Tutorials & Examples

Android development starts here. Please do not post questions in this sub-forum.

send and receive messages between two devices or Device and PC using bluetooth

1. Looking for application sample b4A to send and receive text messages (chat system) over blue tooth between two mobiles

2. Looking for application sample b4A to receive messages and reply over...
 

StateListDrawable example

StateListDrawable is a drawable objects that holds other drawables. Based on the view's current state a child drawable is selected.
StateListDrawable holds a list of states. States can be...
 

Create online theme

Hi,
I found a site that create style and theme for your app.
You can select color and views and android sdk and other
It return res folder for you that can use in your app.
For use theme in your...
 

Have Back and Front Camera's & has Flash (inline Java code)

This is just some simple inline Java code to check if a device has a Back facing camera, a Front facing camera, and a Flash (it requires the JavaObject library to be enabled).

1.png
...
 

Attachments

  • b4aHasFrontBackCameraAndFlash.zip
    8.8 KB · Views: 917

Comparison Operators in Select Case

Just a small request for the wishlist. It would be nice to be able to use Select Case using the 'greater than' and 'less than' operators <>. It makes for cleaner code than 'if' 'else' and 'end if'...
 

B4X - The best development tools for the connected world!

As B4R (Arduino) will soon be released, I've made a short video that shows some of the communication features available in B4X.

Make sure to watch it in HD mode:


The source...
 

Attachments

  • ConnectedWorld.zip
    25.5 KB · Views: 849

For beginners: How to communicate with a server using httputils2 (Part 3: php, MySql & JSON)

Attachments

  • Example_B4A.zip
    8.6 KB · Views: 3,183
  • php_example.zip
    552 bytes · Views: 2,793

Begin with the B4A Trial version

The B4A Trial Version allows to get a good impression of the possibilities of B4A.

The trial version is limited to 30 days.

Following steps are needed to use the trial version.

Two solutions...
 

keystore alias password

What is the keystore alias password? I know that alias is b4a but how about the password?
 

List with two columns and a checkbox

Hello,

I have a TabHost which holds 4 tabs.
I want to have a list with two columns and a checkbox for each line in the list on the forth tab of the TabHost.

How can I do it? In case it's...
 

MySQL: Load Excel Sheets (or other data) via .csv

Animation without timer

Hi Guys

I would like to share with you something that most of you maybe allready know but also if there are some people that still dont know that, it could be very helpfull for them.

There are...
 

Attachments

  • animation without timer.zip
    224.4 KB · Views: 2,020
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How to change the XML element in file and save it, using XOM library

I learned to read XML file, thank you all! Now I need to learn how to change XML elements and save it. file. For example is XML file

<?xml version="1.0" encoding="UTF-8"?>
<group>...
 

Currency Converter - Http web services and more

Attachments

  • CurrencyConverter.zip
    9.8 KB · Views: 3,252

[Root] Using ADB over WIFI : B4A Bridge alternative

Hello all ,

Main advantage for this method over B4a Bridge is that it fixed issue I faced after updating my Huawei Honor 6 to Android 5.1.1 and B4A IDE stopped getting logs from Bridge .After...
 

One App - Two Activities (or more) - Two launcher icons

For my latest wear app i needed two different launcher icons, each one starting one different activity of the same app. It's really easy to accomplish, it only needs to edit the manifest file...
 

Android Compatibility Definition Guide in pdf

Really don't know where to post this. Thought this may be a good place.

Anyway, I found this Android Compatibility Definition Guide in pdf-format which could be handy. Of course, you can find...
 

Service Modules

This is an old tutorial. Most of the information here is no longer correct.



Basic4android v1.2 adds support for Service modules.
Service modules play an important role in...
 
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Creating a Wear device avd / emulator

So, Google released the new Android Wear platform and obviously we all want to try it out. I have been very lucky and have managed to get my hands on a real device. A Samsung Gear Live to be...
 
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CallSubDelayed - Avoid Black Screen

This has plagued me for months... (drove me nuts!)

I would try to insert a record in a table within an activity (using CallSubDelayed2) - then start another activity and presented with a Black...
 
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