当Activity已经Finish了，还弹对话框的话，就会报这个错

·1Caused by: android.view.WindowManager$BadTokenException:Unable to add window -- token android.os.BinderProxy@42b22048 is not valid; isyour activity running?

·2atandroid.view.ViewRootImpl.setView(ViewRootImpl.java:541)

·3atandroid.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:259)

·4atandroid.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)

·5at android.app.Dialog.show(Dialog.java:286)

·6atcom.mama100.android.member.wxapi.WXPayHelper.showWXPayFailedDialog(WXPayHelper.java:88)

·7atcom.mama100.android.member.activities.mothershop.SubmitOrderActivity$3.onCheckStatusResponse(SubmitOrderActivity.java:941)

·8atcom.mama100.android.member.wxapi.CheckWXPayStatus$TaskCheckWXPayStatus.handleResponse(CheckWXPayStatus.java:55)

·9atcom.mama100.android.member.activities.AsyncReqTask.onPostExecute(AsyncReqTask.java:50)

·10at com.mama100.android.member.activities.AsyncReqTask.onPostExecute(AsyncReqTask.java:1)

解决办法 ：

在dialog初始化前先加判断

if (mContext.isFinishing()) {

return;

}