store those phone numbers into a txt file that will be strored into the ASD (Application Specific Directory).
The file could look like:
+393466509806;+3933498765432;33367543467;3455428543
- At Screen1 initialize you open the file (i.e. whose name could be phone_numbers.txt)
- in file file got event you split the read text at ";".
- the resulting list can be accessed by a listpicker (as @SteveJG has said), then the selected phone nr is the one you used to send the SMS to.
Many other options can be adopted: for example you can reserve a portion of your app to allow adding or removing numbers, or simply you can connect the phone to the development PC and from there (the PC) you can add , modify or erase phone numbers by simply using MS notepad on the file phone_numbers.txt (I normally use this last option).
Ciao.
PS have you solved the issue about the "lampadina" searching ?
Good evening and thank you for your reply, if you could send me an example I would be very grateful. Yes I solved the problem of the light bulb. You were divine. p.s. I use google translate to translate from Italian to English, if the translation is not perfect, forgive me.
Thanks for your help and the resources you pointed out to me. Best regards
Dear Paolo, I'm a bit in a hurry, so I cannot respond you very soon. Probably on the late afternoon, tomorrow. Glad you have solved the "lampadina" issue 
Don't mind about English language, as you know, I'm Italian, me too, though I don't use any translator. I just continue in English so to have a greater possibility that other PU's could intevene in the discussion.
Ciao ciao !
Dear @pdecaro,
please find annexed a raw example on how to store and retrieve phone numbers from a csv file.
It's a poorly "basic" but, as I told yesterday, I'm a bit in a hurry.
Anyway, it works, for me. The file DB_Telefoni.csv, annexed as an example, can reside both on the "Memoria Condivisa Interna" or in the ASD (which should sound something like:
/Memoria condivisa interna/Android/data/appinventor.ai_xxxxx.Telefoni/files) depending on which version of Android do you have.
As you woill see in the code I store also the "in use" phone number into the TinyDB so to have always tha last phone number used as the default one.
Please be aware that, though the DB_Telefoni is a csv file, it's better to work on it withe the simple notepad. The numbers stay on the unique line, separated by commas, and no Carriage Return/Linefeed (Invio) is necessary to end the row.
Hope it helps you.
Ciao e buon Weekend.
Telefoni.aia (3.6 KB)
DB_Telefoni.csv (8.3 KB)
Good morning and thanks for your examples, I made a simple app with two screens and tinyDB, strangely when I press the close application button in screen1, it calls me screen2 and does not close, where am I wrong? Thanks
ecco screen2
Dear @pdecaro,
as very often we suggest to do is to avoid the use of multiple screens and to use virtual screens instead. The annexed .aia shows you how to use Vertical and Horizontal arrangements to behave like "real" screens while using only Screen1 (this offers infinite advantages with respect of using many "true" screens).
Anyway if you search the forum you'll find also a specific section in the FAQ (thanks to @ABG ) regarding how to correctly switch between screens. I think that you'll find ttherein the solution to your issue.
Ciao !
MultipleScreenLittle.aia (849.0 KB)
Switch screens correctly and do not use the open another screen block togerher with Screen1, use close screen instead
Taifun
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