【Android】HandleThread后台数据处理

来源：互联网发布：kali linux切换到root 编辑：程序博客网时间：2024/06/06 07:37
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();    }}
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