Android Facebook sdk+；facebook.isSessionValid（）不工作
我已经检查了我的散列键。我做的所有事情都是按照Facebook所说的。现在我的Facebook.isSessionValid（）不工作了，请在下面找到我使用的代码Android Facebook sdk+；facebook.isSessionValid（）不工作,android,facebook-sdk-3.0,Android,Facebook Sdk 3.0,我已经检查了我的散列键。我做的所有事情都是按照Facebook所说的。现在我的Facebook.isSessionValid（）不工作了，请在下面找到我使用的代码 package com.maintab; import java.io.IOException; import java.net.MalformedURLException; import org.apache.http.auth.MalformedChallengeException; import org.json.JSONObj
package com.maintab;
import java.io.IOException;
import java.net.MalformedURLException;
import org.apache.http.auth.MalformedChallengeException;
import org.json.JSONObject;
import com.example.tesfragement.*;
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;
import android.os.Bundle;
import android.app.Fragment;
import android.service.textservice.SpellCheckerService.Session;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.Toast;
public class Login extends Fragment {
View view;
ImageView loginbuttton,logoutbutton;
String app_id="*************";
Facebook fb=new Facebook(app_id);
public Login() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
view= inflater.inflate(R.layout.login, container, false);
loginbuttton=(ImageView) view.findViewById(R.id.loinbutton);
loginbuttton.setOnClickListener(btnClick);
//here change the image according to session
logoutbutton=(ImageView)view.findViewById(R.id.greenbutton);
updateButtonImage();
//here facebook cording will go
//facebook fb=new Login()
return view;
}
private void updateButtonImage()
{
if(fb.isSessionValid())
{
loginbuttton.setImageResource(R.drawable.log_out);
}
else
loginbuttton.setImageResource(R.drawable.login_with_facebook);
}
ImageView.OnClickListener btnClick=new ImageView.OnClickListener()
{
@SuppressWarnings("deprecation")
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
// my code begins here
if(fb.isSessionValid())
{
//button close our session -log out of facebook
Toast.makeText(getActivity(), "Session is valid", Toast.LENGTH_LONG);
try{
fb.logout(getActivity());
updateButtonImage();
}
catch(MalformedURLException e)
{
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
else
{
//login to facebook
fb.authorize(getActivity(),new DialogListener() {
@Override
public void onFacebookError(FacebookError e) {
// TODO Auto-generated method stub
Toast.makeText(getActivity(), "fbError",Toast.LENGTH_LONG).show();
}
@Override
public void onError(DialogError e) {
// TODO Auto-generated method stub
Toast.makeText(getActivity(), "onError",Toast.LENGTH_LONG).show();
}
@Override
public void onComplete(Bundle values) {
// TODO Auto-generated method stub
updateButtonImage();
}
@Override
public void onCancel() {
// TODO Auto-generated method stub
Toast.makeText(getActivity(), "oncancel",Toast.LENGTH_LONG).show();
}
});
}
}
};
}
当用户第一次登录时，将令牌存储在sharepreference中，并使用该令牌跳过登录部分
LinearLayout fb = (LinearLayout) layout.findViewById(R.id.fb);
fb.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (facebook.getAccessToken() != null) {
//user is successfully logged in here,do your desire operation
} else {
loginToFacebook();
}
}
});
public void loginToFacebook() {
mPrefs = getPreferences(MODE_PRIVATE);
String access_token = mPrefs.getString("access_token", null);
long expires = mPrefs.getLong("access_expires", 0);
if (access_token != null) {
facebook.setAccessToken(access_token);
Log.d("FB Sessions", "" + facebook.isSessionValid());
}
if (expires != 0) {
facebook.setAccessExpires(expires);
}
if (!facebook.isSessionValid()) {
facebook.authorize(this,
new String[] { "email", "publish_stream" },
new DialogListener() {
@Override
public void onCancel() {
// Function to handle cancel event
}
@Override
public void onComplete(Bundle values) {
// Function to handle complete event
// Edit Preferences and update facebook acess_token
SharedPreferences.Editor editor = mPrefs.edit();
editor.putString("access_token",
facebook.getAccessToken());
editor.putLong("access_expires",
facebook.getAccessExpires());
editor.commit();
Toast.makeText(c,
"Successfully Login", Toast.LENGTH_LONG)
.show();
pwindo.dismiss();
// Making Login button invisible
}
@Override
public void onError(DialogError error) {
// Function to handle error
}
@Override
public void onFacebookError(FacebookError fberror) {
// Function to handle Facebook errors
pwindo.dismiss();
Toast.makeText(c, "Facebook Error",
Toast.LENGTH_LONG).show();
}
});
}
}
当用户第一次登录时，将令牌存储在sharepreference中，并使用该令牌跳过登录部分
LinearLayout fb = (LinearLayout) layout.findViewById(R.id.fb);
fb.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
if (facebook.getAccessToken() != null) {
//user is successfully logged in here,do your desire operation
} else {
loginToFacebook();
}
}
});
public void loginToFacebook() {
mPrefs = getPreferences(MODE_PRIVATE);
String access_token = mPrefs.getString("access_token", null);
long expires = mPrefs.getLong("access_expires", 0);
if (access_token != null) {
facebook.setAccessToken(access_token);
Log.d("FB Sessions", "" + facebook.isSessionValid());
}
if (expires != 0) {
facebook.setAccessExpires(expires);
}
if (!facebook.isSessionValid()) {
facebook.authorize(this,
new String[] { "email", "publish_stream" },
new DialogListener() {
@Override
public void onCancel() {
// Function to handle cancel event
}
@Override
public void onComplete(Bundle values) {
// Function to handle complete event
// Edit Preferences and update facebook acess_token
SharedPreferences.Editor editor = mPrefs.edit();
editor.putString("access_token",
facebook.getAccessToken());
editor.putLong("access_expires",
facebook.getAccessExpires());
editor.commit();
Toast.makeText(c,
"Successfully Login", Toast.LENGTH_LONG)
.show();
pwindo.dismiss();
// Making Login button invisible
}
@Override
public void onError(DialogError error) {
// Function to handle error
}
@Override
public void onFacebookError(FacebookError fberror) {
// Function to handle Facebook errors
pwindo.dismiss();
Toast.makeText(c, "Facebook Error",
Toast.LENGTH_LONG).show();
}
});
}
}
请解释一下mPrefs，mPrefs变量pleasemPrefs是sharePreference的一个对象，它将值存储为键值对。exp editor.putString（“访问令牌”，facebook.getAccessToken（））；这里的键是“access_token”值是facebook.getAccessToken（）您可以在应用程序中的任何位置通过传递键访问值pwindo变量是什么？您能解释一下吗？这就是为什么我要求你输入所有代码。如果你这样做，它将对所有人都有用。谢谢。pWindows是我的弹出菜单。如果你尝试我的代码，那么你可以从代码中删除该行，一旦我的帖子在facebook上更新，我就关闭弹出窗口如何从当前会话中注销？请解释mPrefs，mPrefs变量pleasemPrefs是sharePreference的对象，它将值存储为键值对。exp editor.putString（“访问令牌”，facebook.getAccessToken（））；这里的键是“access_token”值是facebook.getAccessToken（）您可以在应用程序中的任何位置通过传递键访问值pwindo变量是什么？您能解释一下吗？这就是为什么我要求你把所有的代码都放进去。如果你这样做，它将对所有人都有用。谢谢。pWindows是我的弹出菜单。如果你尝试我的代码，那么你可以从代码中删除该行，一旦我的帖子在facebook上更新，我就关闭弹出窗口如何从当前会话中注销？