not found libmylib.so file

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.fly.apkencryptor, PID: 20650
    java.lang.UnsatisfiedLinkError: dlopen failed: library "/data/data/com.fly.apkencryptor/lib/libmylib.so" not found
        at java.lang.Runtime.load0(Runtime.java:909)
        at java.lang.System.load(System.java:1537)
        at com.fly.apkencryptor.application.MyApp.attachBaseContext(MyApp.java:81)