bind/java/LoadJNI.java

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package go;

import android.app.Application;
import android.content.Context;

import java.util.logging.Logger;

// LoadJNI is a shim class used by 'gomobile bind' to auto-load the
// compiled go library and pass the android application context to
// Go side.
//
// TODO(hyangah): should this be in cmd/gomobile directory?
public class LoadJNI {
        private static Logger log = Logger.getLogger("GoLoadJNI");

        public static final Object ctx;

        static {
                System.loadLibrary("gojni");

                Object androidCtx = null;
                try {
                        // TODO(hyangah): check proguard rule.
                        Application appl = (Application)Class.forName("android.app.AppGlobals").getMethod("getInitialApplication").invoke(null);
                        androidCtx = appl.getApplicationContext();
                } catch (Exception e) {
                        log.warning("Global context not found: " + e);
                } finally {
                        ctx = androidCtx;
                }
        }
}