How to use the new Version of System Library?

[Gazyu]

I want to use a new version of the system library.

So I wrote the following code.

ReLinker.loadLibrary(context, "abcedf", "1.0.10");

But I could not get good results.

I found the cause by reading the source code.

    private void loadLibraryInternal(final Context context,
                                     final String library,
                                     final String version) {
        if (loadedLibraries.contains(library) && !force) {
            log("%s already loaded previously!", library);
            return;
        }

        try {
            libraryLoader.loadLibrary(library);
            loadedLibraries.add(library);
            log("%s (%s) was loaded normally!", library, version);
            return;
        } catch (final UnsatisfiedLinkError e) {
            // :-(
            log("Loading the library normally failed: %s", Log.getStackTraceString(e));
        }

If a system library exists, it will be loaded without version checking.

Could you tell me how to check the version even if there is a system library?
Thanks in advance.

[ajalt]

If I understand what you're asking, you want to load a library even if a version of it is already loaded? In that case, you can use Relinker.force(). For example, ReLinker.force().loadLibrary(context, "abcedf", "1.0.10")

[Gazyu]

@ajalt
Thank you for your reply.
I try to use Relinker.force() . But I can not get success.
I want to load our new version of the library even when there is a same system library of old version(that is /system/lib/libabcdef.so ).

I found that Relinker source code does not load new version library If there is a same library of old version in /system/lib/.

[ajalt]

Ah, ok. In that case, Relinker is behaving as expected. To quote from the readme:

In the case that the system handles the library loading appropriately, the version specified is not used as all library files are extracted and replaced on update or install.

[AmitKaushikGIT]

Relinker does not do anything to extra to load system library, just uses System.loadLibrary(), for your custom libraries the manual install of library with version can be used.