b4a

hi i need convert angle to y and x from lib joystick v1.0 i need work in just this lib please help thanks

Buenos dias, estoy haciendo un reproductor de streaming (radio online) con B4A Estoy utilizando Exoplayer y tambien probé con MediaPlayerStream y con los dos tengo el mismo problema. El audio se empieza a reproducir, hasta alli todo bien. Pero cuando la aplicacion pasa a segundo plano (abro...

Hi all, When my app is initially installed, it comes with a SQLite database. I'm working on code that allows end users to replace this SQLite database after the app has been installed - I would have them download and save the new database to the device's "Downloads" folder. During the...

Hi all, I'm working on a B4X project (it only needs to work for Android), and I am having trouble getting horizontal and vertical scrolling to work with a Custom List View. For vertical-only scrolling, this code works perfectly (and I'm able to click on a row, and pass its IdentityNo to the...

Hello, I need to convert MPEG file to Bytes in order to send it in UDP packets. How can I correctly transform the file to Bytes? Thank you, Nataly

I want to write a chat program without using Firebase (because I like being independent and I also want to improve my programming skills by doing so) So this program should work in the background and receive messages from others and create a notification. I know this is very easy with Firebase...

Hi all I would like to create an APP to forward an incoming call. F.e., after working-hours, if the call coming from a specific number or a list of numbers or a prefix, then I need to forward the call to another number. Dim PE As PhoneEvents Sub PE_PhoneStateChanged (State As String...

Hi, I want to exchange information between two phones remotely without a server and using ip. Is it possible and how? Please attach a source. Thanks🙏

Hello Community! This is the second UI Example by XTools Group and more examples are on the way :) You can find our first UI Example Here : [UI] [B4A] Camping App UI Example + Source Code In this example we've used CustomListView & XUI Views Librarys. And the Bottom Navigation is coded "Simply"...

I am going through the tutorial from this post: https://www.b4x.com/android/forum/threads/tutorial-of-connecting-android-to-ms-sql-server-using-jrdc2.114856/ From the tutorial I have managed to start the webserver and can confirm the connection to the SQL server database is working. I get the...

使用 b4a , 因为 很多 语法 接近 vb ，绕过 了 繁琐 和 不熟悉 的java ，所以 ，可以 较快速 地 写 出 一些 工程 ， 因为 业务 代码 大多 可以 用 vb 写出 ，而且 b4a 深绿色 的 ide 界面 也 让 人 喜欢 ， 简洁 的 界面 也 让 人 喜欢 ， 但是 ，要 想 让 工程 的 功能增强 和 多一些 ，可能 就 困难 了 ，因为 ，它 不仅 要 用 vb ，还有 不少 涉及 java 和 安卓 的 东西 ， 遇见 这些 问题 ，去 国内 的 qq 群 ，基本 也 是 说不清 ，不少 关于 b4a 的 群 里 很少 谈 b4a ，乱糟糟 在...

用了 一段 时间 b4a 了 ， 也 写 了 几个 工程 ， 但是 ， 因为 英文 水平 一般 ，及 对 java 的 不 了解 ， 现在 对 B4A仍 有 很多 迷惑 和 不清楚 的 地方 ， 现举 出 几处 ，望 能 得到 论坛 中 朋友 的 解答 ， 我 写 的 几个 工程 ，都 是 b4a , 不涉及 b4i 等 ， 感觉 说明书 里 说 的 ，要想 让 苹果系统 和 安卓 都能 用 ，就得 写 b4x 工程 ， b4a 工程 是 不能 被 苹果 手机 用 的 ，我 这个 理解 对吗 ？ 论坛 里 贴 出 的 许多 代码 ，【其 左上角 都 标注 着 b4x 这个...

Dear all, I think I'm quite a good programmer but I have no idea which effects a change of OS has to my apps. The apps are written in B4A but since Android 11 they don't want to work. I've tried a mass of analysis, checks, changes ... What am I doing wrong? Who can help? Thanks in advance...

The question that has been on my mind is whether Earl Uzil developed b4a and b4i with b4j? 😂😂 If so, what is b4j developed with?🤣 Didn't the server write the same site with b4j?😍😅 Really, why is the b4a tag not so popular in StackOver Flow and it can not be used in posts?🙂

Hello Community! This is the first UI Example by XTools Group and more examples are on the way :) In this example we've used CustomListView & XUI Views Librarys and implement a self-made Bottom Navigation(Not the best way). And don't forget to check out the Designer Visuals along with the code...

#Region Activity Attributes #FullScreen: True #IncludeTitle: False #End Region Sub Process_Globals End Sub Sub Globals ' Elelemntos que se cargan al cargar el diseño Dim ListView1 As ListView Dim Cont As Int = 0 Private ContRegCliente As Label Private...

Hello I have been getting this error when I go to another module. It repeats multiple times even having numbers beside them. Which ends up closing my my application during debug mode. The attachments below show when the errors occur.

Hi all, Is there a way to increase the buffer size to more than 100? or Is there a way to know the total received bytes (to know when to store it in a temp buffer)? I came across Streamtotal and Streamreceived but they give a 0 value when reading these in "astream_NewData". This is probably...

Hi, when I put the trage sdk from the manifest to more than 26, I can not send anything to the server via httpjob with the poststring. I also added the following code to the manifest but it did not work: SetApplicationAttribute(android:usesCleartextTraffic, "true") What is the solution to this...

Hello All, to solve a problem that a B4A app can not make a connection with a ESP8266 device in AP mode through a Wifi and at the same time, post this data to the internet throuugh the mobile connection, I had the idea to connect the ESP8266 to the hotspot and hopefully, the app can in this...