Building libraries for external SDK's

[bluedude]

Hi,

There are a lot of external API's popping up and I would love to develop some libraries for it. Does anyone have source code for a sample library based on an external SDK? Maybe the Xtify demo or something else?

Building libraries for these SDK's would rapidly extend B4A and I think that is needed. Re-inventing the wheel is waste of time, I rather use what is proven.

Cheers,

 

[Erel]

Here is the code of the Google Analytics library (without the javadocs):

package anywheresoftware.b4a.objects;
import com.google.android.apps.analytics.GoogleAnalyticsTracker;

import anywheresoftware.b4a.BA;
import anywheresoftware.b4a.BA.ActivityObject;
import anywheresoftware.b4a.BA.Permissions;
import anywheresoftware.b4a.BA.ShortName;
import anywheresoftware.b4a.BA.Version;
import anywheresoftware.b4a.keywords.Common;

@Version(1.0f)
@ShortName("AnalyticsTracker")
@Permissions(values={"android.permission.INTERNET", "android.permission.ACCESS_NETWORK_STATE"})
public class AnalyticsTracker {

   public void Initialize(String AccountId, int DispatchPeriod) {
      GoogleAnalyticsTracker.getInstance().startNewSession(AccountId, DispatchPeriod, BA.applicationContext);
   }

   public void Initialize2(String AccountId) {
      GoogleAnalyticsTracker.getInstance().startNewSession(AccountId, BA.applicationContext);
   }

   public void TrackPageView(String Page) {
      GoogleAnalyticsTracker.getInstance().trackPageView(Page);
   }

   public void TrackEvent(String Category, String Action, String Label, int Value) {
      GoogleAnalyticsTracker.getInstance().trackEvent(Category, Action, Label, Value);
   }

   public boolean Dispatch() {
      return GoogleAnalyticsTracker.getInstance().dispatch();
   }

   public void Stop() {
      GoogleAnalyticsTracker.getInstance().stopSession();
   }
}

The trick is to create an empty XML file for the wrapped library (libGoogleAnalytics.xml):

<?xml version="1.0" encoding="UTF-8"?>
<root>
    <doclet-version-NOT-library-version>1.00</doclet-version-NOT-library-version>
    <version>1.0</version>
</root>

 

[bluedude]

Would you happen to have the full Eclipse project for this so I could learn from it?

 

[Erel]

I cannot export the complete project. Sorry. However it is a really simple one:

 

[bluedude]

Erel,

Clear. One question, where to put the libGoogleAnalytics.jar?

 

[bluedude]

I mean, in your screenshot it has no path attached when referencing.

 

[Erel]

The best place to put it is in the main folder of your java project. Then right click on the project and choose Refresh.

The next step is right click on project - Configure Paths - add the jar to the project.

 

[avacondios]

Hi Erel,

I am trying to execute this example, but I am getting errors when I am executing the application that it cannot find the libGoogleAnalytic.jar. Can you explain to us, where we need to copy the external jar files which we have already referenced to eclipse ?

 

[wl]

There is a youtube movie on how to create external libraries for Basic4Android. I still need to see it and create a library myself though:

Basic4android Tutorial - Creating a library - YouTube

A tutorial can be found here: http://www.b4x.com/forum/libraries-developers-questions/6810-creating-libraries-basic4android.html

 

[Erel]

I am trying to execute this example, but I am getting errors when I am executing the application that it cannot find the libGoogleAnalytic.jar. Can you explain to us, where we need to copy the external jar files which we have already referenced to eclipse ?

Are you trying to build a library or to use the existing one?

 

[avacondios]

Hi Erel,

I tried to use reference library from eclipse. The issue was that I did not used the statement @DependsOn(values={"library name") !!!!, so I had exception that the application cannot find the library. At least I found that.

Thanks a lot