我正在制作自定义Facebook登录按钮，我发现关于最新的Facebook Android SDK，很少有资料（特别是工作代码示例）。我花了一整天的时间，但代码仍然无法正常工作。我想知道是否有项目示例或您的项目代码可供参考：
- Facebook登录：
- 共享会话到其他活动/片段（这样我就可以在应用程序的任何地方检查登录/注销状态）
- 发布到墙上
- 注销
这是我的代码，但它实际上返回未登录状态，即使我已经登录了
登录:
public class Login {
private final static String TAG = "FaceBookLogin";
public Context ctx;
public Session fb_session;
public Login(Context _ctx) {
ctx = _ctx;
Settings.addLoggingBehavior(LoggingBehavior.INCLUDE_ACCESS_TOKENS);
fb_session = Session.getActiveSession();
if(fb_session == null)
fb_session = Session.openActiveSessionFromCache(ctx);
}
public void checkLogin() {
printHashKey();
if (fb_session != null && fb_session.isOpened()) {
Log.i(TAG, "Facebook Login State");
} else {
if (fb_session == null)
fb_session = new Session(ctx);
Session.setActiveSession(fb_session);
ConnectToFacebook();
Log.i(TAG, "Facebook Not login State");
}
}
public void printHashKey() {
try {
PackageInfo info = ctx.getPackageManager().getPackageInfo("com.project.hkseven",
PackageManager.GET_SIGNATURES);
for (Signature signature : info.signatures) {
MessageDigest md = MessageDigest.getInstance("SHA");
md.update(signature.toByteArray());
Log.d(TAG,
Base64.encodeToString(md.digest(), Base64.DEFAULT));
}
} catch (NameNotFoundException e) {
Log.d(TAG,""+e);
} catch (NoSuchAlgorithmException e) {
Log.d(TAG,""+e);
}
}
private void ConnectToFacebook() {
Session session = Session.getActiveSession();
if(session == null)
session = Session.openActiveSessionFromCache(ctx);
if (!session.isOpened() && !session.isClosed()) {
Log.i(TAG, "ConnectToFacebook if");
OpenRequest newSession = new Session.OpenRequest((Activity) ctx);
newSession.setCallback(callback);
session.openForRead(newSession);
try {
Session.OpenRequest request = new Session.OpenRequest((Activity) ctx);
request.setPermissions(Arrays.asList("email","publish_stream","publish_actions"));
} catch (Exception e) {
Log.d(TAG,""+e);
e.printStackTrace();
}
} else {
Log.i(TAG, "ConnectToFacebook else");
Session.openActiveSession((Activity) ctx, true, callback);
}
}
private Session.StatusCallback callback = new Session.StatusCallback() {
public void call(final Session session, final SessionState state,
final Exception exception) {
Log.d(TAG,"callback" + state);
onSessionStateChange(session, state, exception);
}
};
private void onSessionStateChange(final Session session,
SessionState state, Exception exception) {
Log.i(TAG, "state change");
if (session != null && session.isOpened()) {
Log.i(TAG, "Change to Facebook Login");
}
}
}
任何形式的帮助都将不胜感激，感谢您的慷慨援助。