Tutorials & Examples

1. This tutorial is about BitmapCreator v3.5+.
2. It is relevant for B4A, B4i and B4J.
3. The features discussed are only needed when making hundreds or more drawings per second.

Drawing...

 

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...

 

This is a new feature added in B4A v8.0.

Starting from Android 8.0, services cannot be simply started while the app is in the background or not running at all. Background means that there isn't...

 

XUI library v1.4 adds support for asynchronous msgbox dialogs.

The API is simple:

xui.MsgboxAsync("Hello", "World")...

 

today i was in the requrement to write a search-routine in Database.
given was a table with lat an lon values. Goal was to find the nearest Entry.

Tablename: nw05
Fields: gidx (index), glat...

 

B4A Bridge connect to MEMU? Yes, you can.
Follow all instruction from this video:
I tested and work!!! (see images attached)

Thanks for TechAndMore (YouTube)

 

Small update: I use Download2 instead of Poststring now. It handles some things for us like removing illegal space, etc. Otherwise some examples wont work as decribed.


Part 1...

 

I often use Sqlite for my apps and I came across "DB Browser". It's a free tool to browse and edit SQlite databases and tables. Download it from here: http://sqlitebrowser.org/ For B4J apps...

 

I've just wasted an hour trying to understand why a desktop program that I'm using for many months failed to upload a file to a FTP server.
I realized that the only thing that was recently changed...

 

Old and irrelevant tutorial. Follow this one instead: [B4X] Net library (FTP, SMTP, POP) with Wait For

This tutorial covers the FTP object which is part of the Net library.
The Net...

 

Now and then there are JavaObject code snippets posted in the forum. Usually there are permissions required listed together with the code, but not always. Which could be because none are needed...

 

used library: ByteConverter 1.10, Core 8.0, RandomAccessFile 2.32, Reflexion 2.4 , USB 0.98
digital input only for this demo

 

Related Libraries:
B4A Dropbox SDK V2
B4J Dropbox SDK V2

You need to know/remember the dropboxId of the account you are actually using/requesting. And the latest cursor.
Use...

 

It is recommended to use TabStripViewPager for new projects: https://www.b4x.com/android/forum/threads/63975/#content


The TabHost view is a very important view. It allows you to add...

 

Using the phone accelerometer it is possible to handle shake events.
The problem is of course to decide if the stream of values represents a shake.

The Shake code module finds shake patterns and...

 

followed_mission for dji phantom 3 standard DJIV2.5 library

 

Of course there is more about to secure data transmissions between clients & servers. Please take this tutorial to think about to secure your communication as good as you can.


With...

 

Old tutorial. Don't use services. Use receivers.
Broadcast receivers are program components that can handle broadcasted messages. These messages usually notify about a system event.

There...

 

Edit: Google AdMob does support rewarded ads without mediation.
You can use this unit id to test it: rewardAd.LoadAd("ca-app-pub-3940256099942544/5224354917")
Make sure to use FirebaseAdMob...

 

As stated on THIS thread, the current SDK Manager (3.20) will display an error, to fix it, you will have to recompile it using the source code posted HERE and modify line 158

From...