问题
I've got a fairly simple issue I'm not sure how to resolve. I want to change the message text of a Progress Dialog while it's running and showing. An example of this would be something like a "time remaining" counter that would count down while the progress animation is spinning. I'm not sure how I would approach this because doing progressDialog.setMessage(String), even within a running thread, will not change anything in the Dialog itself. Thank you!
回答1:
You might want to check this question out.
In short: You need to create a little Runnable which you can execute on the UI thread using runOnUiThread...
来源：https://stackoverflow.com/questions/5646448/changing-progress-dialog-message-while-running