GlideConfigurationModule.java

package com.dailyupfitness.common.configuration;

import android.app.ActivityManager;
import android.content.Context;

import com.bumptech.glide.Glide;
import com.bumptech.glide.GlideBuilder;
import com.bumptech.glide.load.DecodeFormat;
import com.bumptech.glide.load.model.GenericLoaderFactory;
import com.bumptech.glide.load.model.Headers;
import com.bumptech.glide.load.model.LazyHeaders;
import com.bumptech.glide.load.model.ModelLoaderFactory;
import com.bumptech.glide.load.model.stream.BaseGlideUrlLoader;
import com.bumptech.glide.load.model.stream.StreamModelLoader;
import com.bumptech.glide.module.GlideModule;

import java.io.InputStream;

/**
 * Glide configurations
 * Created by zhangge on 16/10/14.
 */

public class GlideConfigurationModule implements GlideModule {

    static final String USER_AGENT = "Mozilla/5.0 (Windows NT 5.2; rv:2.0.1) Gecko/20100101 Firefox/4.0.1";
    static final String APP_AGENT = "DailyUp";

    @Override
    public void applyOptions(Context context, GlideBuilder builder) {
        ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
        if (null != activityManager) {
            ActivityManager.MemoryInfo memoryInfo = new ActivityManager.MemoryInfo();
            activityManager.getMemoryInfo(memoryInfo);
            builder.setDecodeFormat(memoryInfo.lowMemory ?
                    DecodeFormat.PREFER_RGB_565 : DecodeFormat.PREFER_ARGB_8888);
        }
    }

    @Override
    public void registerComponents(Context context, Glide glide) {
        glide.register(String.class, InputStream.class, new HeaderLoader.Factory());
    }

    private static class HeaderLoader extends BaseGlideUrlLoader<String> {
        static final Headers HEADERS = new LazyHeaders.Builder()
                .addHeader("User-Agent", USER_AGENT)
                .addHeader("App-Agent", APP_AGENT)
                .build();

        HeaderLoader(Context context) {
            super(context);
        }

        @Override protected String getUrl(String model, int width, int height) {
            return model;
        }

        @Override protected Headers getHeaders(String model, int width, int height) {
            return HEADERS;
        }

        public static class Factory implements ModelLoaderFactory<String, InputStream> {
            @Override public StreamModelLoader<String> build(Context context, GenericLoaderFactory factories) {
                return new HeaderLoader(context);
            }
            @Override public void teardown() { /* nothing to free */ }
        }
    }
}