title: No implementation found when i use .so file android
body: <p>i want to use native library from other project. here is my library.
  <img src="https://i.stack.imgur.com/xkjn2.png" alt=".so library"></p>
  
  <p>it is my first time to use ndk in android studio. i succedd to load library .so, but failed when i want to access the file. here is the error
  <img src="https://i.stack.imgur.com/E4DFB.png" alt="error description"></p>
  
  <p>here is my java code that load the library.
  <img src="https://i.stack.imgur.com/ROIGN.png" alt="jni"></p>
  
  <p>here is my main java code 
  <img src="https://i.stack.imgur.com/gHoh1.png" alt="main"></p>
  
  <p>can you solve my problem? thanks</p>