Question

我想在我的Android应用中添加登录facebook功能。我怎样才能做到这一点？是对的吗？ https://developers.facebook.com/docs/facebook-login/android

Answer 1

第一步

您注册了自己的应用吗？如果您没有，请转到https://developers.facebook.com/apps/，点击右上角的添加新应用并按照说明操作。

第二步

第二步是将Facebook SDK添加到您的项目。您可以按照https://developers.facebook.com/docs/android/getting-started

进行操作

在Android Studio中，使用API 15作为最低SDK
Facebook SDK可在Maven Central上使用，因此请修改build.gradle并在repositories { mavenCentral() }之前添加dependencies
然后，在compile 'com.facebook.android:facebook-android-sdk:4.7.0

dependencies

构建项目并将Facebook SDK初始化到您的应用程序

代码如下：

import com.facebook.FacebookSdk;

@Override
 public void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
     FacebookSdk.sdkInitialize(getApplicationContext());
}

第三步

您在注册应用时收到的Facebook应用ID应添加到strings.xml。

<string name="facebook_app_id">123456908761030</string>

你必须编辑你的AndroidManifest.xml添加一个INTERNET uses-permission（能够连接到Facebook的服务器）和一个meta-data添加到Application元素（用于Facebook App ID）。

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

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

第四步

将FacebookActivity定义为您的清单中的另一个活动。如果处理大多数配置使用configChanges自行更改。

<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" />

第五步

在XML布局中创建/添加登录按钮（无论您想要的位置）。

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

第六步

在您的活动中，将您在布局中定义的小部件声明为类的字段。

private LoginButton loginButton;

将CallbackManager声明为另一个字段来管理应用中使用的回调。

private CallbackManager callbackManager;

初始化您的CallbackManager。

实例

callbackManager = CallbackManager.Factory.create();

使用findViewById初始化窗口小部件。

loginButton = (LoginButton) view.findViewById(R.id.usersettings_fragment_login_button);

最后一步

创建一个回调来处理登录结果：

如果登录尝试成功，则调用onSuccess
如果用户取消登录尝试，则调用onCancel
如果发生错误，则调用onError

代码是：

loginButton.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
    @Override
    public void onSuccess(LoginResult loginResult) {
        // App code
    }

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

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

然后，在onActivityResult()：

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

有些链接

TutsTlus教程：LINK

应用示例（slidenerd）：LINK

视频教程（slidenerd）：LINK

获取用户信息：LINK

Answer 2

            **Process Login With Facebook**
        **Working on Play Store** 

    **Link 

 - https://play.google.com/store/apps/details?id=com.codecube.airbucks&hl=en

**



            Registered your new app? If you didn't, go to https://developers.facebook.com/apps/, click Add a New App in the top right and follow the instructions. **step by step**

            **Manifest Permission**
            <uses-permission android:name="android.permission.INTERNET" />
                <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
                <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

            **build.Gradle Dependency**
            compile 'com.facebook.android:facebook-android-sdk:4.8.0'  // in airbuck

                /*compile 'com.facebook.android:facebook-android-sdk:[4,5)'*/


             <activity android:name="com.facebook.FacebookActivity"
                        android:theme="@android:style/Theme.Translucent.NoTitleBar"
                        android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
                        android:label="@string/app_name" />
                    <meta-data android:name="com.facebook.sdk.ApplicationName"
                        android:value="@string/app_name" />
                    <meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/facebook_app_id"/>

                    <provider android:authorities="com.facebook.app.FacebookContentProvider1854328631556764"
                        android:name="com.facebook.FacebookContentProvider"
                        android:exported="true"/> 

        **Layout Xml Code**
        <com.facebook.login.widget.LoginButton
                android:id="@+id/login_button"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                />

        **Put own generate facebook Key in String.xml File** 
        <string name="facebook_app_id">1854328631556764</string>
            <string name="fb_login_protocol_scheme">fb1854328631556764</string>

            **MainActivity CODE**
             protected void onCreate(Bundle savedInstanceState) {
                    super.onCreate(savedInstanceState);
                    setContentView(R.layout.activity_main1);
                    FacebookSdk.sdkInitialize(this.getApplicationContext());
                    AppEventsLogger.activateApp(this);   

                    callbackManager = CallbackManager.Factory.create();
                    fbloginButton = (LinearLayout) findViewById(R.id.facebook_button);


                    fbloginButton.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {

                                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                                    int permissionCheck = ContextCompat.checkSelfPermission(MainActivity.this,
                                            android.Manifest.permission.CAMERA);
                                    if (permissionCheck == PackageManager.PERMISSION_GRANTED) {
                                        //showing dialog to select image
                                        callFacebook();
                                        Log.e("permission", "granted");
                                    } else {
                                        ActivityCompat.requestPermissions(MainActivity.this,
                                                new String[]{android.Manifest.permission.READ_EXTERNAL_STORAGE,
                                                        android.Manifest.permission.WRITE_EXTERNAL_STORAGE, android.Manifest.permission.CAMERA}, 1);
                                    }
                                } else {
                                    callFacebook();
                                }
                        }
                    });
                }

             **CAllOnFAcebook**
                public void callFacebook() {

                    callbackManager = CallbackManager.Factory.create();

            //        LoginManager.getInstance().logInWithReadPermissions(MainActivity2.this, Arrays.asList("email"));

                    LoginManager.getInstance().logInWithReadPermissions(MainActivity.this, Arrays.asList("public_profile"));

                    LoginManager.getInstance().registerCallback(callbackManager, new FacebookCallback<LoginResult>() {

                        @Override
                        public void onSuccess(LoginResult loginResult) {
                            Log.e("keshav","onSuccess called ");
                            GraphRequest request = GraphRequest.newMeRequest(
                                    loginResult.getAccessToken(),
                                    new GraphRequest.GraphJSONObjectCallback() {
                                        @Override
                                        public void onCompleted(
                                                JSONObject object,
                                                GraphResponse response) {
                                            // Application code
                                            Log.v("LoginActivityfacebook", response.toString());

                                            try {
                                                JSONObject data = response.getJSONObject();
                                                facebookName = data.getString("name");
                                                facebookEmail = data.getString("email");
                                                facebookId = data.getString("id");
                                                facebookLink = data.getString("link");
                                                facebookLink = facebookLink.replace("https://www.facebook.com/app_scoped_user_id/", "");
                                                facebookLink = facebookLink.replace("/", "");
                                                Log.e("profilelink", "" + facebookLink);
                                                facebookLink = "https://graph.facebook.com/" + facebookLink + "/picture";

                                                Log.e("facebookName", "is  ->  " + facebookName);
                                                Log.e("facebookEmail", "is  ->  " + facebookEmail);
                                                Log.e("facebookId", "is  ->  " + facebookId);
                                                Log.e("facebookLink", "is  ->  " + facebookLink);


                                                    Log.e("Keshav","Suceesfully Login "+facebookName);



                                                } else {
                                                    CommonMethod.showAlert("Intenet Connectivity Failure", MainActivity.this);
                                                }
                                            } catch (JSONException e) {
                                                // TODO Auto-generated catch block
                                                e.printStackTrace();
                                            }
                                        }
                                    });
                            Bundle parameters = new Bundle();
                            parameters.putString("fields", "id,name,email,gender, birthday,link");
                            request.setParameters(parameters);
                            request.executeAsync();
                        }

                        @Override
                        public void onCancel() {
                            // App code
                            Log.i(TAG, "cancelTriggered");
                        }

                        @Override
                        public void onError(FacebookException exception) {
                            // App code
                            Log.i(TAG, "errorTriggered");
                        }
                    });
                    LoginManager.getInstance().logOut();                //  TODO Add Me Using this previous facebook login id password logout
                }


            **Process Login With Facebook**
        **Working on Play Store** 

    **Link https://play.google.com/store/apps/details?id=com.codecube.airbucks&hl=en**

用facebook登录到Android应用程序

2 个答案: