java - Facebook SDK - 登录后没有任何反应

Question

目前创建了一个 Facebook 登录按钮，我现在正尝试在成功登录后重定向到一个新 Activity 。为此，我当然会使用 onSucces() 函数。

但是，当我在我的应用程序上单击登录时，它会加载，但没有任何反应。它停留在登录页面。

我的 LoginActivity 代码:

package com.example.frederik.testpleasework;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;

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

public class LoginActivity extends Activity {

    LoginButton login;
    TextView info;
    CallbackManager callbackManager;

    //Creating and initializing the feature(Code from Facebook install guide)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        FacebookSdk.sdkInitialize(getApplicationContext()); //Calls for the facebook feature
        callbackManager = CallbackManager.Factory.create(); //Initializing callback, checking login result
        setContentView(R.layout.content_main);
        info = (TextView) findViewById(R.id.info);
        login = (LoginButton) findViewById(R.id.login_button);

        login.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
            @Override
            public void onSuccess(LoginResult loginResult) {
                Intent i = new Intent(LoginActivity.this, LandingActivity.class);
                startActivity(i);
            }

            @Override
            public void onCancel() {

            }

            @Override
            public void onError(FacebookException e) {

            }
        });
    }

}

以及我下一个 Activity (LandingActivity) 的代码:

package com.example.frederik.testpleasework;

import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;

public class LandingActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.content_landing);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });
    }

}

我假设错误出在其中一个类中，但如果您需要其他代码部分的更多信息，请随时提出请求。

编辑，androidmanifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.frederik.testpleasework" >

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:theme="@style/AppTheme.NoActionBar" >
        </activity>
        <activity
            android:name="com.facebook.FacebookActivity"
            android:configChanges="keyboard|keyboardHidden|screenLayout|screenSize|orientation"
            android:label="@string/app_name"
            android:theme="@android:style/Theme.Translucent.NoTitleBar" />
        <activity android:name=".LoginActivity" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

        <meta-data
            android:name="com.facebook.sdk.ApplicationId"
            android:value="@string/fbid" />

        <uses-permission android:name="android.permission.CAMERA" />
 //Requests permission to use the camera
        <uses-feature android:name="android.hardware.camera" />
 //A device NEEDS to have a camera to install the app
        <activity
            android:name=".LandingActivity"
            android:label="@string/title_activity_landing"
            android:theme="@style/AppTheme.NoActionBar" >
        </activity>
    </application>

</manifest>

Answer 1

第一步，初始化facebook sdk:

FacebookSdk.sdkInitialize(this.getApplicationContext());

第二步，创建回调管理器:

CallbackManager callbackManager = CallbackManager.Factory.create();

第三步，添加读取权限:

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

下一步，注册回调:

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

上面的所有代码都可以放在onCreate 方法中。最后，你必须添加 onActivityResult 用于回调:

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

试试这个代码，希望对你有帮助。您可以引用 this .