如何将Facebook登录集成到Android应用程序

概述我正在尝试将Facebook登录信息集成到我的应用中我看了本教程：https://developers.facebook.com/docs/android/getting-started/facebook-sdk-for-android/下载的FacebookSDK3.5一步一步-下载openssl,创建一个androidkeystore,生成hashkey,在facebook开发控制台中创建一个应用程

我正在尝试将Facebook登录信息集成到我的应用中

我看了本教程：https://developers.facebook.com/docs/android/getting-started/facebook-sdk-for-android/

下载的Facebook SDK 3.5

一步一步-下载openssl,创建一个androIDkeystore,生成hashkey,在facebook开发控制台中创建一个应用程序,给它提供我的包名称,登录的活动以及在日志控制台中由设备打印给我的哈希码,如下所示：本教程建议我使用openssl生成的hashkey,将app_ID添加到字符串文件,并将所需的权限活动和元数据添加到androID清单文件

现在我打开该应用程序,然后单击“使用facebook登录”
它要求我允许访问用户个人资料,我单击确定

然后日志显示此异常：

10-16 19:51:20.718: W/Bundle(8444): Key com.facebook.platform.protocol.PROTOCol_VERSION expected String but value was a java.lang.Integer.  The default value <null> was returned.10-16 19:51:20.718: W/Bundle(8444): Attempt to cast generated internal exception:10-16 19:51:20.718: W/Bundle(8444): java.lang.classCastException: java.lang.Integer10-16 19:51:20.718: W/Bundle(8444):     at androID.os.Bundle.getString(Bundle.java:1040)10-16 19:51:20.718: W/Bundle(8444):     at androID.content.Intent.getStringExtra(Intent.java:3412)10-16 19:51:20.718: W/Bundle(8444):     at com.facebook.AuthorizationClIEnt$KatanaLoginDialogAuthHandler.tryAuthorize(AuthorizationClIEnt.java:829)10-16 19:51:20.718: W/Bundle(8444):     at com.facebook.AuthorizationClIEnt.tryCurrentHandler(AuthorizationClIEnt.java:278)10-16 19:51:20.718: W/Bundle(8444):     at com.facebook.AuthorizationClIEnt.tryNextHandler(AuthorizationClIEnt.java:244)10-16 19:51:20.718: W/Bundle(8444):     at com.facebook.AuthorizationClIEnt$GetTokenAuthHandler.getTokenCompleted(AuthorizationClIEnt.java:778)10-16 19:51:20.718: W/Bundle(8444):     at com.facebook.AuthorizationClIEnt$GetTokenAuthHandler.completed(AuthorizationClIEnt.java:737)10-16 19:51:20.718: W/Bundle(8444):     at com.facebook.internal.PlatformServiceClIEnt.callback(PlatformServiceClIEnt.java:144)10-16 19:51:20.718: W/Bundle(8444):     at com.facebook.internal.PlatformServiceClIEnt.handleMessage(PlatformServiceClIEnt.java:128)10-16 19:51:20.718: W/Bundle(8444):     at com.facebook.internal.PlatformServiceClIEnt.handleMessage(PlatformServiceClIEnt.java:54)10-16 19:51:20.718: W/Bundle(8444):     at androID.os.Handler.dispatchMessage(Handler.java:99)10-16 19:51:20.718: W/Bundle(8444):     at androID.os.Looper.loop(Looper.java:130)10-16 19:51:20.718: W/Bundle(8444):     at androID.app.ActivityThread.main(ActivityThread.java:3906)10-16 19:51:20.718: W/Bundle(8444):     at java.lang.reflect.Method.invokeNative(Native Method)10-16 19:51:20.718: W/Bundle(8444):     at java.lang.reflect.Method.invoke(Method.java:507)10-16 19:51:20.718: W/Bundle(8444):     at com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:840)10-16 19:51:20.718: W/Bundle(8444):     at com.androID.internal.os.ZygoteInit.main(ZygoteInit.java:598)10-16 19:51:20.718: W/Bundle(8444):     at dalvik.system.NativeStart.main(Native Method)

这是一个警告,该应用并未因此而崩溃,但登录本身失败

这是我的登录流程代码：

 import androID.content.Intent;import androID.os.Bundle;import androID.support.v4.app.Fragment;import androID.support.v4.app.FragmentActivity;import androID.support.v4.app.FragmentManager;import androID.support.v4.app.FragmentTransaction;import com.facebook.Session;import com.facebook.SessionState;import com.facebook.UilifecycleHelper;public class MainActivity extends FragmentActivity {private static final int SPLASH = 0;private static final int SELECTION = 1;private static final int FRAGMENT_COUNT = SELECTION + 1;private Fragment[] fragments = new Fragment[FRAGMENT_COUNT];private boolean isResumed = false;private UilifecycleHelper uiHelper;private Session.StatusCallback callback =     new Session.StatusCallback() {    @OverrIDe    public voID call(Session session,             SessionState state, Exception exception) {        onSessionStateChange(session, state, exception);    }};/** * @param savedInstanceState */@OverrIDeprotected voID onCreate(Bundle savedInstanceState) {    // Todo auto-generated method stub    super.onCreate(savedInstanceState);    uiHelper = new UilifecycleHelper(this, callback);    uiHelper.onCreate(savedInstanceState);    setContentVIEw(R.layout.activity_main);    FragmentManager fm = getSupportFragmentManager();    fragments[SPLASH] = fm.findFragmentByID(R.ID.splashFragment);    fragments[SELECTION] = fm.findFragmentByID(R.ID.selectionFragment);    FragmentTransaction transaction = fm.beginTransaction();    for (int i = 0; i < fragments.length; i++) {        transaction.hIDe(fragments[i]);    }    transaction.commit();}private voID showFragment(int fragmentIndex, boolean addToBackStack) {    FragmentManager fm = getSupportFragmentManager();    FragmentTransaction transaction = fm.beginTransaction();    for (int i = 0; i < fragments.length; i++) {        if (i == fragmentIndex) {            transaction.show(fragments[i]);        } else {            transaction.hIDe(fragments[i]);        }    }    if (addToBackStack) {        transaction.addToBackStack(null);    }    transaction.commit();}@OverrIDepublic voID onResume() {    super.onResume();    uiHelper.onResume();    isResumed = true;}@OverrIDepublic voID onPause() {    super.onPause();    uiHelper.onPause();    isResumed = false;}@OverrIDepublic voID onActivityResult(int requestCode, int resultCode, Intent data) {    super.onActivityResult(requestCode, resultCode, data);    uiHelper.onActivityResult(requestCode, resultCode, data);}@OverrIDepublic voID onDestroy() {    super.onDestroy();    uiHelper.onDestroy();}@OverrIDeprotected voID onSaveInstanceState(Bundle outState) {    super.onSaveInstanceState(outState);    uiHelper.onSaveInstanceState(outState);}private voID onSessionStateChange(Session session, SessionState state, Exception exception) {    // Only make changes if the activity is visible    if (isResumed) {        FragmentManager manager = getSupportFragmentManager();        // Get the number of entrIEs in the back stack        int backStackSize = manager.getBackStackEntryCount();        // Clear the back stack        for (int i = 0; i < backStackSize; i++) {            manager.popBackStack();        }        if (state.isOpened()) {            // If the session state is open:            // Show the authenticated fragment            showFragment(SELECTION, false);        } else if (state.isClosed()) {            // If the session state is closed:            // Show the login fragment            showFragment(SPLASH, false);        }    }}@OverrIDeprotected voID onResumeFragments() {    super.onResumeFragments();    Session session = Session.getActiveSession();    if (session != null && session.isOpened()) {        // if the session is already open,        // try to show the selection fragment        showFragment(SELECTION, false);    } else {        // otherwise present the splash screen        // and ask the person to login.        showFragment(SPLASH, false);    }}

}

我究竟做错了什么？为什么不起作用？

解决方法:

问题是-

教程页面上的任何地方都没有说如果我尝试使用不是Facebook应用程序管理员或定义的假帐户之一的帐户登录,则必须退出沙盒模式

一旦我将应用程序置于实时模式,它就会起作用

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