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  1. Pablo Torres

    Android Question Plot points and slide them to the left

    Hi, I have a Tablet connected to an arduino that is sending to the tablet data (one value) 50 times per second. I have to show that data in the tablet, and it has to look like the red part in the image below. Now, the question is, how can I “add” new point to the left, erase first point of the...
  2. M

    iOS Question UDP sending error data in Release mode

    Hi everyone, i'm trying to use UDP to send packets, but i'm getting some errors. I tried this code on an iPhoneXR and it works in debug and also in release(last os version)... i tried the same code on an iPhone6 but when it is in release it doesn't work I need to send a packet, and then wait...
  3. P

    B4A Library SharedPreferences - Save Key-value data

    Hello When i used B4A for the first time, I felt something is missing. it was hard to save values using File.WriteString or even harder: File.WriteMap each time i had to Create a map and write it to a file if i wanted to save changes. i was waiting for anyone to write a library to make this...
  4. M

    iOS Question Check if the WiFi and the Mobile Data are enabled

    How can i check if the Wifi and Mobile Data are enabled (not connected). And what is the event that triggers when one of those two change
  5. KMatle

    B4J Tutorial [B4x] Exchange Data via OkHttpUtils and php (or other platforms) via lists, maps, arrays, etc.

    I made 7 examples how to exchange data between B4x apps and php. I use the POSTSTRING method as it is simple, secure (get-methods will be logged with the data autmatically on the server, post-methods not), strings can be formatted very easy (JSON) and en-/decrypted (not included but see my other...
  6. K

    Android Question error with customlistview

    java.lang.RuntimeException: android.os.TransactionTooLargeException: data parcel size 1176092 bytes I got this is error on customlistview add and there are only 515 records to load Error log :: java.lang.RuntimeException: android.os.TransactionTooLargeException: data parcel size 1176092 bytes...
  7. rleiman

    Android Question json file with geo-coordinates

    Hi Everyone, Do you know of a web site that has a json file I can download that contains the following? For now I'm looking to get the data for cities in the US. I will add other countries later if the web resource has multiple countries. City Name or postcode Lat latitude in degrees Lon...
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