Java Question some puzzleds with develop library

[icefairy333]

1.what's the differents between BA object,sharedProcessBA how to distinguish them?
2.how to wrap an library when it needs a linearlayout for parameter?
that's all thanks :sign0085:

 

[Erel]

1. You should not access sharedProcessBA in your code. Only BA, BA.context or BA.activity.

2. You will need to somehow create the LinearLayout object.

 

[icefairy333]

1,somewhere I had to access with sharedProcessBA,for example I want to change the attribs of window,when I use BA,the code will cause many kinds of error,then I use jd-gui to saw the core.jar I found that you call the sharedProcessBA,so I copy the code to my lib it works.
2,yesterday I new a object of linearlayout then call ba.activity.addcontentview to pass the object,compile ok,when call it in b4a the b4a get a NullPointerExecption

 

[Erel]

Basic4android doesn't do anything special with objects passed. The error is somewhere else.

 

[icefairy333]

this code worked ok！

public void ShowBanner(int x,int y,int width,int height,int gravity,int refushsecond){
   WeakReference w = ba.sharedProcessBA.activityBA;
     Activity act1=((BA)w.get()).activity;
   LinearLayout container =new LinearLayout(act1);
   LayoutParams lp1=new LayoutParams();
   lp1.x=x;
   lp1.y=y;
   lp1.height=height;
   lp1.width=width;
   lp1.gravity=gravity;
   UUAppConnect.getInstance(ba.context).showBanner(container , refushsecond);
   act1.addContentView(container, lp1);
}

but this one cause a NullPointException:

public void ShowBanner(int x,int y,int width,int height,int gravity,int refushsecond){
   LinearLayout container =new LinearLayout(act1);
   LayoutParams lp1=new LayoutParams();
   lp1.x=x;
   lp1.y=y;
   lp1.height=height;
   lp1.width=width;
   lp1.gravity=gravity;
   UUAppConnect.getInstance(ba.context).showBanner(container , refushsecond);
   ba.activity.addContentView(container, lp1);
}

 

[Erel]

You should mark your object with @ActivityObject. You will then be able to access the activity by calling ba.activity.

It can also be the cause for the error if UUAppConnect expects an Activity context.

 

[icefairy333]

Good! Now I know the differents with the "@ActivityObject" thank you very much!