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Thread: Do I need JNI for my C++ library when deploying to Android?

  1. #1
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    Default Do I need JNI for my C++ library when deploying to Android?

    On Linux(Ubuntu) my Qt Creator(5.4.1) application links in my own C++ external library (.so file) and runs with no problems.

    Now, when I want to switch kits to Android and deploy it to Android, then I would need to recompile my .so library file for Android architecture. My question is, do I need to create a JNI wrapper for my external library for it to be used with my Qt Creator application on Android?

    Also, forget about my library for a moment, to help me understand it better, under the covers, is Qt using JNI to call its libraries?

    Previously, I was using Eclipse with ADT to create a library for Android, but now that is deprecated and the preferred way is to use Android Studio to create a library for Android. Is this the general consensus?

    Thanks

  2. #2
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    Default Re: Do I need JNI for my C++ library when deploying to Android?

    Quote Originally Posted by ColGeorgeTaylor View Post
    Now, when I want to switch kits to Android and deploy it to Android, then I would need to recompile my .so library file for Android architecture. My question is, do I need to create a JNI wrapper for my external library for it to be used with my Qt Creator application on Android?
    I would think this depends in the language the application is using. If the application is using C++ then it can obviously direclty link against any C++ library.
    If the application is being written in Java, it will need some bridge code to link to the library.

    Quote Originally Posted by ColGeorgeTaylor View Post
    Also, forget about my library for a moment, to help me understand it better, under the covers, is Qt using JNI to call its libraries?
    Not sure what you mean, Qt is "the libraries".

    Cheers,
    _

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