[Android] share with Facebook SDK 3.5

前言

原本在開發者沙盒(SandBox)模式下一切都還滿順利的,

不料上到Google Play發現原本的功能不work, 

花了一些時間才發現小細節.

自己記錄一下, 同時也給需要的人參考一下.

以下我就自己的開發歷程, 

先從沙盒模式說起, 

最後再談關閉沙盒模式要注意的地方.

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下載&Import FaceBook SDK

可以參考官方文件的原文教學

我是用SDK 3.5.2 (Official Download Link / Github SDK3.6)

I'll skip the installation of Facebook in emulator here.

> Right click / 'File' on top

> Existing Android Code Into Workspace

> make sure the 'facebook' project is checked

如果Project有Error可以先檢查android-support-v4.jar的版本是否一致

最快的方法就是把最新的jar在project list裡面copy起來,

然後把其他project有用到的都先delete掉, 再paste上去.

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環境設定

接下來看看我們的project要做哪些設定

1. library

2. Manifest設定

3. res/values/strings.xml加上

(your Facebook App ID)

Facebook上建立應用程式後, copy App ID

4. 在Facebook App設定頁面加上Hash Key

Mac User

keytool -exportcert -alias androiddebugkey -keystore ~/.android/debug.keystore | openssl sha1 -binary | openssl base64

---

程式 - Facebook分享

// facebook
private static final String PERMISSION = "publish_actions";
private UiLifecycleHelper uiHelper;
private boolean canPresentShareDialog;
private PendingAction pendingAction = PendingAction.NONE;
private enum PendingAction {
     NONE,
    POST_PHOTO,
    POST_STATUS_UPDATE
}

// Facebook Login
Session.openActiveSession(this, true, new Session.StatusCallback()
{
     // callback when session changes state
     @Override
     public void call(final Session session, SessionState state, Exception exception)
     {
          if (session.isOpened())
          {   
               // make request to the /me API
               Request request = Request.newMeRequest(session, new Request.GraphUserCallback()
               {
                    @Override
                    public void onCompleted(GraphUser user, Response response)
                    {
                         // If the response is successful
                        Log.d("facebook", "GraphUserCallback" + user.getId()+" " + response.toString());
                                        
                        if (session == Session.getActiveSession())
                        {
                              if (user != null)
                             {
                                   performPublish(PendingAction.POST_STATUS_UPDATE, canPresentShareDialog);
                             }
                        }
                                        
                        if (response.getError() != null)
                        {
                              // Handle errors, will do so later.
                        }
                     }
               });
               request.executeAsync();
          }
     }
});

private void performPublish(PendingAction action, boolean allowNoSession) {
     Session session = Session.getActiveSession();
    if (session != null) {
        pendingAction = action;
        if (hasPublishPermission()) {
               // We can do the action right away.
            handlePendingAction();
            return;
        } else if (session.isOpened()) {
            // We need to get new permissions, then complete the action when we get called back.
            session.requestNewPublishPermissions(new Session.NewPermissionsRequest(this, PERMISSION));
            return;
          }
    }

    if (allowNoSession) {
          pendingAction = action;
        handlePendingAction();
     }
}
    
@SuppressWarnings("incomplete-switch")
private void handlePendingAction() {
    PendingAction previouslyPendingAction = pendingAction;
    // These actions may re-set pendingAction if they are still pending, but we assume they
    // will succeed.
    pendingAction = PendingAction.NONE;

    switch (previouslyPendingAction) {
          case POST_PHOTO:
               //postPhoto();
            break;
        case POST_STATUS_UPDATE:
            postStatusUpdate();
            break;
    }
}
    
private FacebookDialog.ShareDialogBuilder createShareDialogBuilder() {
    return new FacebookDialog.ShareDialogBuilder(this)
          .setName("fb app name")
        .setDescription("app description")
        .setLink("site link");
}
    
private void postStatusUpdate() {
     if (canPresentShareDialog) {
        FacebookDialog shareDialog = createShareDialogBuilder().build();
        uiHelper.trackPendingDialogCall(shareDialog.present());
    } else if (hasPublishPermission()) {
        Bundle params = new Bundle();
        params.putString("name", " link主標題 ");
        params.putString("caption", " link副標題 ");
        params.putString("message", " 描述 ");
        params.putString("link", " 分享連結 ");
        params.putString("picture", " 圖片url ");

        Request request = new Request(Session.getActiveSession(), "me/feed", params, HttpMethod.POST);
        request.setCallback(new Request.Callback() {
               @Override
             public void onCompleted(Response response) {
                    showPublishResult(null, response.getGraphObject(), response.getError());
             }
        });
        request.executeAsync();
     } else {
          pendingAction = PendingAction.POST_STATUS_UPDATE;
    }
}
    
private void showPublishResult(String message, GraphObject result, FacebookRequestError error) {
     String title = null;
    String alertMessage = null;
    if (error == null) {
          title = getString(R.string.success);
        alertMessage = getString(R.string.successfully_posted_post);
    } else {
        title = getString(R.string.error);
        alertMessage = error.getErrorMessage();
    }

    new AlertDialog.Builder(this)
          .setTitle(title)
        .setMessage(alertMessage)
        .setPositiveButton(R.string.ok, null)
        .show();
}

@Override
protected void onActivityResult(int requestCode, int responseCode, Intent intent) {  
    // fb 登入結果
    Session.getActiveSession().onActivityResult(this, requestCode, responseCode, intent);
}

---

正式版本

1. Facebook APP設定頁面一定要把SandBox mode關閉

2. 確認Android app package name

> Export Signed Application Package

> KeyStore path別忘記副檔名.keystore !

> 輸入key的資訊 (一個keystore可以有很多把keys), Alias就是key的名稱

3. 複製正式版本的hashed key (建議在keystore的目錄下)

keytool -exportcert -alias (key的名稱) -keystore (keystore名稱).keystore | openssl sha1 -binary | openssl base64

這樣submit的正式版app就能夠正常分享資訊到Facebook啦!

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