app/src/main/java/me/zhanghai/android/douya/network/Volley.java

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/*
 * Copyright (c) 2015 Zhang Hai <Dreaming.in.Code.ZH@Gmail.com>
 * All Rights Reserved.
 */

package me.zhanghai.android.douya.network;

import android.content.Context;

import com.android.volley.RequestQueue;
import com.android.volley.toolbox.Authenticator;
import com.android.volley.toolbox.DiskBasedCache;
import com.android.volley.toolbox.HttpStack;

import java.io.File;

import me.zhanghai.android.douya.DouyaApplication;
import me.zhanghai.android.douya.account.info.AccountContract;
import me.zhanghai.android.douya.account.util.AccountUtils;

public class Volley {

    private static final Volley INSTANCE = new Volley();

    private Authenticator mAuthenticator;
    private RequestQueue mRequestQueue;

    public static Volley getInstance() {
        return INSTANCE;
    }

    private Volley() {
        createAuthenticatorForActiveAccount();
        createAndStartRequestQueue();
    }

    private void createAuthenticatorForActiveAccount() {
        Context context = DouyaApplication.getInstance();
        mAuthenticator = new SynchronizedAndroidAuthenticator(context,
                AccountUtils.getActiveAccount(), AccountContract.AUTH_TOKEN_TYPE, true);
    }

    public void notifyActiveAccountChanged() {
        createAuthenticatorForActiveAccount();
    }

    public Authenticator getAuthenticator() {
        return mAuthenticator;
    }

    /**
     * @see com.android.volley.toolbox.Volley#newRequestQueue(Context, HttpStack, int)
     */
    private void createAndStartRequestQueue() {
        mRequestQueue = new RequestQueue(new DiskBasedCache(new File(
                DouyaApplication.getInstance().getCacheDir(), "volley")), new BasicNetwork(
                new HurlStack()));
        mRequestQueue.start();
    }