如何从另一个活动注销Facebook？ [英] How to logout in facebook from another activity?

问题描述

我使用的是Facebook SDK 4.4.0。我想从另一个活动注销Facebook？
如何在其他活动中添加注销功能？
我想在成功登录之后进入另一个活动，并在该活动中添加注销功能

  loginButton.registerCallback（callbackManager ，
 new FacebookCallback< LoginResult>（）{
 @Override 
 public void onSuccess（LoginResult loginResult）{
 new fblogin（）。execute（loginResult.getAccessToken（））; 
 
} 
 
 @Override 
 public void onCancel（）{
 
} 
 
 @Override 
 public void onError（FacebookException e）{
 
} 
}）; 
 
} 
 
 @Override 
 protected void onActivityResult（int requestCode，int resultCode，Intent data）{
 super.onActivityResult（requestCode，resultCode，data ）; 
 callbackManager.onActivityResult（requestCode，resultCode，data）; 
} 
 
 class fblogin extends AsyncTask< AccessToken，String，String> {
 
 @Override 
 protected void onPreExecute（）{
 super.onPreExecute（）; 
 pDialog = new ProgressDialog（MainActivity.this）; 
 pDialog.setMessage（Wait .....）; 
 pDialog.setIndeterminate（false）; 
 pDialog.setCancelable（false）; 
 pDialog.show（）; 
} 
 
 protected String doInBackground（AccessToken ... params）{
 GraphRequest request = GraphRequest.newMeRequest（params [0]，
 new GraphRequest.GraphJSONObjectCallback（） $ {
 
 Log.v（MainActivity，response.toString（））; 
 
 try {
 
 username = object.getString（first_name）; 
 emailid = object.getString（email）; 
 gender = object .getString（gender）; 
 
 Log.v（User Name，username）; 
 Log.v（Email，emailid）; 
 Log.v （性别，性别）; 
 
 } catch（JSONException e）{
 // TODO自动生成的catch 
 //块
 e.printStackTrace（）; 
} 
} 
 
}）; 
 Bundle parameters = new Bundle（）; 
 parameters.putString（fields，
id，first_name，email，gender，birthday）; 
 request.setParameters（parameters）; 
 request.executeAndWait（）; 
 
返回null; 
} 
 
 protected void onPostExecute（String file_url）{
 
 pDialog.dismiss（）; 
 
} 
 
} 
  

解决方案

首先在你的活动上初始化 FacebookSdk.sdkInitialize（getApplicationContext（））; ，然后在按钮点击事件上写下面的代码：

LoginManager.getInstance（）。logOut（）;

完成!!!

I am using facebook SDK 4.4.0. i want to logout in facebook from another activity? How can I add logout functionality in another activity ? I want to go to another activity after successful login and add logout functionality in that activity

loginButton.registerCallback(callbackManager,
                new FacebookCallback<LoginResult>() {
                    @Override
                    public void onSuccess(LoginResult loginResult) {
                        new fblogin().execute(loginResult.getAccessToken());

                    }

                    @Override
                    public void onCancel() {

                    }

                    @Override
                    public void onError(FacebookException e) {

                    }
                });

    }

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

    class fblogin extends AsyncTask<AccessToken, String, String> {

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            pDialog = new ProgressDialog(MainActivity.this);
            pDialog.setMessage("Wait.....");
            pDialog.setIndeterminate(false);
            pDialog.setCancelable(false);
            pDialog.show();
        }

        protected String doInBackground(AccessToken... params) {
            GraphRequest request = GraphRequest.newMeRequest(params[0],
                    new GraphRequest.GraphJSONObjectCallback() {
                        @Override
                        public void onCompleted(JSONObject object,
                                GraphResponse response) {

                            Log.v("MainActivity", response.toString());

                            try {

                                username = object.getString("first_name");
                                emailid = object.getString("email");
                                gender = object.getString("gender");

                                Log.v("User Name", username);
                                Log.v("Email", emailid);
                                Log.v("Gender", gender);

                            } catch (JSONException e) {
                                // TODO Auto-generated catch
                                // block
                                e.printStackTrace();
                            }
                        }

                    });
            Bundle parameters = new Bundle();
            parameters.putString("fields",
                    "id,first_name,email,gender,birthday");
            request.setParameters(parameters);
            request.executeAndWait();

            return null;
        }

        protected void onPostExecute(String file_url) {

            pDialog.dismiss();

        }

    }

解决方案

First initialize the FacebookSdk.sdkInitialize(getApplicationContext()); on your activity then write the below code on button click event:

LoginManager.getInstance().logOut();

It is done!!!

这篇关于如何从另一个活动注销Facebook？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！