利用facebook api进行登录，并调用api

1.先在facebook官网上下载 
            facebook-facebook-android-sdk-v1.2.1-0-g5a72863.zip（下载地址 ： https://github.com/facebook/facebook-android-sdk）
2. new --Android Project -----create project from existing source ----选择facebook  ，

3.创建一个新的应用，要引用 facebook项目，方法（右键---properties---Android----Add library  选择facebook项目）

4.在facebook平台上创建应用 ，获得APP_ID。
   验证 登录的代码


   public static final String APP_ID = "374076005970091";
   private Facebook mFacebook= new Facebook(APP_ID);
    private AsyncFacebookRunner mAsyncRunner= new AsyncFacebookRunner(mFacebook);
    private static final String[] PERMISSIONS =
            new String[] {"publish_stream", "read_stream", "offline_access"};

     public void onClick(View v) {
        // TODO Auto-generated method stu 
        mFacebook.authorize(this,
                     PERMISSIONS, new LoginDialogListener());
      
    }

    获得个人信息的代码：

   mAsyncRunner.request("me", new SelfListener());
   class SelfListener implements com.facebook.android.AsyncFacebookRunner.RequestListener{

        @Override
        public void onComplete(String response, Object state) {
            // TODO Auto-generated method stub
            Intent intent = new Intent();
            intent.setClass(FaceBookTestActivity.this, ResultActivity.class);
            //response是个人信息的json字符串
            intent.putExtra("response", response);
            startActivity(intent);
        }

     发表说说的代码：
     mFacebook.dialog(ResultActivity.this, "stream.publish",
                new WallPostDialogListener());
   
    public class WallPostDialogListener implements
            com.facebook.android.Facebook.DialogListener {

        /**
         * Called when the dialog has completed successfully
         */
        public void onComplete(Bundle values) {
            final String postId = values.getString("post_id");
            if (postId != null) {
                Log.d("FB Sample App", "Dialog Success! post_id=" + postId);
                mAsyncRunner.request(postId, new WallPostRequestListener());
            } else {
                Log.d("FB Sample App", "No wall post made");
            }
        }

        @Override
        public void onCancel() {
            // No special processing if dialog has been canceled
        }

        @Override
        public void onError(DialogError e) {
            // No special processing if dialog has been canceled
        }

        @Override
        public void onFacebookError(FacebookError e) {
            // No special processing if dialog has been canceled
        }
    }

    public class WallPostRequestListener implements
            com.facebook.android.AsyncFacebookRunner.RequestListener {

        /**
         * Called when the wall post request has completed
         */

        @Override
        public void onComplete(String response, Object state) {
            // TODO Auto-generated method stub
            Log.d("Facebook-Example", "Got response: " + response);
        }

        @Override
        public void onIOException(IOException e, Object state) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onFileNotFoundException(FileNotFoundException e,
                Object state) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onMalformedURLException(MalformedURLException e,
                Object state) {
            // TODO Auto-generated method stub

        }

        @Override
        public void onFacebookError(FacebookError e, Object state) {
            // TODO Auto-generated method stub

        }

    }