Unable to add window -- token android.os.BinderProxy

The problem is that the dialog need to have the "base" context of your activity, not necessarily the one you're launching it from.

然后我在弹dialog之前加上了这段代码

[java] view plain copy

1. Activity activity =RActivity.this;  
2.                                             while (activity.getParent() != null) {  
3.                                                 activity = activity.getParent();  
4.                                             }  
5.                                             new AlertDialog.Builder(activity)  
6.                                                     .setTitle(  
7.                                                             getString(R.string.atitle))  
8.                                                     .setMessage(errMessage)  
9.                                                     .setPositiveButton(  
10.                                                             getString(R.string.ok),  
11.                                                             null).show();  
12.                                               
13.                                         }  
14.                                     });  
15.