Facebook Android SDK problems_问答_开发者_运维开发者技术经验分享

I'm following a tutorial I found on this website http://www.helloandroid.com/tutorials/using-facebook-sdk-android-development-part-2 and when I inserted the 2 sets of code segments in the classes the tutorial specifies I get 4 facebook sdk related errors. I inserted to the code segments bellow with the errors bold/starred.

Does anyone have any idea how I can fix these errors?

Here are the error messages i get when i mouse over the errors, in order:

1.onCreate(Bundle savedInstanceState) : The method onCreate(Bundle) of type main must override or implement a supertype method

btnLogin.setOnClickListener(new OnClickListener() : OnClickListener cannot be resolved to a type
LoginDialogListener : The type FBConnectionActivity.LoginDialogListener must implement the inherited abstract method Facebook.DialogListener.onComplete(Bundle)
onComplete(Bundle values) : The method onComplete(Bundle) of type FBConnectionActivity.LoginDialogListener must override or implement a supertype method

Segment 1 (2 errors) : In this part the errors are at the oncreate and the onclicklistener

  package com.outfit.first;

import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;

public class main extends FBConnectionActivity {
    private TextView txtUserName;
    private ProgressBar pbLogin;
    private Button btnLogin;

@Override
public void **onCreate(Bundle savedInstanceState)** {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    txtUserName = (TextView) findViewById(R.id.textFacebook);
    pbLogin = (ProgressBar) findViewById(R.id.progressLogin);
    btnLogin = (Button) findViewById(R.id.buttonLogin);
            btnLogin.setOnClickListener(new **OnClickListener**() {
                    @Override
                    public void onClick(View arg0) {
                            pbLogin.setVisibility(ProgressBar.VISIBLE);
                            setConnection();
                            getID(txtUserName, pbLogin);
                    }
            });
}
}

Segment 2 (2 errors): In this part the errors are at the LoginDialogListener class and the onComplete(Bundle values) inside that class.

package com.outfit.first;

import com.facebook.android.AsyncFacebookRunner;
import com.facebook.android.Facebook;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.util.Log;
import android.widget.ProgressBar;
import android.widget.TextView;

public abstract class FBConnectionActivity extends Activity {
    public static final String TAG = "FACEBOOK";
    private Facebook mFacebook;
    public static final String APP_ID = "136907069717004";
    private AsyncFacebookRunner mAsyncRunner;
    private static final String[] PERMS = new String[] { "read_stream" };
    private SharedPreferences sharedPrefs;
    private Context mContext;

    private TextView username;
    private ProgressBar pb;

    public void setConnection() {
            mContext = this;
            mFacebook = new Facebook(APP_ID);
            mAsyncRunner = new AsyncFacebookRunner(mFacebook);
    }

    public void getID(TextView txtUserName, ProgressBar progbar) {
            username = txtUserName;
            pb = progbar;
            if (isSession()) {
                    Log.d(TAG, "sessionValid");
                    mAsyncRunner.**request**("me", new IDRequestListener());
            } else {
                    // no logged in, so relogin
                    Log.d(TAG, "sessionNOTValid, relogin");
                    mFacebook.**authorize**(this, PERMS, new LoginDialogListener());
            }
    }

    public boolean isSession() {
            sharedPrefs = PreferenceManager.getDefaultSharedPreferences(mContext);
            String access_token = sharedPrefs.getString("access_token", "x");
            Long expires = sharedPrefs.getLong("access_expires", -1);
            Log.d(TAG, access_token);

            if (access_token != null && expires != -1) {
                    mFacebook.setAccessToken(access_token);
                    mFacebook.setAccessExpires(expires);
            }
            return mFacebook.isSessionValid();
    }

    private class **LoginDialogListener** implements DialogListener {

            @Override
            public void **onComplete(Bundle values)** {
                    Log.d(TAG, "LoginONComplete");
                    String token = mFacebook.getAccessToken();
                    long token_expires = mFacebook.getAccessExpires();
                    Log.d(TAG, "AccessToken: " + token);
                    Log.d(TAG, "AccessExpires: " + token_expires);
                    sharedPrefs = PreferenceManager
                                    .getDefaultSharedPreferences(mContext);
                    sharedPrefs.edit().putLong("access_expires", token_expires)
                                    .commit();
                    sharedPrefs.edit().putString("access_token", token).commit();
                    mAsyncRunner.request("me", new IDRequestListener());
            }

            @Override
            public void onFacebookError(FacebookError e) {
                    Log.d(TAG, "FacebookError: " + e.getMessage());
            }

            @Override
            public void onError(DialogError e) {
                    Log.d(TAG, "Error: " + e.getMessage());
            }

            @Override
            public void onCancel() {
                    Log.d(TAG, "OnCancel");
            }
    }

    private class IDRequestListener implements RequestLis开发者_运维技巧tener {

            @Override
            public void onComplete(String response, Object state) {
                    try {
                            Log.d(TAG, "IDRequestONComplete";);
                            Log.d(TAG, "Response: " + response.toString());
                            JSONObject json = Util.parseJson(response);

                            final String id = json.getString("id");
                            final String name = json.getString("name");
                            FBConnectionActivity.this.runOnUiThread(new Runnable() {
                                    public void run() {
                                            username.setText("Welcome: " + name+"\n ID: "+id);
                                            pb.setVisibility(ProgressBar.GONE);

                                    }
                            });
                    } catch (JSONException e) {
                            Log.d(TAG, "JSONException: " + e.getMessage());
                    } catch (FacebookError e) {
                            Log.d(TAG, "FacebookError: " + e.getMessage());
                    }
            }

            @Override
            public void onIOException(IOException e, Object state) {
                    Log.d(TAG, "IOException: " + e.getMessage());
            }

            @Override
            public void onFileNotFoundException(FileNotFoundException e,
                            Object state) {
                    Log.d(TAG, "FileNotFoundException: " + e.getMessage());
            }

            @Override
            public void onMalformedURLException(MalformedURLException e,
                            Object state) {
                    Log.d(TAG, "MalformedURLException: " + e.getMessage());
            }

            @Override
            public void onFacebookError(FacebookError e, Object state) {
                    Log.d(TAG, "FacebookError: " + e.getMessage());
            }

    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
            mFacebook.authorizeCallback(requestCode, resultCode, data);
    }
}

Ctrl-Shift-o and everything should work(it does for me atleast)

Imports needed for first activity:

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ProgressBar;
import android.widget.TextView;

And for the second :

import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.MalformedURLException;

import org.json.JSONException;
import org.json.JSONObject;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.util.Log;
import android.widget.ProgressBar;
import android.widget.TextView;

import com.facebook.android.AsyncFacebookRunner;
import com.facebook.android.AsyncFacebookRunner.RequestListener;
import com.facebook.android.DialogError;
import com.facebook.android.Facebook;
import com.facebook.android.Facebook.DialogListener;
import com.facebook.android.FacebookError;
import com.facebook.android.Util;