Tutorials & Examples

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...

 

Hello!

As already told in another thread, i'm working on a navigation app using Google Maps API in combination with Google Directions http-requests for routing.

The http-Requests looks as...

 

Starting from August 2019 for new apps and November 2019 for updates, Google Play requires apps to set targetSdkVersion to 28.

The tutorial was updated with information related to API level 28...

 

This example demonstrates how you can use an OCR web service to recognize text in camera images.

The program allows you to take a picture and then send it to OCRWebService.

OCRWebService...

 

Adafruit IO is a cloud service built for IoT solutions. It provides two interfaces: MQTT and REST API. It is very simple to use it with B4X as demonstrated in this example.

It is more than...

 

B4XDialog from XUI Views library can show simple dialogs, template based dialogs and custom dialogs.

The example...

 

Depends on B4XTable v1.01+

It is very simple to add your own navigation features.

Code:

Sub btnNext_Click...

 

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...

 

Good afternoon, I contribute to the community with a small example of the class B4XDrawer with material icons and fontawesome icons.

Thanks to the whole...

 

Hi,

in this tutorial i will show you how to add an in app product to your android app.

There is an official tutorial by @Erel so you should also check that out...

 

Sources used:
Main sources:
https://medium.com/@ssaurel/how-to-...r-a-crash-or-a-force-close-error-1a361677c0ce...

 

Here is a method using FTP to create a trial period for your app. Since there is no local file with trial information, the user cannot defeat it by manipulating stored data. Also, FTP calls are...

 

Using Kotlin libraries is similar to using Java libraries. The only difference is that we need to add references to two...

 

Hi everyone,

After a week I have finally figured it out how to add a custom font for the whole application without any library or extra code.

Here is the solution:

1. Create a folder...

 

Hello, excited to share my humble code, which can be used as a two-factor authentication or a secondary login. For this take as an example the use of the bank coordinates card, which allows you...

 

Hallo,

from time to time someone is asking on how to create a pdf with b4a.
I dont know how to do that ONLY with b4a.

Today i spend a few hours to write a b4a-example and a php-script which...

 

* This ads are still not available to all developers.

The code of the example are based in this code from @Erel (Thanks!)...

 

AdMob supports ads mediation. This means that the ad can come from different ad networks and not just from Google AdMob network.

It can improve the fill rate and the revenue earned.

...

 

The creation of layouts is very easy with the B4A Designer.

With more complex forms, however, it can happen that the result looks a bit weird. Usually the heights or distances between the...

 

Android 4.2 includes a new powerful screen saver feature named Daydream.

A "dream" starts when the device is docked or charged and the screen timeouts. By default dreams are non-interactive...