android volley

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package com.jh.rental.user.model;import android.graphics.Bitmap;import android.text.TextUtils;import android.widget.ImageView;import com.android.volley.Request;import com.android.volley.RequestQueue;import com.android.volley.toolbox.ImageLoader;import com.android.volley.toolbox.Volley;import com.jh.rental.user.utils.jason.BaseContext;/** * Created by 骏辉出行 on 2017/5/25. */compile 'com.mcxiaoke.volley:library:1.0.19'
public class HttpVolley {    public static final String TAG = HttpVolley.class.getSimpleName();    private RequestQueue mRequestQueue;    private ImageLoader mImageLoader;    private static HttpVolley mInstance;    public static synchronized HttpVolley getInstance() {           if (mInstance==null){               mInstance=new HttpVolley();           }        return mInstance;    }    public RequestQueue getRequestQueue() {        if (mRequestQueue == null) {            mRequestQueue = Volley.newRequestQueue(BaseContext.context);        }        return mRequestQueue;    }    public ImageLoader getImageLoader() {         if (mImageLoader == null) {            mImageLoader = new ImageLoader(getRequestQueue(), new LruBitmapCache());        }        return mImageLoader;    }   public void loadImageView(String url,final ImageView imageView){       ImageLoader.ImageListener listener = ImageLoader.getImageListener(imageView, 0, 0);       ImageLoader imageLoader = new ImageLoader(getRequestQueue(), new ImageLoader.ImageCache() {           @Override           public void putBitmap(String url, Bitmap bitmap) {               imageView.setImageBitmap(bitmap);           }           @Override           public Bitmap getBitmap(String url) {               return null;           }       });       imageLoader.get(url,listener);   }    public <T> void addToRequestQueue(Request<T> request, String tag) {        request.setTag(TextUtils.isEmpty(tag) ? TAG : tag);        getRequestQueue().add(request);    }    public <T> void addToRequestQueue(Request<T> request) {        request.setTag(TAG);        getRequestQueue().add(request);    }    public void cancelPendingRequests() {        if (mRequestQueue != null) {            mRequestQueue.cancelAll(TAG);        }    }}
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