how to handle multiple application classes in android

Question

I am developing a native android application, in which I am trying to use 2 open-source libraries. Problem is both the libraries are using Application Class in their respective libraries. They are registering these classes in their respective source code in manifest file using "android:name" under the application tag. Question is how to handle such a scenario, since as we know, only ONE tag can be used inside manifest file. Can we register/instantiate the Application Class in the code, so that we mention only ONE library in tag and the second using code/pragmatically. OR are there any other alternatives. Please share your comments/suggestions. Thanks in advance.

your scenario is like "ApplicationLib1 extends Application" , "ApplicationLib2 extends Application" and "YourApplication extends Application" ? — Biraj Zalavadia, Sep 25 '13 at 10:08
You need to implement Multilevel inheritance to resolve this scenario. — Biraj Zalavadia, Sep 25 '13 at 10:13
@BirajZalavadia And what we can do if libraries were jar?! In this case we can't write something like this: public Lib2Application extends Lib1Application! — Dr.jacky, Jun 20 '14 at 13:11

score 56 · Accepted Answer · answered Sep 25 '13 at 10:18

56

You need to implement Multilevel inheritance to resolve this scenario.

This is your scenario

public Lib1Application extends Application{

}

public Lib2Application extends Application{

}

public YourApplication extends Application{

}

How to resolve this?

public Lib1Application extends Application{

    }

    public Lib2Application extends Lib1Application{

    }

    public YourApplication extends Lib2Application{

    }

finally in mainfest.xml

<application
        android:name="com.your.packagename.YourApplication"
        android:icon="@drawable/ijoomer_luncher_icon"
        android:label="@string/app_name"
 >

answered Sep 25 '13 at 10:18

Biraj Zalavadia

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how can i use lib2Application class.. please give me an example? – Sunny Nov 21 '13 at 11:02
Some times you will need to implement it in several places in The Manifest: – ahmedibrahim085 May 25 '14 at 14:18
2

And what we can do if libraries were jar?! In this case we can't write something like this: public Lib2Application extends Lib1Application ! – Dr.jacky Jun 20 '14 at 13:11
@ Mr.Hyde your point is very nice. Need some more steps to make it work even it is inside .jar files. Just create a separate question and get me the link for that. – Biraj Zalavadia Jun 23 '14 at 04:05
@BirajZalavadia Please look at http://stackoverflow.com/questions/24452509 – Dr.jacky Nov 11 '16 at 12:10

score 1 · Answer 2 · answered Sep 25 '13 at 10:28

Only the manifest and application elements are required, they each must be present and can occur only once. Most of the others can occur many times or not at all — although at least some of them must be present for the manifest to accomplish anything meaningful. See this link: http://developer.android.com/guide/topics/manifest/manifest-intro.html#filec

how to handle multiple application classes in android

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