Notification的构造函数中只支持使用资源文件的图片作为图片，但是如果我们想用网络中的图片怎么办呢。
我们知道，给Notification设置内容的时候调用的是setLatestEventInfo方法，当我们点击去看该方法的时候，所有的结果都一目了然了。
public void setLatestEventInfo(Context context,CharSequence contentTitle, CharSequence contentText, PendingIntent contentIntent) {// TODO: rewrite this to use BuilderRemoteViews contentView = new RemoteViews(context.getPackageName(),R.layout.notification_template_base);if (this.icon != 0) {contentView.setImageViewResource(R.id.icon, this.icon);}if (priority < PRIORITY_LOW) {contentView.setInt(R.id.icon,"setBackgroundResource", R.drawable.notification_template_icon_low_bg);contentView.setInt(R.id.status_bar_latest_event_content,"setBackgroundResource", R.drawable.notification_bg_low);}if (contentTitle != null) {contentView.setTextViewText(R.id.title, contentTitle);}if (contentText != null) {contentView.setTextViewText(R.id.text, contentText);}if (this.when != 0) {contentView.setViewVisibility(R.id.time, View.VISIBLE);contentView.setLong(R.id.time, "setTime", when);}if (this.number != 0) {NumberFormat f = NumberFormat.getIntegerInstance();contentView.setTextViewText(R.id.info, f.format(this.number));}this.contentView = contentView;this.contentIntent = contentIntent;}
从上述代码中我们很明显能够看出来，Notification使用了一个RemoteViews的类来实现自己的布局，最后通过调用 this.contentView = contentView; this.contentIntent = contentIntent;这两个方法来实现界面布局和Intent的，，那么我们可不可以自己写一个remoteView呢，废话。。。
看RemoteViews中的
public void setImageViewBitmap(int viewId, Bitmap bitmap) {setBitmap(viewId, "setImageBitmap", bitmap);}这不就是我们想要的吗。。。。
我们只有一个目的，把图片换成网络中加载的图片，我们先把图片从网络中加载到本地，看代码：
public void set(final Context context, String urlStr, final Bundle bundle) {new AsyncTask<String, Void, Bitmap>() {@Overrideprotected Bitmap doInBackground(String… params) {try {URL url = new URL(params[0]);HttpURLConnection conn = (HttpURLConnection) url.openConnection();conn.setConnectTimeout(6000);// 设置超时conn.setDoInput(true);conn.setUseCaches(false);// 不缓存conn.connect();int code = conn.getResponseCode();Bitmap bitmap = null;if (code == 200) {InputStream is = conn.getInputStream();// 获得图片的数据流bitmap = BitmapFactory.decodeStream(is);}return bitmap;} catch (MalformedURLException e) {e.printStackTrace();return null;} catch (IOException e) {e.printStackTrace();return null;}}@Overrideprotected void onPostExecute(Bitmap result) {super.onPostExecute(result);if (result != null) {openNitifNews(context, result, bundle);}}}.execute(urlStr);}我们从网络中把图片加载到本地形成了bitmap，然后通过setImageViewBitmap把bitmap设置进去就oK了。
再来看看openNitifNews方法：
/** * 处理推送的逻辑 * * @param ct * @param imgUrl * @param bundle */private void openNitifNews(Context ct, Bitmap bitmap, Bundle bundle) {Context context = ct.getApplicationContext();NewsBean bean = null;bean = (NewsBean) bundle.getSerializable("bean");if(bean == null)return;if (TextUtils.isEmpty(bean.getTitle())) {return;}if (TextUtils.isEmpty(bean.getDes())) {bean.setDes(" ");}NotificationManager nm = null;if (null == nm) {nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);}Notification notification = new Notification();// 采用默认声音notification.defaults |= Notification.DEFAULT_SOUND;// 使用默认的灯光notification.defaults |= Notification.DEFAULT_LIGHTS;// 通知被点击后，自动消失notification.flags |= Notification.FLAG_AUTO_CANCEL;notification.icon = R.drawable.ic_launcher;// 点击'Clear'时，无法清除通知// notification.flags |= Notification.FLAG_NO_CLEAR;// 点击清除按钮不会清除消息通知,可以用来表示在正在运行// notification.flags |= Notification.FLAG_ONGOING_EVENT;RemoteViews remoteView = new RemoteViews(context.getPackageName(),R.layout.notif_news); //通过自己的布局来显示remoteView.setImageViewBitmap(R.id.iv_newspush_icon, bitmap);remoteView.setTextViewText(R.id.tv_newpush_title, bean.getTitle());remoteView.setTextViewText(R.id.tv_newpush_des, bean.getDes());Intent appIntent = new Intent(ct, NewsDetailsActivity.class);appIntent.putExtra("article_type", bean.getTypeId());appIntent.putExtra("News_ID", bean.getID());appIntent.putExtra("HEADTITLE", bean.getHeadTitle());PendingIntent contentIntent = PendingIntent.getActivity(ct, 0, appIntent,PendingIntent.FLAG_UPDATE_CURRENT);<span style="white-space:pre"></span><span style="white-space:pre"></span>// remoteView.setOnClickPendingIntent(R.id.ll_newpush_root,<span style="white-space:pre"></span>// contentIntent); //如果在这里设置点击事件，不会消失，根据需求来。。notification.contentView = remoteView; notification.contentIntent = contentIntent;nm.notify(MySmsReceiver.NEWSPUAH, notification);}ok了，接着就是调用吧。。。
一路走来，我们无法猜测将是迎接什么样的风景，
