Glide使用之配置缓存

配置类：

package com.itant.zhuling.tool.image.glide;

import android.content.Context;

import com.bumptech.glide.Glide;
import com.bumptech.glide.GlideBuilder;
import com.bumptech.glide.load.engine.bitmap_recycle.LruBitmapPool;
import com.bumptech.glide.load.engine.cache.InternalCacheDiskCacheFactory;
import com.bumptech.glide.load.engine.cache.LruResourceCache;
import com.bumptech.glide.load.engine.cache.MemorySizeCalculator;
import com.bumptech.glide.module.GlideModule;

/**
 * 混淆的话，要在proguard-rules.pro添加-keepnames class * 完整包名.CustomCachingGlideModule
 *
 */
public class CustomCachingGlideModule implements GlideModule {
    @Override
    public void applyOptions(Context context, GlideBuilder builder) {
        // 设置磁盘缓存为100M，缓存在内部缓存目录
        int cacheSize100MegaBytes = 104857600;
        builder.setDiskCache(
            new InternalCacheDiskCacheFactory(context, cacheSize100MegaBytes)
        );
        //builder.setDiskCache(
        //new ExternalCacheDiskCacheFactory(context, cacheSize100MegaBytes));

        // 20%大的内存缓存作为 Glide 的默认值
        MemorySizeCalculator calculator = new MemorySizeCalculator(context);
        int defaultMemoryCacheSize = calculator.getMemoryCacheSize();
        int defaultBitmapPoolSize = calculator.getBitmapPoolSize();

        int customMemoryCacheSize = (int) (1.2 * defaultMemoryCacheSize);
        int customBitmapPoolSize = (int) (1.2 * defaultBitmapPoolSize);

        builder.setMemoryCache( new LruResourceCache(customMemoryCacheSize));
        builder.setBitmapPool( new LruBitmapPool(customBitmapPoolSize));
    }

    @Override
    public void registerComponents(Context context, Glide glide) {
        // nothing to do here
    }
}
 
 
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清单文件application节点添加（name为配置文件完整包名，value的”GlideModule”为固定值。）：

<meta-data android:name="com.itant.zhuling.tool.image.glide.CustomCachingGlideModule"
            android:value="GlideModule"/>
 
 
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使用：

Glide.with(MeizhiActivity.this)
                            .load(item.getUrl())
                            .asBitmap()
                            .diskCacheStrategy(DiskCacheStrategy.ALL)// 缓存所有尺寸的图片
                            .thumbnail( 0.1f )//先加载原图大小的十分之一
                            .into(new SimpleTarget<Bitmap>(Target.SIZE_ORIGINAL, Target.SIZE_ORIGINAL) {
                        @Override
                        public void onResourceReady(Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {

                            int imageWidth = resource.getWidth();
                            int imageHeight = resource.getHeight();
                            // 减去间距
                            int height = (screenWidth - dividerWidth * 3) / 2 * imageHeight / imageWidth;
                            ViewGroup.LayoutParams para = iv_meizhi.getLayoutParams();
                            para.height = height;
                            para.width = (screenWidth - dividerWidth * 3) / 2;
                            iv_meizhi.setImageBitmap(resource);
                        }
                    });
 
 
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你还可以使用

.placeHloder(...)
.error(...)
 
 
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设置默认图片，由于我这里是在列表中使用，viewholder中已经处理并设置默认图片，就不使用这两个方法了。