Java Question some puzzleds with develop library

icefairy333 · Aug 10, 2012

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 · Aug 10, 2012

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 · Aug 11, 2012

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 · Aug 11, 2012

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

icefairy333 · Aug 14, 2012

this code worked ok！

B4X:

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:

B4X:

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 · Aug 14, 2012

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 · Aug 14, 2012

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

Java Question some puzzleds with develop library

icefairy333

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Erel

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icefairy333

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Erel

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icefairy333

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Erel

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icefairy333

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Java Question some puzzleds with develop library

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