com.badou.mworking.net.bitmap.BitmapLruCache.java Source code

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Here is the source code for com.badou.mworking.net.bitmap.BitmapLruCache.java

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/**
 * Copyright 2013 Ognyan Bankov
 * <p/>
 * 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
 * <p/>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p/>
 * 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.badou.mworking.net.bitmap;

import android.app.ActivityManager;
import android.content.Context;
import android.graphics.Bitmap;
import android.support.v4.util.LruCache;

import com.android.volley.toolbox.ImageLoader.ImageCache;

public class BitmapLruCache extends LruCache<String, Bitmap> implements ImageCache {

    private final String SUFFIX_CIRCLE = "Circle"; // 
    private final String SUFFIX_ORIGIN = "origin"; // 

    public BitmapLruCache(int maxSize) {
        super(maxSize);
    }

    @Override
    protected int sizeOf(String key, Bitmap value) {
        return value.getRowBytes() * value.getHeight();
    }

    @Override
    public Bitmap getBitmap(String url) {
        if (url == null || "".equals(url)) {
            return null;
        }
        return get(url);
    }

    public Bitmap getCircleBitmap(String url) {
        if (url == null || "".equals(url)) {
            return null;
        }
        return get(url + SUFFIX_CIRCLE);
    }

    public void putCircleBitmap(String url, Bitmap bitmap) {
        if (bitmap == null || bitmap.isRecycled()) {
            remove(url + SUFFIX_CIRCLE);
        } else {
            put(url + SUFFIX_CIRCLE, bitmap);
        }
    }

    public Bitmap getOriginBitmap(String url) {
        if (url == null || "".equals(url)) {
            return null;
        }
        return get(url + SUFFIX_ORIGIN);
    }

    public void putOriginBitmap(String url, Bitmap bitmap) {
        if (bitmap == null || bitmap.isRecycled()) {
            remove(url + SUFFIX_ORIGIN);
        } else {
            put(url + SUFFIX_ORIGIN, bitmap);
        }
    }

    @Override
    public void putBitmap(String url, Bitmap bitmap) {
        if (bitmap == null || bitmap.isRecycled()) {
            remove(url);
        } else {
            put(url, bitmap);
        }
    }

    public void removeCircle(String url) {
        remove(url + SUFFIX_CIRCLE);
    }

    public static void init(Context context) {
        int memClass = ((ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE)).getMemoryClass();
        // Use 1/8th of the available memory for this memory cache.
        int cacheSize = 1024 * 1024 * memClass / 8;
        mBitmapLruCache = new BitmapLruCache(cacheSize);
    }

    public static BitmapLruCache getBitmapLruCache() {
        if (mBitmapLruCache == null) {
            throw new IllegalStateException("ImageLoader not initialized");
        } else {
            return mBitmapLruCache;
        }
    }

    private static BitmapLruCache mBitmapLruCache;
}