android - 从 SharedPreference 使用 AccessToken - android facebook sdk 3

Question

我正在尝试将 Facebook AccessToken 保存在 SheredPreference 中，稍后使用该 token 登录，但是当我这样做时应用程序崩溃了。

package com.fit.android;

import java.sql.Date;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import com.facebook.AccessToken;
import com.facebook.AccessTokenSource;
import com.facebook.Request;
import com.facebook.Response;
import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.model.GraphUser;


public class LoginActivity extends Activity implements OnClickListener {

    Button login;
    Button logout;
    Button loginToken;

    SharedPreferences sp;
    AccessToken token;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login_activity);

        login = (Button) findViewById(R.id.login);
        logout = (Button) findViewById(R.id.logout);

        login.setOnClickListener(this);
        logout.setOnClickListener(this);

        loginToken = (Button) findViewById(R.id.token);
        loginToken.setOnClickListener(this);

        sp = getPreferences(MODE_PRIVATE);

        String access_token = sp.getString("access_token", null);

        String expires = sp.getString("access_expires", null);


        if (access_token != null && expires != null) {
            token.createFromExistingAccessToken(access_token, Date.valueOf(expires), null, 
            AccessTokenSource.TEST_USER, null);
        }
    }


    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
    }


    @Override
    public void onClick(View v) {
    
        switch (v.getId()) {
            case R.id.login:
                if (token != null) {
                    Session.openActiveSessionWithAccessToken(this, token, new Session.StatusCallback() {
                        @Override
                        public void call(final Session session, SessionState state, Exception exception) {
                            if (session.isOpened()) {

                                Request.executeMeRequestAsync(session, new Request.GraphUserCallback() {
                                    @Override
                                    public void onCompleted(GraphUser user, Response response) {
                                        if (user != null) {
                                            TextView welcome = (TextView) findViewById(R.id.textView1);
                                            welcome.setText("Hello " + user.getName());
                                        }
                                    }
                                });
                            }
                        }
                    });
                } else {


                    Session.openActiveSession(this, true, new Session.StatusCallback() {
                        @Override
                        public void call(final Session session, SessionState state, Exception exception) {

                            if (session.isOpened()) {
                                Request.executeMeRequestAsync(session, new Request.GraphUserCallback() {
                                    @Override
                                    public void onCompleted(GraphUser user, Response response) {
                                        if (user != null) {
                                            TextView welcome = (TextView) findViewById(R.id.textView1);
                                            welcome.setText("Hello " + user.getName());

                                            Editor editor = sp.edit();
                                            editor.putString("access_token", session.getAccessToken());
                                            editor.putString("access_expires", session.getExpirationDate().toString());
                                            editor.commit();
                                        }
                                    }
                                });
                            }
                        }
                    });
                }

                break;

            case R.id.logout:
                Session.getActiveSession().closeAndClearTokenInformation();
                break;
        }
    }
}

日志:

12-29 19:16:32.316: E/AndroidRuntime(1118): FATAL EXCEPTION: main
12-29 19:16:32.316: E/AndroidRuntime(1118): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.fit.android/com.fit.android.Login_activity}: java.lang.IllegalArgumentException
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.os.Handler.dispatchMessage(Handler.java:99)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.os.Looper.loop(Looper.java:137)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.app.ActivityThread.main(ActivityThread.java:5039)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at java.lang.reflect.Method.invokeNative(Native Method)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at java.lang.reflect.Method.invoke(Method.java:511)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at dalvik.system.NativeStart.main(Native Method)
12-29 19:16:32.316: E/AndroidRuntime(1118): Caused by: java.lang.IllegalArgumentException
12-29 19:16:32.316: E/AndroidRuntime(1118):     at java.sql.Date.valueOf(Date.java:226)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at com.fit.android.Login_activity.onCreate(Login_activity.java:53)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.app.Activity.performCreate(Activity.java:5104)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
12-29 19:16:32.316: E/AndroidRuntime(1118):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
12-29 19:16:32.316: E/AndroidRuntime(1118):     ... 11 more

Answer 1

解决方法如下:

1- 以这种方式解析日期:

 Date date = null;
    try {
        date = new SimpleDateFormat("MMMM d, yyyy", Locale.ENGLISH).parse(expires);
    } catch (ParseException e) {
        e.printStackTrace();
    } 

2-初始化访问 token :

 if (access_token != null  && expires != null){
      token = AccessToken.createFromExistingAccessToken(access_token, date, null, AccessTokenSource.TEST_USER, null);
 }