我想登录到我与Facebook的应用程序，但我得到下一个messege给我的logcat

  10-22 19：19：22.071：E / ActivityThread（23906）：未能找到com.facebook.katana.provider.PlatformProvider供应商信息
 

和启动不加载

我让我的哈希键like这

我的code是：

 案例R.id.btn_start_facebook：
        //回调时，会话状态变化
        //开始的Facebook登录

        Session.openActiveSession（这一点，真，新Session.StatusCallback（）{

            //回调时，会话状态变化
            @覆盖
            公共无效呼叫（会话的会话，SessionState会的状态，
                    例外的例外）{
                如果（session.isOpened（））{

                    //使请求/ ME API
                    Request.executeMeRequestAsync（会话，
                            新Request.GraphUserCallback（）{

                                //后图形API响应回调
                                //与用户对象
                                @覆盖
                                公共无效onCompleted（GraphUser用户，
                                        响应响应）{
                                    如果（用户！= NULL）{

                                        Log.d（myDebug
                                                你好+ user.getName（）
                                                        +用户ID =
                                                        + user.getId（）
                                                        +）！;

                                    } 其他 {
                                        Log.d（myDebug，用户为空）;

                                    }

                                }
                            }）;
                }
            }
        }）;
 

解决方案

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"/>