Question

我用facebook登录按钮创建了一个应用程序。我想要那个，当我成功登录到facebook去另一个意图...我写了一些代码，但我有一些'怪异'的错误（我的意见）

到目前为止，这是我的代码：

public class LogIn extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        FacebookSdk.sdkInitialize(getApplicationContext());
        callbackManager = CallbackManager.Factory.create();
        setContentView(R.layout.activity_log_in);

        AppEventsLogger.activateApp(this);
        View view = inflater.inflate(R.layout.splash, container, false); 

        LoginButton loginButton = (LoginButton) view.findViewById(R.id.login_button);
        loginButton.setReadPermissions("email");

        loginButton.registerCallback(callbackmanager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                Intent i = new Intent(this, MainPannel.class);
                startActivity(i);
            }

            public void onCancel() {
            }

            public void onError(FacebookException exception) {
               }
        });
    }

    public Action getIndexApiAction() {
        Thing object = new Thing.Builder()
                .setName("LogIn Page")
                .setUrl(Uri.parse("http://[ENTER-YOUR-URL-HERE]"))
                .build();
        return new Action.Builder(Action.TYPE_VIEW)
                .setObject(object)
                .setActionStatus(Action.STATUS_TYPE_COMPLETED)
                .build();
    }

    public void onStart() {
        super.onStart();
    }

    public void onStop() {
        super.onStop();
    }
}

这些是错误：

Error:(33, 9) error: cannot find symbol variable loginButton
Error:(33, 37) error: cannot find symbol variable view
Error:(37, 38) error: cannot find symbol variable callbackmanager
Error:(41, 28) error: no suitable constructor found for Intent

请帮助:(

Answer 1

首先用应用程序实现facebook。

    loginButton = (LoginButton) view.findViewById(R.id.login_button);
        loginButton.setReadPermissions("email");
        // If using in a fragment
        loginButton.setFragment(this);    
        // Other app specific specialization

        // Callback registration
        loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                // App code
        Intent i = new Intent(this,Another.class);
        startActivity(i);
            }

            @Override
            public void onCancel() {
                // App code
            }

            @Override
            public void onError(FacebookException exception) {
                // App code
            }
        });

https://developers.facebook.com/docs/facebook-login/android

Answer 2

使用com.facebook.login.widget.LoginButton for facebook登录按钮小部件。

并在java文件中导入它们。

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

登录facebook成功后转到另一个意图

2 个答案: