可能重复：   安卓：吐司在一个线程

我打电话从工作线程创建一个辅助类功能，其中我想提出一个敬酒，但我得到以下异常

I am calling a helper class function from a worker thread, wherein I am trying to raise a toast but I am getting following exception

Android Can't create handler inside thread that has not called Looper.prepare

我们不能提高从非UI线程举杯？

Can't we raise a toast from a Non UI thread ?

推荐答案

您可以使用 runOnUiThread（）例如

this.runOnUiThread（show_toast）;

和 show_toast

private Runnable show_toast = new Runnable()
{
    public void run()
    {
        Toast.makeText(Autoamtion.this, "My Toast message", Toast.LENGTH_SHORT)
                    .show();
    }
};