Question

是否有方法检查用户点击退出按钮的时间，我有这个登录我的Android应用程序：

    FacebookSdk.sdkInitialize(this.getApplicationContext());
     callbackManager = CallbackManager.Factory.create();
     SharedPreferences sharedPreferences =  PreferenceManager.getDefaultSharedPreferences(this);
final SharedPreferences.Editor editor = sharedPreferences.edit();

LoginManager.getInstance().registerCallback(callbackManager,

 new FacebookCallback<LoginResult>() {
     @Override public void onSuccess(LoginResult loginResult) {

 // App code
  Toast.makeText(getApplicationContext(), "Login successful" + loginResult.getAccessToken().toString(), Toast.LENGTH_LONG).show();
  GraphRequest request = GraphRequest.newMeRequest(
   loginResult.getAccessToken(),
     new GraphRequest.GraphJSONObjectCallback() {
            @Override
             public void onCompleted(
              JSONObject object,
              GraphResponse response) {
               // Application code
       //textView.setText(response.toString());
   JSONObject j_user = response.getJSONObject();
 try {
             KEY_ID = object.getString("id");
              KEY_EMAIL = object.getString("email");
             KEY_NAME = object.getString("name");

           } catch (JSONException e) {
               e.printStackTrace();
               }
     Log.i("stringazzo", response.toString());
     Log.i("STRING", object.toString());
    //  Log.i("string", KEY_EMAIL);
     //  Log.i("string", KEY_ID);
     //  Log.i("string", KEY_NAME);
    //   Log.i("SHAREDPREFS",KEY_NAME);
   // Log.i("SHAREDPREFS",KEY_EMAIL);
    editor.putString("name", KEY_NAME);
    editor.putString("email", KEY_EMAIL);
    editor.putString("id", KEY_ID);
     editor.commit();
                                          System.out.println(editor.commit());
  }
});
Bundle parameters = new Bundle();
parameters.putString("fields", "id,name,email");
request.setParameters(parameters);
 request.executeAsync();

                        }

                        @Override
                        public void onCancel() {
                            Toast.makeText(getApplicationContext(), "Login canceled", Toast.LENGTH_SHORT).show();
                        }

                        @Override
                        public void onError(FacebookException exception) {
                            Toast.makeText(getApplicationContext(), "Login error"+exception.getMessage().toString(), Toast.LENGTH_SHORT).show();
                        }
                    });

当用户登录我的应用程序时，我从Facebook获取一些数据并将其保存在SharedPreferences中，当用户登录时，登录按钮变为注销，我希望当用户点击注销按钮时，我的所有SharedPreferences都将设置为“0 “价值观。

也在我的iphone应用程序中

我该怎么做？

Answer 1

facebook登录和注销按钮是相同的，并在点击时触发相同的事件。因此，您需要做的是，验证用户是否已登录。

像这样：

Profile.fetchProfileForCurrentAccessToken(); //manually force profile fetching from current token
    if(Profile.getCurrentProfile() != null) { //if it available
        Log.d("TAG", "LOGGED ");
    } else {
        Log.d("TAG", "Profile is null UNLOGGED");
    }

我希望它有所帮助。 ;）

Onfacebook注销事件

1 个答案: