如何在android中使用sdk 4.1.0登录facebook？

Question

[我正在为我的应用程序编写我的登录页面的代码.我已经使用给定的电子邮件和密码使我的登录成功但是我在编写用于登录facebook的代码时遇到了问题.我已经检查了这个https: //developers.facebook.com/docs/facebook-login/android/v2.3

但是我仍然按照说明运行我的代码时遇到错误.我是android开发的新手......所以任何适当的帮助都会值得称赞.提前谢谢.] 1

Answer 1

如果你是什么customlogin按钮然后

在创造meathod

FacebookSdk.sdkInitialize(this.getApplicationContext());

    callbackManager = CallbackManager.Factory.create(); // declare it globally "CallbackManager callbackManager "

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

        @Override
        public void onSuccess(LoginResult result) 
        {
            // TODO Auto-generated method stub
            Log.d("LoginManager", "On Success");
        }

        @Override
        public void onError(FacebookException error) {
            // TODO Auto-generated method stub
            Log.d("LoginManager", "On Error");
        }

        @Override
        public void onCancel() {
            // TODO Auto-generated method stub
            Log.d("LoginManager", "On Cancel");
        }
    });

在任何按钮上单击调用此按钮

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

onActivity结果

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

Answer 2

在这里,我用sdk4为facebook登录提供了一个有效的解决方案.

首先在依赖项下添加对build.gradle(Module app)的依赖{......

compile 'com.facebook.android:facebook-android-sdk:4.1.0' 然后同步Gradle ....此后,在Android Manifest中进行以下更改: -

<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.USE_CREDENTIALS" />
 <meta-data
        android:name="com.facebook.sdk.ApplicationId"
        android:value="@string/app_id"/> //write the app_id u have generated in res/values/strings.xml folder.
<provider android:authorities="com.facebook.app.FacebookContentProvider456579934439214"
              android:name="com.facebook.FacebookContentProvider"
              android:exported="true" />

 <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" />

在此之后,在您的MainActivity类中编写以下代码:

    public class MainActivity extends ActionBarActivity {
LoginButton loginButton;
CallbackManager callbackManager;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    FacebookSdk.sdkInitialize(this.getApplicationContext());
    callbackManager = CallbackManager.Factory.create();

    setContentView(R.layout.activity_main);

    loginButton = (LoginButton) findViewById(R.id.login_button);
    loginButton.setReadPermissions("email", "user_likes", "user_friends");

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

            //callback registration

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

                            LoginManager.getInstance().logInWithReadPermissions(MainActivity.this, Arrays.asList("public_profile", "user_friends"));
                            Log.e("-->", Arrays.asList("public_profile", "user_friends").toString());
                            Toast.makeText(getApplication(), "success", Toast.LENGTH_SHORT).show();


                        }

                        @Override
                        public void onCancel() {
                            // App code
                            Toast.makeText(getApplication(),"fail",Toast.LENGTH_SHORT).show();
                        }

                        @Override
                        public void onError(FacebookException exception) {
                            // App code
                            Toast.makeText(getApplication(),"error",Toast.LENGTH_SHORT).show();
                        }
                    });
        }
    });

}



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

}

我的activity_main.xml文件如下: -

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:tools="http://schemas.android.com/tools"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:paddingLeft="@dimen/activity_horizontal_margin"
            android:paddingRight="@dimen/activity_horizontal_margin"
            android:paddingTop="@dimen/activity_vertical_margin"
            android:paddingBottom="@dimen/activity_vertical_margin"
            tools:context=".MainActivity">

<com.facebook.login.widget.LoginButton
    android:id="@+id/login_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:layout_marginTop="30dp"
    android:layout_marginBottom="30dp" />

您可以根据要求自定义按钮