content: /*
   * Copyright (C) 2016 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   */
  package com.example.hellojnicallback;
  
  import android.os.Build;
  import androidx.annotation.Keep;
  import android.util.Log;
  
  /*
   * A helper class to demo that JNI could call into:
   *     private non-static function
   *     public non-static function
   *     static public function
   * The calling code is inside hello-jnicallback.c
   */
  public class JniHandler {
      /*
       * Print out status to logcat
       */
      @Keep
      private void updateStatus(String msg) {
          if (msg.toLowerCase().contains("error")) {
              Log.e("JniHandler", "Native Err: " + msg);
          } else {
              Log.i("JniHandler", "Native Msg: " + msg);
          }
      }
  
      /*
       * Return OS build version: a static function
       */
      @Keep
      static public String getBuildVersion() {
          return Build.VERSION.RELEASE;
      }
  
      /*
       * Return Java memory info
       */
      @Keep
      public long getRuntimeMemorySize() {
          return Runtime.getRuntime().freeMemory();
      }
  }
  