无法添加窗口——令牌 android.os.BinderProxy 无效；您的活动正在运行吗? [英] Unable to add window -- token android.os.BinderProxy is not valid; is your activity running?

问题描述

我尝试通过 Facebook API 连接到 Facebook，我遵循以下示例:https://github.com/facebook/facebook-android-sdk/tree/master/examples/simple

I try to connect to Facebook throught Facebook API, I follow this example: https://github.com/facebook/facebook-android-sdk/tree/master/examples/simple

一切正常，但是当我尝试编辑一些代码时，我的意思是我想在登录成功后显示对话框帖子消息，如下所示:

Everything is ok, but when I try to edit some code, I mean I want to display the dialog post message after the login is successful like this:

public void onAuthSucceed() {
        mText.setText("You have logged in! ");   
        //This is the code to call the post message dialog.                     
        mFacebook.dialog(Example.this, "feed",new SampleDialogListener());   
    }

我在 logcat 中收到此错误:

I receive this error in the logcat:

03-02 13:32:08.629: E/AndroidRuntime(14991): android.view.WindowManager$BadTokenException: Unable to add window -- token android.os.BinderProxy@405180f8 is not valid; is your activity running?
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.view.ViewRoot.setView(ViewRoot.java:532)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:177)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.view.Window$LocalWindowManager.addView(Window.java:424)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.app.Dialog.show(Dialog.java:241)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at com.facebook.android.Facebook.dialog(Facebook.java:780)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at com.facebook.android.Facebook.dialog(Facebook.java:737)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at com.facebook.android.Example$SampleAuthListener.onAuthSucceed(Example.java:113)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at com.facebook.android.SessionEvents.onLoginSuccess(SessionEvents.java:78)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at com.facebook.android.Example$LoginDialogListener.onComplete(Example.java:88)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at com.facebook.android.Facebook$1.onComplete(Facebook.java:320)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at com.facebook.android.FbDialog$FbWebViewClient.shouldOverrideUrlLoading(FbDialog.java:144)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.webkit.CallbackProxy.uiOverrideUrlLoading(CallbackProxy.java:218)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:337)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.os.Handler.dispatchMessage(Handler.java:99)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.os.Looper.loop(Looper.java:130)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at android.app.ActivityThread.main(ActivityThread.java:3687)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at java.lang.reflect.Method.invokeNative(Native Method)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at java.lang.reflect.Method.invoke(Method.java:507)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
03-02 13:32:08.629: E/AndroidRuntime(14991):    at dalvik.system.NativeStart.main(Native Method)

有什么想法吗?

推荐答案

当您为不再存在的上下文显示对话框时，可能会发生这种情况.一种常见情况 - 如果显示对话框"操作是在异步操作之后，并且在该操作期间原始活动(即对话框的父级)被销毁.有关详细说明，请参阅此博客文章和评论:

This can occur when you are showing the dialog for a context that no longer exists. A common case - if the 'show dialog' operation is after an asynchronous operation, and during that operation the original activity (that is to be the parent of your dialog) is destroyed. For a good description, see this blog post and comments:

http://dimitar.me/android-displaying-dialogs-from-背景线程/

从上面的堆栈跟踪来看，facebook 库似乎异步剥离了 auth 操作，并且您有一个处理程序 - 回调机制(在侦听器上调用 onComplete)可以轻松创建这种情况.

From the stack trace above, it appears that the facebook library spins off the auth operation asynchronously, and you have a Handler - Callback mechanism (onComplete called on a listener) that could easily create this scenario.

当我在我的应用中看到这个报告时，它非常罕见并且与博客文章中的体验相符.活动出了点问题/它在 AsyncTask 的工作期间被破坏了.我不知道您的修改如何每次都会导致这种情况，但也许您将 Activity 作为对话框的上下文进行引用，而该对话框总是在您的代码执行时被销毁?

When I've seen this reported in my app, its pretty rare and matches the experience in the blog post. Something went wrong for the activity/it was destroyed during the work of the the AsyncTask. I don't know how your modification could result in this every time, but perhaps you are referencing an Activity as the context for the dialog that is always destroyed by the time your code executes?

此外，虽然我不确定这是否是判断您的活动是否正在运行的最佳方式，但请参阅此答案以了解这样做的一种方法:

Also, while I'm not sure if this is the best way to tell if your activity is running, see this answer for one method of doing so:

检查活动是否处于活动状态

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