android系统分享的自定义功能的示例代码

    Intent share = new Intent(Intent.ACTION_SEND);
    share.setType("text/plain");
    share.putExtra(Intent.EXTRA_TEXT, shareText);
    share.putExtra(Intent.EXTRA_SUBJECT, shareSubject);

    if (uri != null) {
      share.setType("image/*");
      share.putExtra(Intent.EXTRA_STREAM, uri);
    }
    context.startActivity(Intent.createChooser(share, title));

    private static List<List<ResolveInfo>> getShareActivities() {
    Intent sharingIntent = new Intent(android.content.Intent.ACTION_SEND);
    sharingIntent.setType("text/plain");
    PackageManager pm = App.getInstance().getPackageManager();
    List<List<ResolveInfo>> listArrayList = new ArrayList<>();
    List<ResolveInfo> activityList = pm.queryIntentActivities(sharingIntent, 0);
    List<ResolveInfo> newActivityList = new ArrayList<>();

    for (Iterator<ResolveInfo> it = activityList.iterator(); it.hasNext(); ) {
      ResolveInfo info = it.next();
      //过滤出facebook google+ whatapp twitter 分享app单独处理
      LogUtils.e("+++", info.activityInfo.packageName);
      if (info.activityInfo.packageName.equals("com.android.bluetooth") || info.activityInfo.packageName.equals("com.android.nfc") || info.activityInfo.packageName.equals("com.facebook.katana") || info.activityInfo.packageName.equals("com.google.android.apps.plus") || info.activityInfo.packageName.equals("com.facebook.orca") || info.activityInfo.packageName.contains("whatsapp") || info.activityInfo.packageName.equals("com.twitter.android")) {
        if (info.activityInfo.packageName.equals("com.android.bluetooth") || info.activityInfo.packageName.equals("com.android.nfc")) {
          it.remove();
        } else {
          newActivityList.add(info);
          it.remove();
        }
      }
    }
    //增加一条other数据
    newActivityList.add(null);
    listArrayList.add(newActivityList);
    listArrayList.add(activityList);
    return listArrayList;
  }

public static void systemShareDialog(List<ResolveInfo> packages, Context context, String title, String shareText) {
    List<Intent> targetIntents = new ArrayList<Intent>();
    Intent shareIntent = new Intent(Intent.ACTION_SEND);
    shareIntent.setType("text/plain");
    SPM spm = new SPM();

    for (ResolveInfo candidate : packages) {
      String packageName = candidate.activityInfo.packageName;
      Intent target = new Intent(android.content.Intent.ACTION_SEND);
      target.setType("text/plain");
      target.putExtra(Intent.EXTRA_TEXT, shareText);
      //target.setPackage(packageName);
      //t will be able to handle the case of multiple activities within the same app that can handle this intent. Otherwise, a weird item of "Android System" will be shown
      target.setComponent(new ComponentName(packageName, candidate.activityInfo.name));

      targetIntents.add(target);
    }
//    createchooser时使用targetIntents.remove(0)即传入targetIntents的第一个intent，并将其移除，
//
//    否则执行chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetIntents.toArray(new Parcelable[] {}));添加后启动时会出现两个相同的应用
    Intent chooserIntent = Intent.createChooser(targetIntents.remove(0), title);
    chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, targetIntents.toArray(new Parcelable[]{}));
    context.startActivity(chooserIntent);

  }