facebook会话总是给我关闭登录失败

Question

我已经下载了最新的Facebook SDK，我试图获取用户信息session.isOpened()始终为假，有人可以帮忙吗？

这是我的代码：

public class MainActivity extends Activity {

    Button login;
    TextView name;
    TextView email;
    ImageView profile;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // // Add code to print out the key hash
        // try {
        // PackageInfo info = getPackageManager().getPackageInfo(
        // "com.actelme.testfacebook", PackageManager.GET_SIGNATURES);
        // for (Signature signature : info.signatures) {
        // MessageDigest md = MessageDigest.getInstance("SHA");
        // md.update(signature.toByteArray());
        // Log.d("KeyHash:",
        // Base64.encodeToString(md.digest(), Base64.DEFAULT));
        // }
        // } catch (NameNotFoundException e) {
        //
        // } catch (NoSuchAlgorithmException e) {
        //
        // }

        login = (Button) findViewById(R.id.login);
        name = (TextView) findViewById(R.id.name);
        email = (TextView) findViewById(R.id.email);
        profile = (ImageView) findViewById(R.id.picture);

        login.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // start Facebook Login
                Session.openActiveSession(MainActivity.this, true,
                        new Session.StatusCallback() {

                            // callback when session changes state
                            @Override
                            public void call(Session session,
                                    SessionState state, Exception exception) {
                                if (session.isOpened()) {

                                    // make request to the /me API
                                    Request.newMeRequest(session,
                                            new Request.GraphUserCallback() {

                                                // callback after Graph API
                                                // response with user object
                                                @Override
                                                public void onCompleted(
                                                        GraphUser user,
                                                        Response response) {
                                                    if (user != null) {

                                                        name.setText(name
                                                                .getText()
                                                                + " "
                                                                + user.getName()
                                                                + "!");

                                                        email.setText(email
                                                                .getText()
                                                                + " "
                                                                + user.asMap()
                                                                        .get("email")
                                                                        .toString());

                                                        profile.setImageBitmap(getUserPic(user
                                                                .getId()));

                                                    }
                                                }
                                            }).executeAsync();

                                }
                            }
                        });
            }
        });
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Session.getActiveSession().onActivityResult(this, requestCode,
                resultCode, data);
    }

    public Bitmap getUserPic(String userID) {

        String imageURL;
        Bitmap bitmap = null;
        imageURL = "http://graph.facebook.com/" + userID
                + "/picture?type=small";
        try {
            bitmap = BitmapFactory.decodeStream((InputStream) new URL(imageURL)
                    .getContent());
        } catch (Exception e) {
            Log.d("TAG", "Loading Picture FAILED");
            e.printStackTrace();
        }
        return bitmap;
    }

编辑我已经应用了您的代码，但仍无法正常工作

public class MainActivity extends Activity {

Session session;
TextView name;
TextView email;
ImageView profile;
StatusCallback statusCallback = (new StatusCallback() {

    @SuppressWarnings("deprecation")
    @Override
    public void call(final Session session, SessionState state,
            Exception exception) {
        if (session.isOpened()) {
            Request.executeMeRequestAsync(session, new GraphUserCallback() {

                @Override
                public void onCompleted(GraphUser user, Response response) {
                    if (user != null) {

                        name.setText(name.getText() + " " + user.getName()
                                + "!");

                        email.setText(email.getText() + " "
                                + user.asMap().get("email").toString());

                        profile.setImageBitmap(getUserPic(user.getId()));
                    }
                }
            });
        }
    }
});

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    session = Session.getActiveSession();
    if (session == null) {
        if (savedInstanceState != null) {
            Log.d("TAG", "Restoring session");
            session = Session.restoreSession(getApplicationContext(), null,
                    statusCallback, savedInstanceState);
        }
        if (session == null) {
            Log.d("TAG", "Creating new session");
            session = new Session(getApplicationContext());
        }
        Log.d("TAG", "Active session");
        Session.setActiveSession(session);
    } else {
        Log.d("TAG", "Session is null --> " + session.getState().toString());
    }

    name = (TextView) findViewById(R.id.name);
    email = (TextView) findViewById(R.id.email);
    profile = (ImageView) findViewById(R.id.picture);

    LoginButton authButton = (LoginButton) findViewById(R.id.login_button);
    authButton.setOnErrorListener(new OnErrorListener() {

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

    authButton.setReadPermissions(Arrays.asList("basic_info", "email"));
    authButton.setSessionStatusCallback(statusCallback);
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {

    super.onActivityResult(requestCode, resultCode, data);
    Session.getActiveSession().onActivityResult(this, requestCode,
            resultCode, data);
}

public Bitmap getUserPic(String userID) {

    String imageURL;
    Bitmap bitmap = null;
    imageURL = "http://graph.facebook.com/" + userID
            + "/picture?type=small";
    try {
        bitmap = BitmapFactory.decodeStream((InputStream) new URL(imageURL)
                .getContent());
    } catch (Exception e) {
        Log.d("TAG", "Loading Picture FAILED");
        e.printStackTrace();
    }
    return bitmap;
}

}

EDIT2

我使用此代码作为教程生成了密钥哈希，然后将其添加到我的应用设置

// Add code to print out the key hash
    try {
        PackageInfo info = getPackageManager().getPackageInfo(
                "com.facebook.samples.hellofacebook", 
                PackageManager.GET_SIGNATURES);
        for (Signature signature : info.signatures) {
            MessageDigest md = MessageDigest.getInstance("SHA");
            md.update(signature.toByteArray());
            Log.d("KeyHash:", Base64.encodeToString(md.digest(), Base64.DEFAULT));
            }
    } catch (NameNotFoundException e) {

    } catch (NoSuchAlgorithmException e) {

    }

Answer 1

使用本机登录facebok。

按钮xml

    <com.facebook.widget.LoginButton
        android:id="@+id/login_button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="14dp" />

登录活动代码：

    LoginButton authButton = (LoginButton) findViewById(R.id.login_button);
    authButton.setOnErrorListener(new OnErrorListener() {

        @Override
        public void onError(FacebookException error) {
            DebugLog.log("Error: " + error.getMessage() + " Cause: " + error.getCause());               
        }
    });

    authButton.setReadPermissions(Arrays.asList("basic_info", "email"));
    authButton.setSessionStatusCallback(new StatusCallback() {

        @SuppressWarnings("deprecation")
        @Override
        public void call(final Session session, SessionState state, Exception exception) {
            if (session.isOpened()) {
                Request.executeMeRequestAsync(session, new GraphUserCallback() {

                    @Override
                    public void onCompleted(GraphUser user, Response response) {
                        if (user != null) {

                           // Your code
                        }
                    }
                });
            }
        }
    });

控制会话的代码：

    session = Session.getActiveSession();
    if (session == null) {
        if (savedInstanceState != null) {
            DebugLog.log("Restoring session");
            session = Session.restoreSession(getApplicationContext(), null, statusCallback, savedInstanceState);
        }
        if (session == null) {
            DebugLog.log("Creating new session");
            session = new Session(getApplicationContext());
        }
        DebugLog.log("Active session");
        Session.setActiveSession(session);
    } else {
        DebugLog.log("Session is null --> " + session.getState().toString()); 
    }

希望能帮到你