iOS Question B4i equivalent to B4a

[Stefano Di Chiano]

Hi,
I need to make the B4i version of a B4a app, but I can't find all the equivalent libraries and some code parts. Can someone help me find what I need or suggest me another way to get the same result?
I'm using these libraries:
- QRCodeReaderV102, "BitmapCreator", "Bytes Converter" to scan and create QR codes.
- GeoLocation, GPS, and "RuntimePermissions" to get the location of the user when scanning a QR code.

I'm also looking for the equivalent of:

File.WriteList(File.DirDefaultExternal, "File.txt", List)

and:

Dim parser As JSONParser
parser.NextValue

I see that there is "parser.NextObject" but the IDE gives me a warning when I try to assign the returned value to a string. I wonder if that's ok.

 

[aeric]

To scan barcode in B4i you can use iBarcode library
or check

[B4X] [B4XPages] Barcode Reader

B4A + B4i barcode reader. Don't miss: - #PlistExtra in B4i. - Manifest code + #AdditionalJar in B4A Depends on BCToast: https://www.b4x.com/android/forum/threads/b4x-bctoast-cross-platform-custom-toast-message.111046/#content (BCToast will be an internal library in the near future) While the...

www.b4x.com

 

[aeric]

To generate QR code

[B4X] QRGenerator - Cross platform QR code generator

QRGenerator is a class that generates QR codes. It is written in B4X and it is compatible with B4A, B4i and B4J. iPhone default camera app recognizing the QR code displayed in a B4A app: Can create codes made of up to 2953 bytes. It depends on XUI library and B4XCollections v1.50+. It uses...

www.b4x.com

The forum search is working

 

[Stefano Di Chiano]

Thanks, I'll take a look at these libraries you suggested.

The forum search is working

I know.. I just wasn't sure about some libraries and couldn't find others.

 

[ilan]

for barcodes you have the iBarcode library:

iBarcode library

This library allows you to use the device camera to scan for all kinds of barcodes. It is based on this open source project: https://github.com/mikebuss/MTBBarcodeScanner License: https://github.com/mikebuss/MTBBarcodeScanner/blob/master/LICENSE The attached example demonstrates how to use this...

www.b4x.com

and for qr barcode you have a b4x solution:

[B4X] QRGenerator - Cross platform QR code generator

QRGenerator is a class that generates QR codes. It is written in B4X and it is compatible with B4A, B4i and B4J. iPhone default camera app recognizing the QR code displayed in a B4A app: Can create codes made of up to 2953 bytes. It depends on XUI library and B4XCollections v1.50+. It uses...

www.b4x.com

GPS location tracking can be done like this:

Location & GPS

The iLocation library allows you to get the current known location and to monitor location updates. You can also monitor the device heading direction. As the location is considered a private information, you can only get the location if the user has allowed you to get the location. This type of...

www.b4x.com

there are no runtime permission like in android but what you need to do is add an explanation text of the purpose of using the special hardware like GPS, microphone, etc... to the Plist.

example for GPS:

  #PlistExtra:<key>NSLocationWhenInUseUsageDescription</key><string>Used to display the current navigation data.</string>
   #PlistExtra:<key>NSLocationUsageDescription</key><string>Used to display the current navigation data.</string>

File.WriteList(File.DirDefaultExternal, "File.txt", List)

* in ios you cannot access the external storage so all you can do is saving data in your File.DirDocuments directory.

    File.WriteList(File.DirDocuments,"File.txt", List)

(there are more folders you can save data to but File.DirDocuments is the place you should save data that u want to use in your app)

note that you can save images to the gallery app and also make your folder sync-able with iTunes! but access to external storage is not possible.

* json parser (iJson) should be the same in b4i.

 

[Stefano Di Chiano]

Thank you very much Ilan!

 

[Stefano Di Chiano]

json parser (iJson) should be the same in b4i.

I don't have "parser.nextValue" in b4i though. I only see "parser.nextObject" and "parser.nextArray" and they give me an error when I use them.

 

[ilan]

I almost never use json in my apps but i would try parsernextobject. Seems logical for me. Does it return the next value?

 

[Stefano Di Chiano]

I almost never use json in my apps but i would try parsernextobject. Seems logical for me. Does it return the next value?

No, and I get the following error:

Application_Start
Application_Active
FBSDKLog: Missing [FBSDKAppEvents appEventsState.appID] for [FBSDKAppEvents flushOnMainQueue:]
FBSDKLog: Missing [FBSDKAppEvents appEventsState.appID] for [FBSDKAppEvents flushOnMainQueue:]
Error occurred on line: 59 (Login)
Error parsing string: Error Domain=NSCocoaErrorDomain Code=3840 "JSON text did not start with array or object and option to allow fragments not set." UserInfo={NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}
Stack Trace: (
CoreFoundation E2D6A76B-6879-31A3-8168-DF49F94E17CD + 1222248
libobjc.A.dylib objc_exception_throw + 56
CoreFoundation E2D6A76B-6879-31A3-8168-DF49F94E17CD + 133720
Uppeee -[B4IJSONParser parse] + 220
Uppeee -[b4i_login _jobdone:] + 1152
CoreFoundation E2D6A76B-6879-31A3-8168-DF49F94E17CD + 1247424
CoreFoundation E2D6A76B-6879-31A3-8168-DF49F94E17CD + 6768
Uppeee +[B4I runDynamicMethod:method:throwErrorIfMissing:args:] + 1608
Uppeee -[B4IShell runMethod:] + 448
Uppeee -[B4IShell raiseEventImpl:method:args::] + 2172
Uppeee -[B4IShellBI raiseEvent:eventarams:] + 1580
Uppeee -[B4ICommon CallSub4::::] + 316

 

[ilan]

have a look at this:

Problem parsing json

I'm having trouble with a map created from a parsed JSON string. See the code below. 'executed from javascript Sub ShowSleepLog(Record As String, LastEntryRecord As String) #if b4i Dim su As StringUtils Record=su.DecodeUrl(Record,"UTF8")...

www.b4x.com

 

[Stefano Di Chiano]

Luckily, the line I was using with the json parser was not essential, so I removed it.
Thanks for the help.