com.kakao.GlobalApplication.java Source code

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Here is the source code for com.kakao.GlobalApplication.java

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/**
 * Copyright 2014 Kakao Corp.
 *
 * Redistribution and modification in source or binary forms are not permitted without specific prior written permission.
 *
 * 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.kakao;

import android.app.Application;
import android.graphics.Bitmap;
import android.support.v4.util.LruCache;
import com.android.volley.RequestQueue;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.Volley;
import com.kakao.helper.SystemInfo;
import com.kakao.helper.Utility;

/**
 * ? ?  ?   ? ??.
 *
 * @author MJ
 */
public class GlobalApplication extends Application {
    static final String APP_KEY_PROPERTY = "com.kakao.sdk.AppKey";
    private static volatile GlobalApplication instance = null;
    private ImageLoader imageLoader;
    private String appKey;

    /**
     * singleton ? ? .
     * @return singleton ? ?
     */
    public static GlobalApplication getGlobalApplicationContext() {
        if (instance == null)
            throw new IllegalStateException("this application does not inherit com.kakao.GlobalApplication");
        return instance;
    }

    /**
     * ? ?, ? ?,  ?? .
     */
    @Override
    public void onCreate() {
        super.onCreate();
        instance = this;
        SystemInfo.initialize();
        final RequestQueue requestQueue = Volley.newRequestQueue(this);

        ImageLoader.ImageCache imageCache = new ImageLoader.ImageCache() {
            final LruCache<String, Bitmap> imageCache = new LruCache<String, Bitmap>(3);

            @Override
            public void putBitmap(String key, Bitmap value) {
                imageCache.put(key, value);
            }

            @Override
            public Bitmap getBitmap(String key) {
                return imageCache.get(key);
            }
        };

        imageLoader = new ImageLoader(requestQueue, imageCache);
        appKey = Utility.getMetadata(this, APP_KEY_PROPERTY);
    }

    /**
     * ? ? .
     * @return ? ?
     */
    public ImageLoader getImageLoader() {
        return imageLoader;
    }

    public String getAppKey() {
        return appKey;
    }

    /**
     * ?  singleton ? ? .
     */
    @Override
    public void onTerminate() {
        super.onTerminate();
        instance = null;
    }
}