如何在Android中使用Facebook API登出

Question

我正在使用Facebook开发人员指南为Android使用Facebook API。我能够为Android的Facebook
API实现登录。我想实现注销功能。我尝试按照开发人员指南进行操作，但是不知道我必须在哪个位置实施。如果您能帮助我，下面将提供代码，我将不胜感激。

public class FacebookandroidsdkActivity extends Activity {
    /** Called when the activity is first created. */

    Facebook facebook = new Facebook("252039928190210");
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        facebook.authorize(this, new DialogListener() {
            @Override
            public void onComplete(Bundle values) {}

            @Override
            public void onFacebookError(FacebookError error) {}

            @Override
            public void onError(DialogError e) {}

            @Override
            public void onCancel() {}
        });
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        facebook.authorizeCallback(requestCode, resultCode, data);
    }

}

Answer 1

facebook.logout(mainActivityContex);

要么

facebook.logout(this);

在Facebook SDK Facebook.java中-

public String logout(Context context)
        throws MalformedURLException, IOException {
    Util.clearCookies(context);
    Bundle b = new Bundle();
    b.putString("method", "auth.expireSession");
    String response = request(b);
    setAccessToken(null);
    setAccessExpires(0);
    return response;
}`