創建Facebook LoginButton在對話框崩潰onActivityResult

基本上我想在由MainActivity啓動的對話框中使用LoginButton。創建Facebook LoginButton在對話框崩潰onActivityResult

EDITED LOG：

每次打開的對話框中，應用程序崩潰和onActivityResult拋出：

01-22 12:20:59.775: E/AndroidRuntime(31017): FATAL EXCEPTION: main 
01-22 12:20:59.775: E/AndroidRuntime(31017): Process: net.lagsoft.trivioliv2, PID: 31017 
01-22 12:20:59.775: E/AndroidRuntime(31017): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=998, result=0, data=null} to activity {net.lagsoft.trivioliv2/net.lagsoft.trivioliv2.MainScreen}: java.lang.ClassCastException: android.view.ContextThemeWrapper cannot be cast to android.app.Activity 
01-22 12:20:59.775: E/AndroidRuntime(31017): at android.app.ActivityThread.deliverResults(ActivityThread.java:3365) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3408) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at android.app.ActivityThread.access$1300(ActivityThread.java:135) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at android.os.Handler.dispatchMessage(Handler.java:102) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at android.os.Looper.loop(Looper.java:136) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at android.app.ActivityThread.main(ActivityThread.java:5017) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at java.lang.reflect.Method.invokeNative(Native Method) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at java.lang.reflect.Method.invoke(Method.java:515) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at dalvik.system.NativeStart.main(Native Method) 
01-22 12:20:59.775: E/AndroidRuntime(31017): Caused by: java.lang.ClassCastException: android.view.ContextThemeWrapper cannot be cast to android.app.Activity 
01-22 12:20:59.775: E/AndroidRuntime(31017): at com.facebook.widget.LoginButton.onActivityResult(LoginButton.java:440) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at net.lagsoft.trivioliv2.MainScreen.onActivityResult(MainScreen.java:1651) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at android.app.Activity.dispatchActivityResult(Activity.java:5423) 
01-22 12:20:59.775: E/AndroidRuntime(31017): at android.app.ActivityThread.deliverResults(ActivityThread.java:3361) 
01-22 12:20:59.775: E/AndroidRuntime(31017): ... 11 more

onActivityResult（）：

@Override 
     protected void onActivityResult(int requestCode, int resultCode,Intent data) { 
      super.onActivityResult(requestCode, resultCode, data); 
      Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data); 
     }

代碼對話框：

Dialog dialog = new Dialog(MainScreen.this); 
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);     dialog.setContentView(R.layout.dialog_options_menu);     dialog.setCancelable(false); 
dialog.show(); 
dialog.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));   dialog.getWindow().setGravity(Gravity.TOP); 
LoginButton lButton =(LoginButton)dialog.findViewById(R.id.activity_login_facebook_btn_login);

它就好像在Facebook回調中的活動結果返回損壞或空白，因爲它在對話框中。（LoginButton從活動開始）。任何想法如何解決這個問題？

來源

2014-01-22 SuppressWarnings

變化onActivityResult()喜歡這個

@Override 
public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    Session.getActiveSession().onActivityResult(this, requestCode, resultCode, data); 
}

來源

2014-01-22 10:55:01 NagarjunaReddy

對不起，已經和仍然失敗，編輯。 – SuppressWarnings

Session.getActiveSession()回報null - 這是唯一的辦法了NPE在onActivityResult()。

問題中沒有足夠的上下文來說明爲什麼它返回null。

來源

2014-01-22 11:00:40 laalto

Ok如果Session！= null，那麼它將返回ContextThemeWrapper不能轉換爲Activity。用新日誌編輯主文章。 – SuppressWarnings

創建Facebook LoginButton在對話框崩潰onActivityResult

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