加互联网的许可menifest您的应用程序

 ＆LT;使用-权限的Andr​​oid：名称=android.permission.INTERNET对/＆GT;
 

i want to sign in to my app with facebook, but i get next messege to my Logcat

10-22 19:19:22.071: E/ActivityThread(23906): Failed to find provider info for com.facebook.katana.provider.PlatformProvider

and launcher does not loading

I get my hash key like this

My code is:

case R.id.btn_start_facebook:
        // callback when session changes state
        // start Facebook Login

        Session.openActiveSession(this, true, new Session.StatusCallback() {

            // callback when session changes state
            @Override
            public void call(Session session, SessionState state,
                    Exception exception) {
                if (session.isOpened()) {

                    // make request to the /me API
                    Request.executeMeRequestAsync(session,
                            new Request.GraphUserCallback() {

                                // callback after Graph API response
                                // with user object
                                @Override
                                public void onCompleted(GraphUser user,
                                        Response response) {
                                    if (user != null) {

                                        Log.d("myDebug",
                                                "Hello " + user.getName()
                                                        + " user id = "
                                                        + user.getId()
                                                        + "!");

                                    } else {
                                        Log.d("myDebug", "User is null");

                                    }

                                }
                            });
                }
            }
        });

add permission of internet in menifest of your application

<uses-permission android:name="android.permission.INTERNET"/>