How to detect which library or code depends on a native library (libmupdf.so)

Question

I'm trying to reduce the APK of an android app. I found that there is a native library (libmupdf_java.so) used causes the APK to become larger than the expected size (It added 20MB extra size to the APK please check the attached image). The project has a lot of dependencies (and libraries) I couldn't find which library uses libmupdf_java.so.

Solutions I tried

• In .gradle(app) file

      exclude 'lib/armeabi-v7a/libmupdf_java.so'
      exclude 'lib/arm64-v8a/libmupdf.so'
      exclude 'lib/armeabi/libmupdf.so'
  }
  
  

The app builds successfully but I didn't know if it will fail during the runtime and crash or if it's successfully built means that all things are correct and no need to worry about any failure.

• In .gradle(app) file in release section of build types

ndk {
   abiFilters 'arm64-v8a'
}

The app builds successfully but I target only the ARMv8-A based CPUs instead of targeting all three architectures (armeabi-v7a, arm64-v8a, armeabi)

I don't know what's the best or preferred solution.

Gradle dependencies most of them are jar files. One of them may be using the libmupdf.so : Jar files names:

• DO_AndroidSDK_v2.4.9.jar
• BixolonPrinterV234.jar
• ZSDK_ANDROID_API.jar
• commons-io-2.2.jar
• commons-net-3.0.1.jar
• commons-validator-1.4.0.jar
• httpcore-4.3.jar
• jackson-core-2.2.3.jar
• httpmime-4.3.2.jar
• jackson-annotations-2.2.3.jar
• jackson-databind-2.2.3.jar
• opencsv-2.2.jar
• jackson-core-2.2.3.jar
• snmp6_1.jar

Please, help me if you could.