我正在尝试将 facebook 与我的 Android 应用程序集成。我已经实现了“developers.facebook.com”提供的代码，但收到错误“java.lang.NoClassDefFoundError:android.support.v4.content.LocalBroadcastManager”。我已经尝试了所有可能的解决方案，但没有一个有效。我还用 facebook-sdk 的 android-support-v4.jar 替换了 android-support-v4.jar 但仍然遇到相同的错误。代码是-
package com.example.facebooklogin;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.widget.TextView;
import com.facebook.*;
import com.facebook.model.*;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// start Facebook Login
Session.openActiveSession(this, true, new Session.StatusCallback() {
// callback when session changes state
@Override
public void call(Session session, SessionState state, Exception exception) {
if (session.isOpened()) {
// make request to the /me API
Request.newMeRequest(session, new Request.GraphUserCallback() {
// callback after Graph API response with user object
@Override
public void onCompleted(GraphUser user, Response response) {
if (user != null) {
TextView welcome = (TextView) findViewById(R.id.welcome);
welcome.setText("Hello " + user.getName() + "!");
}
}
}).executeAsync();
}
}
});
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
}
}
日志猫:
05-23 03:10:53.172: W/dalvikvm(1578): VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
05-23 03:10:53.172: W/dalvikvm(1578): VFY: unable to find class referenced in signature (Landroid/support/v4/app/Fragment;)
05-23 03:10:53.182: I/dalvikvm(1578): Could not find method android.support.v4.content.LocalBroadcastManager.getInstance, referenced from method com.facebook.Session.postActiveSessionAction
05-23 03:10:53.182: W/dalvikvm(1578): VFY: unable to resolve static method 216: Landroid/support/v4/content/LocalBroadcastManager;.getInstance (Landroid/content/Context;)Landroid/support/v4/content/LocalBroadcastManager;
05-23 03:10:53.182: D/dalvikvm(1578): VFY: replacing opcode 0x71 at 0x0009
05-23 03:10:53.492: D/AndroidRuntime(1578): Shutting down VM
05-23 03:10:53.492: W/dalvikvm(1578): threadid=1: thread exiting with uncaught exception (group=0xb3a63b90)
05-23 03:10:53.542: E/AndroidRuntime(1578): FATAL EXCEPTION: main
05-23 03:10:53.542: E/AndroidRuntime(1578): Process: com.example.facebooklogin, PID: 1578
05-23 03:10:53.542: E/AndroidRuntime(1578): java.lang.NoClassDefFoundError: android.support.v4.content.LocalBroadcastManager
05-23 03:10:53.542: E/AndroidRuntime(1578): at com.facebook.Session.postActiveSessionAction(Session.java:1327)
05-23 03:10:53.542: E/AndroidRuntime(1578): at com.facebook.Session.setActiveSession(Session.java:790)
05-23 03:10:53.542: E/AndroidRuntime(1578): at com.facebook.Session.openActiveSession(Session.java:890)
05-23 03:10:53.542: E/AndroidRuntime(1578): at com.facebook.Session.openActiveSession(Session.java:830)
05-23 03:10:53.542: E/AndroidRuntime(1578): at com.example.facebooklogin.MainActivity.onCreate(MainActivity.java:23)
05-23 03:10:53.542: E/AndroidRuntime(1578): at android.app.Activity.performCreate(Activity.java:5243)
05-23 03:10:53.542: E/AndroidRuntime(1578): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
05-23 03:10:53.542: E/AndroidRuntime(1578): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2140)
05-23 03:10:53.542: E/AndroidRuntime(1578): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2226)
05-23 03:10:53.542: E/AndroidRuntime(1578): at android.app.ActivityThread.access$700(ActivityThread.java:135)
05-23 03:10:53.542: E/AndroidRuntime(1578): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1397)
05-23 03:10:53.542: E/AndroidRuntime(1578): at android.os.Handler.dispatchMessage(Handler.java:102)
05-23 03:10:53.542: E/AndroidRuntime(1578): at android.os.Looper.loop(Looper.java:137)
05-23 03:10:53.542: E/AndroidRuntime(1578): at android.app.ActivityThread.main(ActivityThread.java:4998)
05-23 03:10:53.542: E/AndroidRuntime(1578): at java.lang.reflect.Method.invokeNative(Native Method)
05-23 03:10:53.542: E/AndroidRuntime(1578): at java.lang.reflect.Method.invoke(Method.java:515)
05-23 03:10:53.542: E/AndroidRuntime(1578): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
05-23 03:10:53.542: E/AndroidRuntime(1578): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
05-23 03:10:53.542: E/AndroidRuntime(1578): at dalvik.system.NativeStart.main(Native Method)
最佳答案
//登录第一类
public class LoginScreen extends FragmentActivity implements OnClickListener
{
FragmentTransaction transaction;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.login_screen);
MainFragment mainFrag=new MainFragment();
FragmentManager manager=getSupportFragmentManager();//create an instance of fragment manager
transaction=manager.beginTransaction();
transaction.add(R.id.MyFrameLayout,mainFrag, "userlogin");
transaction.commit();
}
}
//主类的xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<FrameLayout
android:layout_below="@+id/icon"
android:id="@+id/MyFrameLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="5dp">
</FrameLayout>
</RelativeLayout>
//主Fragment.java
package com.example.freejeetoproject;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.Arrays;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import com.facebook.Request;
import com.facebook.Response;
import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.UiLifecycleHelper;
import com.facebook.model.GraphUser;
import com.facebook.widget.LoginButton;
import android.annotation.SuppressLint;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.ParseException;
import android.os.Bundle;
import android.os.StrictMode;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
public class MainFragment extends Fragment
{
private static final String TAG = "MainFragment";
private UiLifecycleHelper uiHelper;
private static final int REAUTH_ACTIVITY_CODE = 100;
//private GraphUser user;
Context context;
@Override
public View onCreateView(LayoutInflater inflater,
ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_mainlogin, container, false);
Button authButton = (Button) view.findViewById(R.id.authButton);
((LoginButton) authButton).setFragment(this);
// read permission for email
((LoginButton) authButton).setReadPermissions(Arrays.asList("email"));
return view;
}
private Session.StatusCallback callback = new Session.StatusCallback() {
@Override
public void call(Session session, SessionState state, Exception exception) {
onSessionStateChange(session, state, exception);
}
};
@SuppressLint("NewApi")
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
uiHelper = new UiLifecycleHelper(getActivity(), callback);
uiHelper.onCreate(savedInstanceState);
}
private void onSessionStateChange(Session session, SessionState state, Exception exception) {
}
private void makeMeRequest(final Session session) {
// Make an API call to get user data and define a
// new callback to handle the response.
Request request = Request.newMeRequest(session,
new Request.GraphUserCallback() {
@Override
public void onCompleted(GraphUser user, Response response) {
// If the response is successful
if (session == Session.getActiveSession()) {
if (user != null) {
// Set the id for the ProfilePictureView
// view that in turn displays the profile picture.
// profilePictureView.setProfileId(user.getId());
Log.e("name",user.getName());
String email=(String) response.getGraphObject().getProperty("email");
Log.e("email",email);
if (response.getError() != null) {
// Handle errors, will do so later.
}
}
});
request.executeAsync();
}
@Override
public void onResume() {
super.onResume();
/*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);
// if (requestCode == REAUTH_ACTIVITY_CODE) {
uiHelper.onActivityResult(requestCode, resultCode, data);
Log.e("on","activityResult");
}
@Override
public void onPause() {
super.onPause();
uiHelper.onPause();
Log.e("on","pause");
}
@Override
public void onDestroy() {
super.onDestroy();
uiHelper.onDestroy();
Log.e("on","destroy");
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
uiHelper.onSaveInstanceState(outState);
Log.e("on","SaveInstaneState");
}
}
//主片段的 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:orientation="vertical">
<com.facebook.widget.LoginButton
android:id="@+id/authButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
/>
</LinearLayout>
关于java - 在 Android 应用程序中使用 facebook 登录，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/23823248/