Handler、Message几种发送消息形式总结 部分代码如下:消息处理代码:[java] view plaincopyprint?private Handler handler = new Handler() { public void handleMessage(Message msg) { switch (msg.what) { case 1 : bt.setText("正在下载...... java 2023-08-28 48 点赞 0 评论 72 浏览