Android实现微信分享带有缩略图的网页

/** 
 * 微信分享 好友 
 */ 
 public void wxHyShare(String shareUrl, String title, String image, String desc) { 
   IWXAPI api = WXAPIFactory.createWXAPI(context, Constant.Wx_APP_ID); 
 
   WXWebpageObject webPage = new WXWebpageObject(); 
   webPage.webpageUrl = shareUrl; 
   WXMediaMessage msg = new WXMediaMessage(webPage); 
   //msg.title = context.getString(R.string.app_name); 
   msg.title = title; 
   msg.description = desc; 
   //图片加载是使用的ImageLoader.loadImageSync() 同步方法 
   //并且还要创建图片的缩略图，因为微信限制了图片的大小 
   Bitmap thumbBmp = Bitmap.createScaledBitmap(ImageLoaderUtil.getBitmap(image), 200, 200, true); 
   msg.setThumbImage(thumbBmp); 
   thumbBmp.recycle(); 
   SendMessageToWX.Req req = new SendMessageToWX.Req(); 
   req.transaction = String.valueOf(System.currentTimeMillis()); // transaction字段用于唯一标识一个请求 
   req.message = msg; 
   //好友 
   req.scene = SendMessageToWX.Req.WXSceneSession; 
   // 调用api接口发送数据到微信 
   boolean result = api.sendReq(req); 
   LogUtil.d(TAG, result + ""); 
 } 

/** 
 * 获取bitmap 
 * @param imageUrl 
 * @return 
 */ 
public static Bitmap getBitmap(String imageUrl) { 
  DisplayImageOptions options = new DisplayImageOptions.Builder() 
      .cacheInMemory(true) 
      .cacheOnDisk(true) 
      .build(); 
  return ImageLoader.getInstance().loadImageSync(imageUrl, options); 
} 

if(this.getType() == 8 && (this.thumbData == null || this.thumbData.length == 0)) { 
  Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, thumbData should not be null when send emoji"); 
  return false; 
} else if(this.thumbData != null && this.thumbData.length > '耀') { 
  Log.e("MicroMsg.SDK.WXMediaMessage", "checkArgs fail, thumbData is invalid"); 
  return false; 

Bitmap thumbBmp = Bitmap.createScaledBitmap(ImageLoaderUtil.getBitmap(image), 200, 200, true);