android facebook post to wall

Request request = new Request(Session.getActiveSession(), "me/feed", postParams,                               HttpMethod.POST, new Request.Callback(){...});
RequestAsyncTask task = new RequestAsyncTask(request); 

task.execute();

這裡的postParams 是 Bundle postParams = new Bundle();
而po出的文會成為什麼樣子則要看我們利用postParam填入什麼屬性。
postParams.putString("name", "Facebook SDK for Android");

link	The link attached to this post (點選name或圖片會跳過去link)
picture	The URL of a picture attached to this post. The picture must be at least 50px by 50px (though minimum 200px by 200px is preferred) and have a maximum aspect ratio of 3:1 (圖片上的那塊藍綠圖)
source	The URL of a media file (either SWF or MP3) attached to this post. If both source and picture are specified, only source is used.
name	The name of the link attachment.(圖片上的Facebook Dialog)
caption	The caption of the link (appears beneath the link name). If not specified, this field is automatically populated with the URL of the link.(圖片上的Reference Documentation)
description	The description of the link (appears beneath the link caption). If not specified, this field is automatically populated by information scraped from the link, typically the title of the page. (圖片上的Using Dialogs to interact with users)
properties	A JSON object of key/value pairs which will appear in the stream attachment beneath the description, with each property on its own line. Keys must be strings, and values can be either strings or JSON objects with the keys text and href. (會接在圖片上description後面)
actions	A JSON array containing a single object describing the action link which will appear next to the "Comment" and "Like" link under posts. The contained object must have the keys name and link. "{'name'='text', 'link'='URL'}" (會在圖片上like, comment的右邊然後文字為text，連結為URL)

http://developers.facebook.com/docs/reference/dialogs/feed/
https://developers.facebook.com/docs/reference/dialogs/

Facebook LoginButton Permissions

在新增LoginButton時，可設定可被公開的權限，那一總共有哪些

final List<String> PERMISSIONS_PUBLISH = Arrays.asList("publish_actions", "publish_checkins");
LoginButton authButton=(LoginButton)findViewById(R.id.authButton);authButton.setPublishPermissions(PERMISSIONS_PUBLISH);

Permission	Description
read_friendlists	讓你可取得使用者的好友名單
read_insights	讓你可取得使用者允許的可視資料, 應用程式, 網域(domains the user owns)
read_mailbox	讓你可取得使用者的收件匣資訊
read_requests	讓你可取得使用者的好友所發出的請求
read_stream	讓你可取得使用者塗鴉牆上的News feed, 甚至具備搜尋的能力
xmpp_login	Provides applications that integrate with Facebook Chat the ability to log in users.
ads_management	Provides the ability to manage ads and call the Facebook Ads API on behalf of a user.
create_event	Enables your application to create and modify events on the user's behalf
manage_friendlists	讓你的程式可以建立與編輯使用者朋友群組
manage_notifications	Enables your app to read notifications and mark them as read. Intended usage: This permission should be used to let users read and act on their notifications; it should not be used to for the purposes of modeling user behavior or data mining. Apps that misuse this permission may be banned from requesting it.
user_online_presence	Provides access to the user's online/offline presence
friends_online_presence	Provides access to the user's friend's online/offline presence
publish_checkins	讓你的程式可以打卡
publish_actions	Enables your app to post content, comments, and likes to a user's stream and to the streams of the user's friends. This requires extra permissions from a person using your app. However, please note that Facebook recommends a user-initiated sharing model. Please read the Platform Policies to ensure you understand how to properly use this permission. Note, you do not need to request the publish_stream permission in order to use the Feed Dialog, the Requests Dialog or the Send Dialog.
rsvp_event	Enables your application to RSVP to events on the user's behalf

https://developers.facebook.com/docs/reference/login/extended-permissions/