Android的Facebook 4.0.1无效的密钥哈希错误

Question

我完全按照在Facebook上的开发人员页面告知在Facebook上登录的人。我的代码运行良好。 但是，当用户注销并尝试再次通过Facebook登录时，它会给出无效的密钥哈希错误。我不知道我的代码有什么问题。

的Manifest.xml

<application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:theme="@android:style/Theme.NoTitleBar" > 
     <activity 
      android:name="com.example.helltop.MainActivity" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 
       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity 
      android:name=".GameActivity" 
      android:screenOrientation="portrait"></activity> 
     <activity 
      android:name=".HelpActivity" 
      android:screenOrientation="portrait"></activity> 
     <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" /> 
     <meta-data android:name="com.facebook.sdk.ApplicationId" 
       android:value="@string/facebook_app_id" /> 

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

     <provider android:authorities="com.facebook.app.FacebookContentProvider137..." 
      android:name="com.facebook.FacebookContentProvider" 
      android:exported="true"/> 

    </application> 

登录活动

CallbackManager callbackManager; 
    LoginButton btnFbLogin; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

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

     setContentView(R.layout.loginactivity); 

     btnFbLogin = (LoginButton) findViewById(R.id.btn_fblogin); btnFbLogin.setOnClickListener(this);btnFbLogin.setCompoundDrawablesRelativeWithIntrinsicBounds(0, 0, 0, 0); 

     LoginManager.getInstance().registerCallback(callbackManager, 
       new FacebookCallback<LoginResult>() { 
        @Override 
        public void onSuccess(LoginResult loginResult) { 
         fbLoginGetUserData(loginResult.getAccessToken()); 
        } 
        @Override 
        public void onCancel() { 
         Toast.makeText(LoginActivity.this, "Facebook Login Canceled!" , Toast.LENGTH_SHORT).show(); 
        } 
        @Override 
        public void onError(FacebookException error) { 
         Toast.makeText(LoginActivity.this, "ERROR : " + error.getMessage() , Toast.LENGTH_SHORT).show(); 
        } 
       }); 
     btnFbLogin.setReadPermissions(Arrays.asList("public_profile", "email", "user_birthday")); 
     profileTracker = new ProfileTracker() { 
      @Override 
      protected void onCurrentProfileChanged(Profile oldProfile, Profile currentProfile) { 

      } 
     }; 
    } 

private void fbLoginGetUserData(AccessToken accessToken) { 

     GraphRequest request = GraphRequest.newMeRequest(accessToken, new GraphRequest.GraphJSONObjectCallback() { 

      @Override 
      public void onCompleted(JSONObject object, GraphResponse response) { 
       if(response.getError() != null){ 
        showAlert(response.getError().getErrorCode() + " : " + response.getError().getErrorMessage(), "Facebook Error!"); 
       } else { 
        // Get the data here 
       } 
      } 
     }); 

     Bundle parameters = new Bundle(); 
     parameters.putString("fields", "id,first_name,last_name,link,birthday,email,gender,middle_name"); 
     request.setParameters(parameters); 
     request.executeAsync(); 
    } 

在这里，我如何创建我的版本的密钥库和我的应用程序对于Facebook的哈希键。

keytool -genkey -alias myreleasekey-keyalg RSA -keystore %USERPROFILE%\.android\myapprelease.keystore -keysize 2048 -validity 10000 

keytool -exportcert -alias myreleasekey -keystore ~/myapprelease.keystore | "C:\OpenSSL\bin\openssl" sha1 -binary | "C:\OpenSSL\bin\openssl" base64 

Answer 1

public class MyApplication extends Application { 

    @Override 
    public void onCreate() { 
     super.onCreate(); 

     printHashKey(); 
    } 

    public void printHashKey(){ 

     try { 
      PackageInfo info = getPackageManager().getPackageInfo(
        "com.parakhidevelopers.happydays", 
        PackageManager.GET_SIGNATURES); 
      for (Signature signature : info.signatures) { 
       MessageDigest md = MessageDigest.getInstance("SHA"); 
       md.update(signature.toByteArray()); 
       Log.d("Key Hash:", Base64.encodeToString(md.digest(), Base64.DEFAULT)); 
      } 
     } catch (PackageManager.NameNotFoundException e) { 

     } catch (NoSuchAlgorithmException e) { 

     } 
    } 
}