Tutorials & Examples

This app save each image into a server via FTP
and if you want download all images to merge into a video

Esta App salva cada imagen en un servidor via FTP
y si lo deseas puedes bajar todas las...

 

Camera2 library is based on the Camera2 API introduced in Android 5 (API 21).
It is designed to work together with CamEx2 class.
It is supported by B4A v7.3+. The library will be included as...

 

in some langauges you can do something like

a=1000 _
  + 50

So _ means "continues on the next line"

Is there something similar in b4a?

 

I have a couple of apps I created in appinventor and signed with my key but when I try to use the same, working, key in B4A it gives me this error:

"jarsigner: Certificate chain not found for...

 

Could some Java guru kindly convert the following codes into B4A code for me, if possible, please? I would greatly appreciate it!

I'm looking for a reliable solution as a background service...

 

This example uses xCustomListView to implement a list of cards.

As the items layout is created with the designer, it is simple to implement any layout you like. You can also combine...

 

Sample project to intercept clicks and longclicks on images or text portions in a webview.

The test project was created, because it became necessary to find a suitable solution from the very much...

 

I know it has already been said that it is not easy to change colour of the progressbar.

but would this solution be possible to use within B4A?

How to Add Text Over a Progress Bar on...

 

During the basic training in Amir_RecyclerView (ARV), a small test project was created, which may help RV newcomers to familiarize themselves with RecyclerViews.

Topic: "React to...

 

This tutorial explains how the new conditional compilation feature can be used to change the app icon and the assets files based on the chosen build configuration.
See this tutorial for more...

 

Using the hooks feature it is possible to change the Activity theme at runtime.

The theme is set before the activity is actually shown. This means that in order to change the theme we need to...

 

B4A v6.80 adds several new features related to the ability to format rich strings.

CharSequence is a...

 

Hi i make this example how you can add Chart JS in your project.

Chart.js

Simple yet flexible JavaScript charting library for the modern web

www.chartjs.org

I was use this example...

 

Hi to all
Based on this link https://www.b4x.com/android/forum/threads/b4x-cross-platform-chat-layout-example.112649/#content
I have added MQTT.
It's a simple example that I want to share...

 

I hope this example helpful
It will check if the device is rooted or no.

 

If you want to check if the application is running on a Chromebook (for example to do some specific GUI reconfiguration to run in a resizable Window), you can use the following routine.
Hope it...

 

============= MANIFEST =====================

AddManifestText(
<uses-sdk android:minSdkVersion="5" android:targetSdkVersion="19"/>
<supports-screens android:largeScreens="true"...

 

Check Trial Period using Dropbox (first version, improved version in Post #2)

Hello,

I have tried to find a solution to solve the control of the trial period of an app using the...

 

Your app has been removed on Google Play.
Sample code for those who have previously installed the application not to use it again.

Sub Globals
    Dim job1 As HttpJob
    Dim xui as XUI
End...

 

This "galaxy" example simulates planets movements based on the gravity forces.

The purpose of this example is to demonstrate the usage of classes in a graphical program...