Android系统分享

本文转自：http://blog.csdn.net/lnb333666/article/details/8824608

 /**
  * 分享工具类
  *
  * @fileName ShareUtil.java
  * @author naibo-liao
  * @CreateTime 2013-4-19 上午11:01:04
  */
 public class ShareUtil {
     private List<ResolveInfo> resInfo;
     private PackageManager pm;
     private Map<String, Boolean> noPicApps;
     private SettingManager mSettingManager;
     private static ShareUtil mShareUtil;

     private ShareUtil() {
         mSettingManager = SettingManager.getInstance(GirlApplication
                 .getInstance());
         pm = GirlApplication.getInstance().getPackageManager();
         getShareNoPicApps();
     }

     public static ShareUtil getInstance() {
         if (mShareUtil == null) {
             mShareUtil = new ShareUtil();
         }
         return mShareUtil;
     }
     /**
      * 获取分享目标
      *
      * @return
      */
     public List<Intent> getTargetedShareIntents(String picUrl) {
         try {

             String path = FileUtils.copyFile(picUrl);

             File file = new File(path);
             Intent intent = new Intent(Intent.ACTION_SEND);
             intent.setType("text/plain");
             if (null == resInfo) {
                 resInfo = pm.queryIntentActivities(intent, 0);
             }
             if (!resInfo.isEmpty()) {
                 List<Intent> targetedShareIntents = new ArrayList<Intent>();
                 for (ResolveInfo info : resInfo) {
                     Intent targeted = new Intent(Intent.ACTION_SEND);

                     /**
                      * 以下的代码大致可以理解为 获取本地有分享动作的应用，如微信、微博等，
                      * 根据包名或应用名来分配不同的内容。
                      */
                     ActivityInfo activityInfo = info.activityInfo;
                     String packageName = activityInfo.packageName;
                     PackageInfo pinfo = pm.getPackageInfo(packageName, 0);
                     String appName = pinfo.applicationInfo.loadLabel(pm)
                             .toString();

                     if (null != noPicApps && noPicApps.size() > 0) {
                         //需要特别处理分享内容的应用，由服务器派发
                         if (noPicApps.containsKey(appName.toUpperCase())) {
                             targeted.setType("text/plain");
                         } else {
                             targeted.setType("image/*");
                             targeted.putExtra(Intent.EXTRA_STREAM,
                                     Uri.fromFile(file));
                         }
                     } else {
                         //需要特别处理分享内容的应用，本地自行判断，代码有点多余了，哈哈
                         if (appName.contains("微信") || appName.contains("UC")) {
                             targeted.setType("text/plain");
                         } else {
                             targeted.setType("image/*");
                             targeted.putExtra(Intent.EXTRA_STREAM,
                                     Uri.fromFile(file));
                         }
                     }

                     //分享的文本信息
                     targeted.putExtra(Intent.EXTRA_TEXT,
                             reconfigurationShareMessage(appName));
                     // targeted.setClassName(getApplication(), className);
                     targeted.setPackage(packageName);
                     targetedShareIntents.add(targeted);
                 }
                 return targetedShareIntents;
             }
         } catch (Exception e) {
         }
         return null;
     }

     /**
      * 获取不需要分享图片的应用
      */
     private void getShareNoPicApps() {
         if (noPicApps == null) {
             noPicApps = new HashMap<String, Boolean>();
             if (!TextUtils.isEmpty(mSettingManager.getShareNoPicApps())) {
                 String[] strNoPicApps = mSettingManager.getShareNoPicApps()
                         .split(",");
                 for (int i = 0; i < strNoPicApps.length; i++) {
                     noPicApps.put(strNoPicApps[i].toUpperCase(), true);
                 }
             }
         }
     }

     /**
      * 构建分享内容
      *
      * @param appName
      * @return
      */
     private String reconfigurationShareMessage(String appName) {
         String message = mSettingManager.getShareMessage();
         String shareUrl = mSettingManager.getShareUrl();
         String encode = "frapp="
                 + URLEncoder.encode(appName)
                 + "&frid="
                 + EncryptUtils.encryptToMD5(NetParameters.IMEI)
                         .substring(8, 24);
         if (!TextUtils.isEmpty(shareUrl)) {
             if (shareUrl.contains("?")) {
                 shareUrl = shareUrl + "&" + encode;
             } else {
                 shareUrl = shareUrl + "?" + encode;
             }
         }
         if (message.contains("{#shareurl#}") && !TextUtils.isEmpty(shareUrl)) {
             return message.replace("{#shareurl#}", shareUrl);
         }
         return message;
     }
 }

 List<Intent> targetedShareIntents = ShareUtil.getInstance()
                     .getTargetedShareIntents(picdetail.getPictureurl());
             // 分享框标题
             Intent chooserIntent = Intent.createChooser(
                     targetedShareIntents.remove(0), "分享给好友");
             if (chooserIntent == null) {
                 return;
             }

             chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS,
                     targetedShareIntents.toArray(new Parcelable[]{}));
             chooserIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
             startActivity(chooserIntent);