按照官方tutorial中给出的步骤，我尝试进行登录活动并将其集成到我的应用中。但是，每次单击LoginButton时，我的应用程序崩溃。我无法理解我哪里出错了。我已更新清单文件，输入正确的appID并生成相应的keyhash。这是代码和错误日志：
LoginFragment.java：
package com.example.insultdroid;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.UiLifecycleHelper;
import com.facebook.widget.LoginButton;
public class LoginFragment extends Fragment {
private static final String TAG = "LoginFragment";
private UiLifecycleHelper uiHelper;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.activity_fblogin, container, false);
LoginButton fbloginbutton = (LoginButton) view.findViewById(R.id.fbloginbutton);
fbloginbutton.setFragment(this);
return view;
}
private void onSessionStateChange(Session session, SessionState state, Exception exception) {
if (state.isOpened()) {
Log.i(TAG, "Logged in...");
} else if (state.isClosed()) {
Log.i(TAG, "Logged out...");
}
}
private Session.StatusCallback callback = new Session.StatusCallback() {
@Override
public void call(Session session, SessionState state, Exception exception) {
onSessionStateChange(session, state, exception);
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
uiHelper = new UiLifecycleHelper(getActivity(), callback);
uiHelper.onCreate(savedInstanceState);
}
@Override
public void onResume() {
super.onResume();
// For scenarios where the main activity is launched and user
// session is not null, the session state change notification
// may not be triggered. Trigger it if it's open/closed.
Session session = Session.getActiveSession();
if (session != null &&
(session.isOpened() || session.isClosed()) ) {
onSessionStateChange(session, session.getState(), null);
}
uiHelper.onResume();
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
uiHelper.onActivityResult(requestCode, resultCode, data);
}
@Override
public void onPause() {
super.onPause();
uiHelper.onPause();
}
@Override
public void onDestroy() {
super.onDestroy();
uiHelper.onDestroy();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
uiHelper.onSaveInstanceState(outState);
}
}
FBLoginActivity.java：
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
//import android.service.textservice.SpellCheckerService.Session;
public class FBLoginActivity extends FragmentActivity {
private LoginFragment fbloginFragment;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
if (savedInstanceState == null)
{
// Add the fragment on initial activity setup
fbloginFragment = new LoginFragment();
getSupportFragmentManager()
.beginTransaction()
.add(android.R.id.content, fbloginFragment)
.commit();
}
else
{
// Or set the fragment from restored state info
fbloginFragment = (LoginFragment) getSupportFragmentManager().findFragmentById(android.R.id.content);
}
}
FBLoginActivity.xml：
<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".FBLoginActivity"
android:orientation="vertical" >
<com.facebook.widget.LoginButton
android:id="@+id/fbloginbutton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="30dp"
android:layout_marginBottom="30dp" />
</LinearLayout>
AndroidManifest：
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.insultdroid"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="17" />
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.WRITE_SMS" />
<uses-permission android:name="android.permission.INTERNET"/>
<application
android:allowBackup="true"
android:icon="@drawable/angry_android"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.example.insultdroid.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.insultdroid.FavLogActivity"
android:label="@string/title_activity_fav_log" >
</activity>
<activity
android:name="com.example.insultdroid.FBLoginActivity"
android:label="@string/title_activity_fblogin"
android:parentActivityName="com.example.insultdroid.MainActivity" >
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="com.example.insultdroid.MainActivity" />
</activity>
<meta-data android:name="com.facebook.sdk.ApplicationId" android:value="@string/app_id"/>
</application>
这是错误Logcat的输出：
01-13 14:00:34.064: D/AndroidRuntime(16332): Shutting down VM
01-13 14:00:34.064: E/AndroidRuntime(16332): FATAL EXCEPTION: main
01-13 14:00:34.064: E/AndroidRuntime(16332): Process: com.example.insultdroid, PID: 16332
01-13 14:00:34.064: E/AndroidRuntime(16332): com.facebook.FacebookException: Cannot use SessionLoginBehavior SSO_WITH_FALLBACK when com.facebook.LoginActivity is not declared as an activity in AndroidManifest.xml
01-13 14:00:34.064: E/AndroidRuntime(16332): at com.facebook.Session.validateLoginBehavior(Session.java:1031)
01-13 14:00:34.064: E/AndroidRuntime(16332): at com.facebook.Session.open(Session.java:953)
01-13 14:00:34.064: E/AndroidRuntime(16332): at com.facebook.Session.openForRead(Session.java:388)
01-13 14:00:34.064: E/AndroidRuntime(16332): at com.facebook.widget.LoginButton$LoginClickListener.onClick(LoginButton.java:713)
01-13 14:00:34.064: E/AndroidRuntime(16332): at android.view.View.performClick(View.java:4438)
01-13 14:00:34.064: E/AndroidRuntime(16332): at android.view.View$PerformClick.run(View.java:18422)
01-13 14:00:34.064: E/AndroidRuntime(16332): at android.os.Handler.handleCallback(Handler.java:733)
01-13 14:00:34.064: E/AndroidRuntime(16332): at android.os.Handler.dispatchMessage(Handler.java:95)
01-13 14:00:34.064: E/AndroidRuntime(16332): at android.os.Looper.loop(Looper.java:136)
01-13 14:00:34.064: E/AndroidRuntime(16332): at android.app.ActivityThread.main(ActivityThread.java:5017)
01-13 14:00:34.064: E/AndroidRuntime(16332): at java.lang.reflect.Method.invoke(Native Method)
01-13 14:00:34.064: E/AndroidRuntime(16332): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
01-13 14:00:34.064: E/AndroidRuntime(16332): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
请有人帮助我！谢谢！
答案 0 :(得分：1)
您的清单文件中未定义FBLoginActivity和LoginFragment