简单例子
package com.peidw; import android.app.Activity; import android.os.Bundle; import android.os.Handler; import android.os.HandlerThread; import android.os.Message; import android.text.Html; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.widget.TextView; /** * * @author peidw * */ public class HandlerThreadActivity extends Activity { private TextView mt; private Handler mcHandler=new Handler(){ @Override public void handleMessage(Message msg) { mt.setText(Html.fromHtml((String)msg.obj)); mcHandler.post( update_thread); } }; private boolean isUpdateInfo=true; //与UI线程管理的handler private static final int MSG_UPDATE_INFO = 0x110; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_handler_thread); //创建后台线程 mt = (TextView) findViewById(R.id.id_textview); mcHandler.post(update_thread); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.handler_thread, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); } private void initBack(){ Log.i ("AA----->","-----------------initBack"); //ht=new HandlerThread("check-message-coming"); //ht.start(); Log.i ("AA----->","-----------------isUpdateInfo="+isUpdateInfo); } Runnable update_thread = new Runnable() { int i=0; public void run(){ Message msg = mcHandler.obtainMessage(); try { Thread.sleep(2000); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } String result = "实时更新中，当前大盘指数：<font color='red'>%d</font>"; result = String.format(result, (int) (Math.random() * 3000 + 1000)); msg.obj=result; mcHandler.sendMessage(msg); if(i>100){ mcHandler.removeCallbacks(update_thread); } } }; }layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context="com.peidw.HandlerThreadActivity" > <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:layout_alignParentBottom="true" android:layout_alignParentLeft="true" android:layout_alignParentRight="true" android:layout_alignParentTop="true" android:orientation="vertical" > <TextView android:id="@+id/id_textview" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginLeft="0dp" android:layout_marginTop="0dp" android:text="正在加载大盘指数..." /> </LinearLayout> </RelativeLayout>
