使用Facebook的新Android SDK 3.0(几天前发布),身份验证过程发生了变化。
那么你如何申请阅读权限,例如“friends_hometown”?
以下代码是我尝试的方式 - 但我很确定这不是你应该这样做的方式:
版本1:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Session.openActiveSession(this, true, new Session.StatusCallback() { // start Facebook login
@Override
public void call(Session session, SessionState state, Exception exception) { // callback for session state changes
if (session.isOpened()) {
List<String> permissions = new ArrayList<String>();
permissions.add("friends_hometown");
session.requestNewReadPermissions(new Session.NewPermissionsRequest(FBImport.this, permissions));
Request.executeGraphPathRequestAsync(session, "me/friends/?access_token="+session.getAccessToken()+"&fields=id,name,hometown", new Request.Callback() {
...
});
}
}
});
}
版本2:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Session currentSession = Session.getActiveSession();
if (currentSession == null || currentSession.getState().isClosed()) {
Session session = Session.openActiveSession(this, true, fbStatusCallback); // PROBLEM: NO PERMISSIONS YET BUT CALLBACK IS EXECUTED ON OPEN
currentSession = session;
}
if (currentSession != null && !currentSession.isOpened()) {
OpenRequest openRequest = new OpenRequest(this).setCallback(fbStatusCallback); // HERE IT IS OKAY TO EXECUTE THE CALLBACK BECAUSE WE'VE GOT THE PERMISSIONS
if (openRequest != null) {
openRequest.setDefaultAudience(SessionDefaultAudience.FRIENDS);
openRequest.setPermissions(Arrays.asList("friends_hometown"));
openRequest.setLoginBehavior(SessionLoginBehavior.SSO_WITH_FALLBACK);
currentSession.openForRead(openRequest);
}
}
}
我正在做的是在会话打开后立即请求权限 - 但此时代码已经启动了一个Graph API请求,因此权限请求来得很晚......
您无法在初始化会话的同时申请权限吗?
答案 0 :(得分:67)
我能够让它发挥作用。它是对第2版示例的修改。 link杰西提供的帮助也很大。
以下是我在验证用户时遇到的代码:
private void signInWithFacebook() {
mSessionTracker = new SessionTracker(getBaseContext(), new StatusCallback() {
@Override
public void call(Session session, SessionState state, Exception exception) {
}
}, null, false);
String applicationId = Utility.getMetadataApplicationId(getBaseContext());
mCurrentSession = mSessionTracker.getSession();
if (mCurrentSession == null || mCurrentSession.getState().isClosed()) {
mSessionTracker.setSession(null);
Session session = new Session.Builder(getBaseContext()).setApplicationId(applicationId).build();
Session.setActiveSession(session);
mCurrentSession = session;
}
if (!mCurrentSession.isOpened()) {
Session.OpenRequest openRequest = null;
openRequest = new Session.OpenRequest(SignUpChoices.this);
if (openRequest != null) {
openRequest.setDefaultAudience(SessionDefaultAudience.FRIENDS);
openRequest.setPermissions(Arrays.asList("user_birthday", "email", "user_location"));
openRequest.setLoginBehavior(SessionLoginBehavior.SSO_WITH_FALLBACK);
mCurrentSession.openForRead(openRequest);
}
}else {
Request.executeMeRequestAsync(mCurrentSession, new Request.GraphUserCallback() {
@Override
public void onCompleted(GraphUser user, Response response) {
Log.w("myConsultant", user.getId() + " " + user.getName() + " " + user.getInnerJSONObject());
}
});
}
}
为了测试我从Facebook认证返回后通过以下代码运行:
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data);
if (mCurrentSession.isOpened()) {
Request.executeMeRequestAsync(mCurrentSession, new Request.GraphUserCallback() {
// callback after Graph API response with user object
@Override
public void onCompleted(GraphUser user, Response response) {
Log.w("myConsultant", user.getId() + " " + user.getName() + " " + user.getInnerJSONObject());
}
});
}
}
答案 1 :(得分:55)
我通过实现自己的Session.openActiveSession()
方法解决了同样的问题:
private static Session openActiveSession(Activity activity, boolean allowLoginUI, StatusCallback callback, List<String> permissions) {
OpenRequest openRequest = new OpenRequest(activity).setPermissions(permissions).setCallback(callback);
Session session = new Builder(activity).build();
if (SessionState.CREATED_TOKEN_LOADED.equals(session.getState()) || allowLoginUI) {
Session.setActiveSession(session);
session.openForRead(openRequest);
return session;
}
return null;
}
答案 2 :(得分:16)
我建议您在步骤3中专门阅读我们的登录教程here。使用我们提供的登录按钮是最方便的方法,(参见authButton.setReadPermissions()
)
编辑:
在不使用loginbutton的情况下设置权限比较棘手,因为您必须手动完成所有会话管理。深入研究登录按钮的源代码,这line of code可能就是您所需要的。看起来您需要创建自己的Session.OpenRequest
并设置权限,受众群体和登录行为等属性,然后获取当前会话并在openForRead()
上调用Session.OpenRequest
。< / p>
答案 3 :(得分:4)
尽管几个月前第一个问题被问到并且有可接受的答案,但还有另一个更优雅的解决方案,用于在身份验证时请求用户获得更多权限。 另外,最近发布了Facebook SDK 3.5,刷新这个帖子会很好:)
因此,这个开源库提供了优雅的解决方案:android-simple-facebook
只需在Activity
课程中添加下一行:
定义并选择您需要的权限,例如friends_hometown
:
Permissions[] permissions = new Permissions[]
{
Permissions.FRIENDS_HOMETOWN,
Permissions.FRIENDS_PHOTOS,
Permissions.PUBLISH_ACTION
};
这里有权限的好处是你不需要分开READ和PUBLISH权限。你只需要提到你需要的东西,图书馆就会照顾好其余部分。
通过app_id
,namespace
和permissions
来构建和定义配置:
SimpleFacebookConfiguration configuration = new SimpleFacebookConfiguration.Builder()
.setAppId("625994234086470")
.setNamespace("sromkuapp")
.setPermissions(permissions)
.build();
并创建SimpleFacebook
实例并设置此配置:
SimpleFacebook simpleFacebook = SimpleFacebook.getInstance(Activity);
simpleFacebook.setConfiguration(configuration);
现在,您可以运行以下方法:登录,发布Feed /故事,邀请,...
mSimpleFacebook.login(OnLoginListener);
mSimpleFacebook.logout(OnLogoutListener);
有关更多示例和用法,请查看此页面:https://github.com/sromku/android-simple-facebook#actions-examples