android

I saw this useful thread about how to implement push notifications by Erel: https://www.b4x.com/android/forum/threads/b4x-firebase-push-notifications-2023.148715/ Now I'd just like to know how if there's a method to unsubscribe from all topics or at least one topic in an android App. And maybe...

hi everyone i wanna to send array of integer from udp socket but i can how do it! hoever im trying to do this but it dose not work well here my sample code: Private Sub Label1_Click Dim hum=200,temp=320 As Int Dim int() As Int = Array As Int(temp,hum) Dim byte() As Byte =...

Expert opinions often appear on the Internet that smartphones may become a thing of the past in the coming years, that they will be replaced by other gadgets. Is it worth it to seriously study programming for Android (iOS) in this case? How much longer can smartphones (and tablets) last?

I need multipage layout, so I have a look into B4XPages. What I cannot grasp is how I create many pages in Designer? If I have create each and every label and button programmatically would it be by far easier to make them visible or not visible? Thanks Serg

Hi All, first post here so please bear with me. Sorry if it been discussed, but I spend few hours to search without any success. So if it been discussed before simply show me corresponding thread. In environment where I work we have big warehouse with many access points. When one move inside...

Why my application run successfully on Android 8 but with Android >= 9 crash? in particular, it crashes when trying to create the com.appname folder and its related files including a database that is needed for the app to function Sub CreoDB() If sql.IsInitialized Then sql.Close...

Hello everyone. I had some problems running my code (Maven artifact not found: androidx.core/core-ktx) so i followed the advises given here. Now i have this message: There is no android-30 in platforms (only 28 and 33). I uninstalled and reinstalled B4A. I deleted and redownloaded everything...

Hi experts, Does anyone here have experience working with Newland based POS devices. Currently building android app to connect to N910 Base via Bluetooth and I'm able start a connection but when I try to send data to it, it does not show up on my laptop. For your information N910 also have a...

I'm trying to publish an app in google play store and have this error: Exception Process: com.google.android.googlequicksearchbox:search, PID: 12192 java.util.NoSuchElementException: No value present at j$.util.Optional.get (Optional.java:148) at...

I wanted to share an update that I have made to the AdsHelper extension class. The example app loads AdsHelperFromStarter through the starter service. The reason that this matters, is that it can load App Open, Rewarded Interstitial and Rewarded Video ads when the app starts. The ads can then...

I was trying to understand how Android interacts with hardware to send SMS messages over the RF chip, but I was facing difficulties in understanding the relationship between kernel, software, hardware, operating system, Android Java files, boot image, system image, as well as how to create them...

Hello everyone, I'm currently making a 9x9 grid using 2d array for my school project on b4a. I always get a error when I'm utilizing it. Is there any way to make one using 2d array?

Apk completo para empezar tu empresa de venta de apk para iptv, con motor de reproducción actualizado, varias opciones de reproducción incluyendo reproducción web que te permite reproducir videos directamente de páginas como ok.ru.. Es una aplicación estable con TODAS las HERRAMIENTAS para...

Hi everyone, I've an UI setup that can cause problem if an user tap on the "Next" button on the keyboard when writing in an EditText. I wish to know if its possibile to disable it, or intercept its press and cancel the standard behavior (like _KeyPress). At the moment I worked around the...

Hello everyone. Does anyone know how you could put an ESP8266 to receive audiostreamer over wifi from the example of the walkie talkie b4a, that is, put it only as a receiver. LINK https://www.b4x.com/android/forum/threads/walkie-talkie-audio-streaming-over-wifi-or-bluetooth.30648/ My need...

Hi everyone, I already used BLE in the past for other project without any problems, now i'm using it again after some time and nothing works :confused:. When i try to connect to a ble device it goes in timeout triggerint the Disconnected event because it couldnt connect. My ble device is a...

Hi everyone, someone of you knows if it's possible to connect to a BLE Devices that needs the PIN, and give it by code, instead of let the user insert it through a dialog? Thanks in advance

Hi everyone, I noticed an important missing feature in the BLE library. It seems to not be possibile to refresh the ServiceList, given the fact that the only place where you can get it is in the "Connected" event.... I'have a BLE Device that exposes a Service only after you complete a...

Hello, I Built An App Using Kodular. I'm Facing A Problem And I'm Trying To Solve This For The Past 8 Days. I Implemented Offerwall In My App Using Enhance Extension. The Problem Is, Every Time The Enhancing Completes A Line 'com.google.android.gms.vesion' Repeating Twice In My App...

I didn't find any topic or tutorial on how to use Scrollview with B4XPages on the forum. Could someone please help.