Android 開發 (四十九) 取得好友名單 facebook v1 before 3.14

在3.14版本(5/1)號以前的facebook app可以取得好友名單，要怎麼取得好友名單呢，方法很簡單

只需要使用Request.newMyFriendsRequest API 就可以取得好友清單，
範例如下

 public void requestFriend(){
  
   Request request = Request.newMyFriendsRequest(Session.getActiveSession(),
              new Request.GraphUserListCallback() {

      @Override
      public void onCompleted(List<GraphUser> users, Response response) {
       if(users!=null){
        String uri = null;
        List<FriendModel> FriendData= new ArrayList<FacebookFriend.FriendModel>();
        Map<String, FriendModel> maps = new HashMap<String, FacebookFriend.FriendModel>();
        for(GraphUser user :users){
         FriendModel model = new FriendModel(user);
         FriendData.add(model); 
         maps.put(model.Id, model);
        }
                     

       }
      }
                  
              });
   Bundle params = new Bundle();
         params.putString("fields", "id,name,picture");
         request.setParameters(params);
         request.executeAsync();
 }

在params中加入的fields代表查詢時會回傳的資料，在取得GraphUser 之後，就是要想辦法取得userId,userPicture了，該怎麼做呢?  看看範例

 public static class FriendModel{
  private String name;
  private String Id;
  private String picture;
  public FriendModel(GraphUser user){
   name = user.getName();
   Id = user.getId();
   picture  = getPicture(user);
  }
  public FriendModel(String _name,String _Id,String _picture){
   name = _name;
   Id = _Id;
   picture  = _picture;     
  }
  
  public String getName(){
   return name;
  }
  
  public String getId(){
   return Id;
  }
  
  public String getPicture(){
   return picture;
  }
  
  private String getPicture(GraphUser user){
   String uri="";
   Object o = user.getProperty("picture");
         if (o instanceof String) {
             uri = (String) o;
         } else if (o instanceof JSONObject) {
             ItemPicture itemPicture = GraphObject.Factory.create((JSONObject) o).cast(ItemPicture.class);
             ItemPictureData data = itemPicture.getData();
             if (data != null) {
                 uri = data.getUrl();
             }
         }
         uri = uri.replace("s50x50", "s100x100");
         return uri;
  }
 }
 private interface ItemPicture extends GraphObject {
        ItemPictureData getData();
    }

    // Graph object type to navigate the JSON that sometimes comes back instead of a URL string
    private interface ItemPictureData extends GraphObject {
        String getUrl();
    }

要圖案的話就必須利用上面的方式取得user的圖案，但是這邊有個Tricky的點，就是我將取得的圖檔轉成了100x100 不過這種方法在某些情況下可能會取不到user的圖。 在取得好友圖像以及ID之後就可以做更多的事情啦，例如tag好友，POST朋友塗鴉牆，invite好友....etc