如果Facebook已经安装在设备上，Facebook为什么不注册Facebook？ [英] android : why Facebook signup not working if Facebook installed in the device already?

问题描述

O已尝试在我的应用程序中使用Facebook，这在没有安装Facebook应用程序的设备上工作正常。但是当设备上已经安装了Facebook时，无法给出会话。可以任何人帮助我这个

  public void facebookSignIn（CallbackContext callContext）{
 try {
 isFacebookLogin = true; 
 getActivity（）。runOnUiThread（new Runnable（）{
 public void run（）{
 mConnectionProgressDialog.show（）;} 
}）; 
 this.callbackContext = callContext; 
 Session.openActiveSession（this，true，new Session.StatusCallback（）{
 //当会话更改状态
 @Override 
时，回调public void call（Session session，SessionState state，异常异常）{
 Log.d（facebook，session open）; 
 if（session.isOpened（））{
 //请求/ me API 
 Request.newMeRequest（session，new Request.GraphUserCallback（）{
 //在用户对象的Graph API响应之后的回调
 @Override 
 public void onCompleted（GraphUser user，Response response）{ 
 if（user！= null）{
 String userID = user.getId（）; 
 callbackContext.success（userID）; 
 Toast.makeText（MDLIVEMain.this，user。 getName（）+是c连接。，Toast.LENGTH_LONG）.show（）; 
} else {
 // TODO：handle exception 
 callbackContext.error（MDLiveLocalizationSystem.localizedStringForKey（nat_authen_failure））; 
} 
 getActivity（）。runOnUiThread（new Runnable（）{
 public void run（）{
 mConnectionProgressDialog.dismiss（）; 
} 
} ）; 
} 
 
}）。executeAsync（）; 
} 
} 
}）; 
} catch（Exception e）{
 e.printStackTrace（）; 
 callbackContext.error（MDLiveLocalizationSystem.localizedStringForKey（nat_authen_failure））; 
 GATrackingExceptions.trackExceptions（e.getLocalizedMessage（），MDLIVEMain.this）; 
 getActivity（）。runOnUiThread（new Runnable（）{
 public void run（）{
 mConnectionProgressDialog.dismiss（）; 
} 
}）; 
} 
} 
  

这里是onactivityResult代码

  @Override 
 protected void onActivityResult（int requestCode，int responseCode，Intent intent）{
 try {
 CordovaPlugin callback = this.activityResultCallbacks; 
 if（callback！= null）{
 callback.onActivityResult（requestCode，responseCode，intent）; 
} 
 Log.d（isFacebookLogin，isFacebookLogin +）; 
 if（isFacebookLogin）{
 try {
 isFacebookLogin = false; 
 Session.getActiveSession（）。onActivityResult（this，requestCode，responseCode，intent）; 
} catch（Exception e）{
 e.printStackTrace（）; 
} 
} else {
 if（requestCode == REQUEST_CODE_RESOLVE_ERR&& responseCode == RESULT_OK）{
 mConnectionResult = null; 
 mPlusClient.connect（）; 
} 
 
 getActivity（）。runOnUiThread（new Runnable（）{
 public void run（）{
 mConnectionProgressDialog.dismiss（）; 
} 
}）; 
 
 if（requestCode == PASSCODE_RESULT_PAGE）{
 if（responseCode == RESULT_OK）{
 activityVisible = true; 
 this.callbackContext.success（intent.getExtras（）。getString（passcode_pin））; 
} else {
 this.callbackContext.success（intent.getExtras（）。getString（passcode_pin））; 
 isFromPasscodePage = true; 
} 
} 
} 
} catch（异常e）{
 e.printStackTrace（）; 
} 
} 
  

解决方案

已经回答了这种类型的（Hash for fb）问题：

Facebook登录和发布到墙首次只能运行

注意：Fb给出了无效的哈希问题bcz，因为你必须生成一个有效的哈希。

O have tried to use Facebook in my application, this works fine on device that doesn't have Facebook app installed. But this fails to give the session while there is Facebook already installed on the device. Can any one help me on this

public void facebookSignIn(CallbackContext callContext){
    try {
        isFacebookLogin = true;
        getActivity().runOnUiThread(new Runnable() {
            public void run() {
                mConnectionProgressDialog.show();               }
        });
        this.callbackContext = callContext;
        Session.openActiveSession(this, true, new Session.StatusCallback() {
            // callback when session changes state
            @Override
            public void call(Session session, SessionState state, Exception exception) {
                Log.d("facebook","session open");
                if (session.isOpened()) {
                    // make request to the /me API
                    Request.newMeRequest(session, new Request.GraphUserCallback() {
                        // callback after Graph API response with user object
                        @Override
                        public void onCompleted(GraphUser user, Response response) {
                            if (user != null) {
                                String userID = user.getId();
                                callbackContext.success(userID);
                                Toast.makeText(MDLIVEMain.this, user.getName() + " is connected.", Toast.LENGTH_LONG).show();
                            } else {
                                // TODO: handle exception
                                callbackContext.error(MDLiveLocalizationSystem.localizedStringForKey("nat_authen_failure"));
                            }
                            getActivity().runOnUiThread(new Runnable() {
                                public void run() {
                                    mConnectionProgressDialog.dismiss();
                                }
                            });
                        }

                    }).executeAsync();
                }
            }
        });
    }catch (Exception e){
        e.printStackTrace();
        callbackContext.error(MDLiveLocalizationSystem.localizedStringForKey("nat_authen_failure"));
        GATrackingExceptions.trackExceptions(e.getLocalizedMessage(), MDLIVEMain.this);
        getActivity().runOnUiThread(new Runnable() {
            public void run() {
                mConnectionProgressDialog.dismiss();
            }
        });
    }
}

Here is onactivityResult code

  @Override
protected void onActivityResult(int requestCode, int responseCode, Intent intent) {
    try {
        CordovaPlugin callback = this.activityResultCallbacks;
        if (callback != null) {
            callback.onActivityResult(requestCode, responseCode, intent);
        }
        Log.d("isFacebookLogin",isFacebookLogin+"");
        if(isFacebookLogin){
            try {
                isFacebookLogin = false;
                Session.getActiveSession().onActivityResult(this, requestCode, responseCode, intent);
            }catch (Exception e){
                e.printStackTrace();
            }
        }else {
            if (requestCode == REQUEST_CODE_RESOLVE_ERR && responseCode == RESULT_OK) {
                mConnectionResult = null;
                mPlusClient.connect();
            }

            getActivity().runOnUiThread(new Runnable() {
                public void run() {
                    mConnectionProgressDialog.dismiss();
                }
            });

            if (requestCode == PASSCODE_RESULT_PAGE) {
                if (responseCode == RESULT_OK) {
                    activityVisible = true;
                    this.callbackContext.success(intent.getExtras().getString("passcode_pin"));
                } else {
                    this.callbackContext.success(intent.getExtras().getString("passcode_pin"));
                    isFromPasscodePage = true;
                }
            }
        }
    }catch (Exception e){
        e.printStackTrace();
    }
}

解决方案

I have answered for this type of (Hash for fb) issue here :

Facebook Login and Post To Wall works for first time only

Note: Fb gives issues bcz of not valid Hash, for that you have to generate a valid hash.

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