嘿，我正在使用此代码获取用户配置文件按钮点击android但这段代码无效，因为Session.getActiveSession()返回null ..
点击按钮
btnFbLogin1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Toast.makeText(getApplicationContext(), "Name: ", Toast.LENGTH_LONG).show();
Session session = Session.getActiveSession();
if(session==null){
// try to restore from cache
session = Session.openActiveSessionFromCache(getApplicationContext());
//make
}
if(session !=null)
{
// session.open(, callback);
makeMeRequest(session);
Toast.makeText(getApplicationContext(), "ander", Toast.LENGTH_LONG).show();
}
}
});
方式
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 com.facebook.Request.GraphUserCallback() {
@Override
public void onCompleted(GraphUser user, Response response) {
// TODO Auto-generated method stub
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());
// Set the Textview's text to the user's name.
//userNameView.setText(user.getName());
Toast.makeText(getApplicationContext(), "Name: " + user.getName() + "\nEmail: " + user.getId(), Toast.LENGTH_LONG).show();
//Toast.makeText(getApplicationContext(), user.getName(), duration);
}
}
if (response.getError() != null) {
// Handle errors, will do so later.
}
}
});
request.executeAsync();
}
}
登录代码..
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);
}
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();
}
@Override
public void onError(DialogError error) {
// Function to handle error
}
@Override
public void onFacebookError(FacebookError fberror) {
// Function to handle Facebook errors
}
});
}
}
我不知道为什么会话为空。首先我登录facebook然后点击此按钮获取个人资料请帮助我。