activity.runOnUiThread()内的run()方法没有被执行
activity.runOnUiThread(new Runnable() { public void run() { Toast.makeText(context, toast, Toast.LENGTH_SHORT).show(); } });
run()方法没有执行,查找原因,在原来,掉用runOnUiThread的activity,一定得是Activity对象,so,在使用之前,需要增加判读:
if(activity instanceOf Activity){ }
参考链接
原文:
It doesn't always work, you have to be sure that what you are casting is
effectively an Activity or you'll have a ClassCastException. To do that you can do
"if(context instanceOf Activity){ // proceed to cast }"