如何从我的应用程序连接到 Facebook

Question

我正在开发 android 应用程序，我希望用户在第一次使用 Facebook SDK 打开应用程序时连接 Facebook。 然后我想从我的应用程序中发布特定消息到 Facebook 墙上。我尝试将 Facebook sdk 与我的应用程序一起使用。我已经在 mp 应用程序和 Facebook sdk 之间进行了集成，但我不知道如何执行登录 Facebook 并使用特定消息发布到墙上的任务。我在 stackoverflow 中搜索这项任务，我找到了这段代码，但我无法理解 它不适合我

public class MainActivity extends Activity {

    Facebook facebookClient;    
    SharedPreferences mPrefs;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        facebookClient=new Facebook("fb_App_id");
          ImageButton facebookButton = (ImageButton) findViewById(R.id.button_FacebookShare);
            facebookButton.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {

                    loginToFacebook();

                    if (facebookClient.isSessionValid()) {
                        postToWall();
                    }
                }
            });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        facebookClient.authorizeCallback(requestCode, resultCode, data);
    }

    public void loginToFacebook() {
        mPrefs = getPreferences(MODE_PRIVATE);
        String access_token = mPrefs.getString("access_token", null);
        long expires = mPrefs.getLong("access_expires", 0);

        if (access_token != null) {
            facebookClient.setAccessToken(access_token);
        }

        if (expires != 0) {
            facebookClient.setAccessExpires(expires);
        }

        if (!facebookClient.isSessionValid()) {
            facebookClient.authorize(this, new String[] { "publish_stream" }, new DialogListener() {

                @Override
                public void onCancel() {
                    // Function to handle cancel event
                }

                @Override
                public void onComplete(Bundle values) {
                    // Function to handle complete event
                    // Edit Preferences and update facebook acess_token
                    SharedPreferences.Editor editor = mPrefs.edit();
                    editor.putString("access_token", facebookClient.getAccessToken());
                    editor.putLong("access_expires", facebookClient.getAccessExpires());
                    editor.commit();

                    postToWall();
                }

                @Override
                public void onError(DialogError error) {
                    // Function to handle error

                }

                @Override
                public void onFacebookError(FacebookError fberror) {
                    // Function to handle Facebook errors

                }

            });
        }
    }

    private void postToWall() {
        Bundle parameters = new Bundle();
        parameters.putString("name", "Battery Monitor");
        parameters.putString("link", "https://play.google.com/store/apps/details?id=com.ck.batterymonitor");
        parameters.putString("picture", "link to the picture");
        parameters.putString("display", "page");
        // parameters.putString("app_id", "228476323938322");

        facebookClient.dialog(MainActivity.this, "feed", parameters, new DialogListener() {

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

            }

            @Override
            public void onError(DialogError e) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onComplete(Bundle values) {
                // TODO Auto-generated method stub
            }

            @Override
            public void onCancel() {
                // TODO Auto-generated method stub
            }
        });
    }
}

Answer 1

您应该参考以下关于 SO 的问题。
Facebook login and post
此代码有效。一定能解决你的问题。

Answer 2

尝试使用 Android Simple Facebook (https://github.com/sromku/android-simple-facebook) - 这是一个让 Facebook SDK 的使用更容易的层。根据文档，登录过程是这样的：

初始化回调监听器：

OnLoginListener onLoginListener = new OnLoginListener() {
    @Override
    public void onLogin() {
        // change the state of the button or do whatever you want
        Log.i(TAG, "Logged in");
    }

    @Override
    public void onNotAcceptingPermissions(Permission.Type type) {
        // user didn't accept READ or WRITE permission
        Log.w(TAG, String.format("You didn't accept %s permissions", type.name()));
    }

    /* 
     * You can override other methods here: 
     * onThinking(), onFail(String reason), onException(Throwable throwable)
     */ 
};

登录：

mSimpleFacebook.login(onLoginListener);