Android Library Project -

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how can use android library project, , overwrite classes in "final project".

in other words, want reference library project, , @ same time, change of code..

probably not quite android library projects achieve using interface , class inheritance features of java language itself.

library project seem deal merging/overriding resources parent in child , letting use 1 codebase varying app package names.

given updated comment using library projects have 1 edition of app uses admob , 1 doesnt, i've revised answer...

assuming dont mind packaging admob library (~138kb) in full/paid edition, simplest thing extend applcation class , therein declare enum , static method decide whether admob ads should shown. 

public class application extends android.app.application {         public enum editiontype { lite, full};           public static int getadvisibilityforedition(context ctx)     {        if (editiontype.valueof(ctx.getstring(r.string.edition)) == editiontype.full)        {         return view.gone;        }        return view.visible;     } }

you'll add class library project only. in 3 of projects you'll need add entry /res/strings.xml such:

<?xml version="1.0" encoding="utf-8"?> <resources>     <string name="edition">lite</string> </resources>

it doesnt matter value of string in library project, you'll vary in paid vs. ad supported editions using full , lite respectively.

finally, make activities responsive these values call in oncreate() or onresume():

view ad = (view)this.findviewbyid(r.id.your_admob_view_id) ad.setvisibility(application.getadvisibilityforedition                  (this.getapplicationcontext()));

this work fine admob admob code wont try ad if view not visible.

if dont want have 138k admob jar , manifest permissions needed in full edition, there more elegant ways involve using kind of wrapper around admob stuff , either varying xml layouts between editions (to include admob view or not) or inject admob view layout programatically.

hope helps.


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