b4a

Good evening I must make an application that sends x amount of SMS I would like to know if there is currently a limit for sending SMS from Android and if there is, how much is it and what options do you recommend for the development of this app

Not long ago Don provided example Provider Requester Activity based communication via Intents. Although that Activity version had some hints in it for Service based version, it took several additional steps to get it working (Service Intent must be explicit, which may reflect more on my...

Hello, I am trying to create an UltimateListView using data from a SQLite database. How do i achieve this? I thought about executing the query in the Activity_Create, like this: Dim ConnessioneDB As SQL ConnessioneDB.Initialize(File.DirInternal, "DatabaseListino.sqlite",False)...

B4XDrawer panel allows all touch / click event to pass to elements below it unless it is on an element in the panel. Although I avoid modification in a class directly, to avoid issues when upgrading, I tried capturing LeftPanel_Click and LeftPanel_touch sub in B4XDrawer but it does not fire...

Hello everyone! I read a lot of posts about this issue, but I did not succeed to find a solution. I use firebase notification. Is there any way that my app can show the notification while is not running? As I saw logs, I received the Message, but the method notification.notify doesn't do...

What are the (full) version numbers of build-tools, tools & platform-tools in links to 'Android SDK Command line tools' (filename is commandlinetools-win-6609375_latest.zip) & ''required resources' (filename is commandlinetools-win-6609375_latest.zip) in the B4A installation instructions on...

I have wirelessly connected successfully with B4A-Bridge 2.62 from B4A v11.20 (using Tools->Connect) to my Android phone. But when I do Project->Compile &Run on any project I get: adb.exe F 03-02 09:17:47 427 425 sysdeps_win32.cpp:2743] _wenviron is not set, did you link with -municode? I...

I've been trying to find the B4XPagesNavBar project without success. I've used [B4X] [B4XPages] as a search term in the overall Tutorials web page as stated in the B4X booklet but that gives many projects. And I haven't found a suitable search mechanism to find B4XPagesNavBar: I've tried terms...

Well, I ve decided to create a Form-View Generator (B4J - B4A)... that creates Forms with B4XTable + with no writing code at all... The Designer is in B4J (like FormBuilder), the produced code/files working at B4A too !!! Well.. after one month of programming... I want to share / sell my...

I am building an application that will allow the user to create an application for his friend's birthday without programming and with his own phone. Now I want to put a b4a source in my DirAssets application and sign it on my phone using my Android SDK. How can I do that? I've done this before...

Hello, when I call my server with my library, it works only in Debug mode but crashes in Release mode. And i added permission in manifest: AddPermission(android.permission.INTERNET) The problem is on all my phones, they are with the following android version: 8.0, 9.0 and 11.0. It’s a huawei...

Hello I downloaded the source for b4a from the link below: https://www.b4x.com/android/forum/threads/b4x-xui-wobblemenu-a-cross-platform-animated-bottom-navigation.118412 Source compilation is done correctly but this error occurs when running the application: wobblemenu_designercreateview (java...

Hello everyone! I must make an app (to be more specific 2 apps Android & IOS). I want to connect with AWS MQTT Broker, via MQTT protocol. I made a lot of tries to achieve a connection (first of all, and then publish-subscribe to a topic), with no success. Is there someone, who has used AWS, to...

Hello! I'm getting this error when I do a SQL Select from in SQLite. The data is not big, the query only selecting 3 columns and getting 8 rows of data. android.database.sqlite.SQLiteBlobTooBigException: Row too big to fit into CursorWindow requiredPos=7, totalRows=8 at...

You must have seen many times that in WhatsApp, someone calls us and our phone screen turns on and the call activity is started! I want to implement exactly this feature in my program. (The user's phone may or may not be locked ...) please guide me. Thankful❤️

Hello, How did Telegram, WhatsApp, YouTube, etc. establish their security? A hacker can decompile my program and gain access to my links or IP server and abuse it. For example, send thousands of requests to my server and host in a row. Or enter my api link in the browser and see or change user...

I want to upload an activity on the server and download it from the server in the main activity and then start it. How do I do that?

Hello! I need some help, I don't know what is causing this error to appear. Didn't make any big changes to it and now the app dont even open Registro conectado a: Xiaomi Redmi Note 7 --------- beginning of system --------- beginning of main *** Service (starter) Create *** ** Service (starter)...

Hello, I'm using the exoplayer to stream mp3 from my server. Is it possible to stream from a protected folder? So the mp3 stays protected from unwanted downloading and only streaming via the app is possible? If yes, then please how to do that? I've searched but I can't find similar example...

My app uses webviews to display lightly formatted HTML syncronised from a web server for things like help pages etc. In B4a I use the WebViewSettings library to reduce the text to a reasonable size, as when I add the <meta name='viewport' content='initial-scale=1.0' /> header, it displays very...