Android Question Convert Java code to b4x code

Chris Guanzon · May 6, 2020

Hello, can someone help me how to convert this to b4x code?

I've already read this https://www.b4x.com/android/forum/t...h-additionaljar-and-javaobject-picasso.40904/ .

I have no idea how to use it in b4a.

DonManfred · May 6, 2020

You need to use JavaObject or write a wrapper with java for this Api.
For both you need some java knowledge.

If you are not able to do it by yourself then you can create a thread in the JobForum and pay someone to do the Job.

Chris Guanzon · May 6, 2020

Thanks DonManfred, I am 0 knowledge in java, but i am willing to learn and willing to do it. I just need a guidance on how and where to start.

DonManfred · May 6, 2020

[java] Creating libraries for B4A

New video tutorial is available here: http://www.b4x.com/forum/libraries-developers-questions/12431-video-tutorial-creating-simple-library.html Basic4android has a very good support for external libraries. In fact almost all of the internal keywords are loaded from an external library (Core...

www.b4x.com

Post questions here:

Libraries developers questions

www.b4x.com

Chris Guanzon · May 6, 2020

Thanks, i really appreciate it. ?

Chris Guanzon · May 6, 2020

Hello sir DonManfred, i'm getting confused. Can i just use the #additionaljar like the post here https://www.b4x.com/android/forum/t...h-additionaljar-and-javaobject-picasso.40904/ ? because i have the .jar file and the documentation of the sdk. Will this work?

DonManfred · May 6, 2020

Chris Guanzon said:
like the post here https://www.b4x.com/android/forum/t...h-additionaljar-and-javaobject-picasso.40904/ ?

As seen in the post you need to use JavaObject to access the Methods.

Again: you need some java-knowledge.

Just adding it with AdditionalJar alone will not work.

OliverA · May 6, 2020

By the way, is this actual working code? ITYSmartPosApi is an abstract java class. No java expert here, but I did not think you can instantiate an abstract class. Looks like the class you should be using is TYSmartPosApi and its located at com.whty.smartpos.tysmartposapi.impl

Source to library:

Index of jcenter/com/whty/smartpos/tysmartposapi/maven/1.0.0

Info on Abstract classes:

Abstract Methods and Classes (The Java™ Tutorials > Learning the Java Language > Interfaces and Inheritance)

Java Abstraction

Data abstraction is the process of hiding certain details and showing only essential information to the user.

www.w3schools.com

Chris Guanzon · May 7, 2020

OliverA said:
By the way, is this actual working code? ITYSmartPosApi is an abstract java class. No java expert here, but I did not think you can instantiate an abstract class. Looks like the class you should be using is TYSmartPosApi and its located at com.whty.smartpos.tysmartposapi.impl

Source to library:

Index of jcenter/com/whty/smartpos/tysmartposapi/maven/1.0.0

Info on Abstract classes:

Abstract Methods and Classes (The Java™ Tutorials > Learning the Java Language > Interfaces and Inheritance)

Java Abstraction

Data abstraction is the process of hiding certain details and showing only essential information to the user.

www.w3schools.com

Hi @OliverA, is the method used in here https://www.b4x.com/android/forum/t...h-additionaljar-and-javaobject-picasso.40904/ works for me? Or i need to do a different approach?

By the way, is this actual working code?

yes it is.

DonManfred · May 7, 2020

Chris Guanzon said:
is the method used in here https://www.b4x.com/android/forum/t...h-additionaljar-and-javaobject-picasso.40904/ works for me?

You can use nearly every Api with JavaObject. Even this one.
I personally prefer writing a wrapper with Java.

Android Question Convert Java code to b4x code

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