Question

我想要以下行动： -

用户按下登录按钮
facebook应用程序请求用户许可
用户同意后，我的应用程序从帐户中检索信息并将其发送到服务器在线。

我的问题是如何实现这一目标？鉴于facebook sdk教程，我一直在摆弄登录按钮和自定义Ui课程，但我不想让片段存在，因为我甚至不需要它。
有人建议吗？

Answer 1

添加Facebook SDK浏览您的项目，在您的主要活动中，它就像这样

    package com.example.integration;

    import java.util.Arrays;

    import android.app.Activity;
    import android.content.Intent;
    import android.content.SharedPreferences;
    import android.content.SharedPreferences.Editor;
    import android.os.Bundle;
    import android.util.Log;
    import android.widget.Toast;

    import com.facebook.Request;
    import com.facebook.Response;
    import com.facebook.Session;
    import com.facebook.SessionState;
    import com.facebook.model.GraphUser;
    import com.facebook.widget.LoginButton;

    public class MainActivity extends Activity {

        private LoginButton fbLoginBtn;

        private SharedPreferences mPrefs;

        private Session.StatusCallback callback = new Session.StatusCallback() {
            @Override
            public void call(final Session session, final SessionState state, final Exception exception) {
                onSessionStateChange(session, state, exception);
            }
        };

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            uiHelper = new UiLifecycleHelper(MainActivity.this, callback);
            uiHelper.onCreate(savedInstanceState);
            fbLoginBtn = (LoginButton) findViewById(R.id.fb_login_button);
            fbLoginBtn.setReadPermissions(Arrays.asList("email"));

            mPrefs = getPreferences(MODE_PRIVATE);

        }

        @Override
        public void onResume() {
            super.onResume();
            Session session = Session.getActiveSession();
            if (session != null &&
                    (session.isOpened() || session.isClosed()) ) {
                onSessionStateChange(session, session.getState(), null);
            }

        }

@Override
    public void onPause() {
        super.onPause();
        uiHelper.onPause();
    }

@Override
    public void onDestroy() {
        super.onDestroy();
        uiHelper.onDestroy();
    }

        private void onSessionStateChange(final Session session, SessionState state, Exception exception) {

            if (state.isOpened()) {
                Editor edit = mPrefs.edit();
                edit.putString("access_token", session.getAccessToken());
                edit.putString("expires", session.getExpirationDate() + "");
                edit.commit();
                Request.executeMeRequestAsync(session, new Request.GraphUserCallback() {
                    @Override
                    public void onCompleted(GraphUser user, Response response) {

                        if (user != null) {
                            String firstName = user.getFirstName();
                            String lastName = user.getLastName();
                            String id = user.getId();
                            String email = (String) user.asMap().get("email");

                            Log.i("facebookid", id);
                            Log.i("firstName", firstName);
                            Log.i("lastName", lastName);
                            Log.i("AccessToken", session.getAccessToken());
                            Log.i("Email", email);

                            Intent intent = new Intent(MainActivity.this, SecondActivity.class);
                            intent.putExtra("name", firstName);
                            startActivity(intent);
                        }
                    }

                });

            } 

            else if (state.isClosed()) {
                Toast.makeText(this, "Please Login", Toast.LENGTH_SHORT).show();
            }
        }

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

在您的xml中，您需要添加Facebook登录按钮

<com.facebook.widget.LoginButton
        android:id="@+id/fb_login_button"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="5dp"
        facebook:confirm_logout="false"
        facebook:fetch_user_info="true" />

在android中的背景facebook登录和信息检索

1 个答案: