Android HandlerThread 完全解析（张鸿洋）
import android.os.Handler; import android.os.HandlerThread; import android.os.Message; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.text.Html; import android.widget.TextView; public class MainActivity extends AppCompatActivity { private TextView textView; private HandlerThread mMsgThread; private Handler mMsgHandler; private boolean isUpdateInfo; private static final int MSG_UPDATE_INFO = 0x110; private Handler mHandler = new Handler(); @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView)findViewById(R.id.textView); initBackThread(); } @Override protected void onResume() { super.onResume(); //开始查询 isUpdateInfo = true; mMsgHandler.sendEmptyMessage(MSG_UPDATE_INFO); } @Override protected void onPause() { super.onPause(); //停止查询 isUpdateInfo = false; mMsgHandler.removeMessages(MSG_UPDATE_INFO); } private void initBackThread(){ mMsgThread = new HandlerThread("check-message-coming"); mMsgThread.start(); mMsgHandler = new Handler( mMsgThread.getLooper()){ @Override public void handleMessage(Message msg){ checkForUpdate(); if ( isUpdateInfo ){ mMsgHandler.sendEmptyMessageDelayed( MSG_UPDATE_INFO, 1000); } } }; } private void checkForUpdate(){ try{ Thread.sleep(1000); mHandler.post(new Runnable() { @Override public void run() { String result = "实时更新中，指数：<font color='red'>%d</font>"; result = String.format(result, (int) (Math.random() * 3000 + 1000)); textView.setText(Html.fromHtml(result)); } }); }catch (InterruptedException e){ e.printStackTrace(); } } @Override protected void onDestroy() { super.onDestroy(); //释放资源 mMsgThread.quit(); } }