java - 无法在 android 应用程序中创建 facebook 登录找不到符号方法 getAccessToken()

Question

我正在为我的 android 应用程序创建一个 facebook 登录。我遇到以下错误，我试图解决这些错误，但我无法解决，因为我找不到解决方案。

1) Error:(46, 46) error: cannot find symbol method getAccessToken()

2) 错误:(41, 55) 错误:不兼容的类型:> 无法转换为 FacebookCallback

我的activity_main.xml是:

 <?xml version="1.0" encoding="utf-8"?>
 <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/activity_main"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="#5b9bd5"
     tools:context="com.example.ratingapp.ratingapp.MainActivity">


     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:id="@+id/info"
         android:layout_alignParentLeft="true"
         android:layout_alignParentTop="true"
         android:textSize="18sp"
         />

     <com.facebook.login.widget.LoginButton
         android:id="@+id/login_button"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_centerInParent="true"
         />


 </android.support.constraint.ConstraintLayout>

我的 MainActivity.java 是:

  package com.example.ratingapp.ratingapp;

  import android.content.Intent;
  import android.support.v7.app.AppCompatActivity;
  import android.os.Bundle;
  import android.util.Log;
  import android.view.View;
  import android.widget.ImageButton;
  import android.widget.TextView;
  import android.widget.Toast;

  import com.facebook.CallbackManager;
  import com.facebook.FacebookCallback;
  import com.facebook.FacebookException;
  import com.facebook.FacebookSdk;
  import com.facebook.accountkit.LoginResult;
  import com.facebook.login.LoginManager;
  import com.facebook.login.widget.LoginButton;

  import java.util.Arrays;
  import java.util.List;

  import static android.R.attr.data;

  public class MainActivity extends AppCompatActivity {


      private TextView info;
      private LoginButton loginButton;
      private CallbackManager callbackManager;

      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          FacebookSdk.sdkInitialize(this.getApplicationContext());
          setContentView(R.layout.activity_main);
          callbackManager = CallbackManager.Factory.create();
          loginButton = (LoginButton) findViewById(R.id.login_button);
          List<String> permissionNeeds = Arrays.asList("user_photos", "email", "user_birthday", "public_profile");
          loginButton.setReadPermissions(permissionNeeds);
          loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
              @Override
              public void onSuccess(LoginResult loginResult) {
                  info.setText(
                          "User ID: "
                                  + loginResult.getAccessToken().getUserId()
                                  + "\n" +
                                  "Auth Token: "
                                  + loginResult.getAccessToken().getToken()
                  );
              }

              @Override
              public void onCancel() {
                  info.setText("Login attempt canceled.");
              }

              @Override
              public void onError(FacebookException exception) {
                  info.setText("Login attempt failed.");
              }
          });

      }
  }

请帮我解决这些错误，我在这段代码中做错了什么。

请同时检查我的 AndroidManifest.xml，以防我放错了 facebook 库。

 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.example.ratingapp.ratingapp">

     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
         <activity android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

                 <category android:name="android.intent.category.LAUNCHER"  
         />
             </intent-filter>
         </activity>
         <activity android:name="com.facebook.FacebookActivity"
             android:configChanges=
             "keyboard|keyboardHidden|screenLayout|screenSize|orientation"
             android:theme="@android:style/Theme.Translucent.NoTitleBar"
             android:label="@string/app_name" />

         <meta-data android:name="com.facebook.sdk.ApplicationId"
             android:value="@string/facebook_app_id"/>

     </application>
    <uses-permission android:name="android.permission.INTERNET"/>
  /manifest>

Answer 1

loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() 
{
	@Override
	public void onSuccess (final LoginResult loginResult)
	{ 
		  GraphRequest request = GraphRequest.newMeRequest(loginResult.getAccessToken(), new GraphRequest.GraphJSONObjectCallback()
		    { 
                            @Override
                            public void onCompleted (JSONObject object, GraphResponse response) 
                            {
                                try
                                {  
                                	String id = response.getJSONObject().getString("id");
		 		((InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE)).hideSoftInputFromWindow(passwordEditText.getWindowToken(), 0);
        	 						
    		 						if (connect()) 
    		 						{   
    		 							  /*ENTER*/   
    		 						}   
    		 						else
    		 						{
    		 							Toast.makeText(getApplicationContext(), textProblemConnecting(), Toast.LENGTH_LONG).show();
    		 						} 
								}
                                catch (JSONException e)
                                {
									e.printStackTrace();
								} 
                            }
		                });
		                Bundle parameters = new Bundle();
		                parameters.putString("YOUR FIELDS");
		                request.setParameters(parameters);
		                request.executeAsync();
		            }
		    	 
		    	    @Override
		    	    public void onCancel ()
		    	    {
		    	    
		    	    }
		    	 
		    	    @Override
		    	    public void onError (FacebookException e) 
		    	    {
		    	    
		    	    }
		    	}); 

Bundle 参数 = new Bundle(); parameters.putString("fields", "first_name, email, id, last_name, birthday, locale"); request.setParameters(参数); 请求.executeAsync();