使用REST API登录android中的facebook

implementation 'com.facebook.android:facebook-login:latest.release'

<uses-permission android:name="android.permission.INTERNET"/><activity android:name="com.facebook.FacebookActivity"
    android:configChanges=
        "keyboard|keyboardHidden|screenLayout|screenSize|orientation"
    android:label="@string/app_name" /><activity
    android:name="com.facebook.CustomTabActivity"
    android:exported="true">
   <intent-filter>
       <action android:name="android.intent.action.VIEW" />
       <category android:name="android.intent.category.DEFAULT" />
       <category android:name="android.intent.category.BROWSABLE" />
        <data android:scheme="@string/fb_login_protocol_scheme" />
    </intent-filter>
</activity>

public class FacebookLoginActivity extends AppCompatActivity {

    private static final String TAG = "FacebookLogin";

    private CallbackManager mCallbackManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        FacebookSdk.sdkInitialize(getApplicationContext());
        mCallbackManager = CallbackManager.Factory.create();
        setContentView(R.layout.activity_facebook_login);
        LoginButton loginButton = findViewById(R.id.login_button);
        loginButton.setReadPermissions("email", "public_profile");
        loginButton.registerCallback(mCallbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                Log.d(TAG, "onSuccess: " + loginResult);
                GraphRequest request = GraphRequest.newMeRequest(
                        loginResult.getAccessToken(),
                        new GraphRequest.GraphJSONObjectCallback() {
                            @Override
                            public void onCompleted(JSONObject object, GraphResponse response) {
                                Log.d(TAG, "onCompleted: " + object.toString());
                            }
                        });
                Bundle parameters = new Bundle();
                parameters.putString("fields", "id, name, email, picture.type(large)");
                request.setParameters(parameters);
                request.executeAsync();
            }

            @Override
            public void onCancel() {
                Log.d(TAG, "onCancel");
            }

            @Override
            public void onError(FacebookException error) {
                Log.d(TAG, "onError: " + error.getMessage());
            }
        });
    }

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