Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
MicrosoftInternetExplorer4
在
Android
平台中多线程应用很广泛，在
UI
更新、游戏开发和耗时处理（网络通信等）等方面都需要多线程。
Android
线程涉及到的技术有：
Handler，
Message，MessageQueue，Looper，HandlerThread。
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
MicrosoftInternetExplorer4
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman","serif";}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btnEnd = (Button) findViewById(R.id.btnEnd);
btnEnd.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
isRunning = false;
}
});
labelTimer = (TextView) findViewById(R.id.labelTimer);
HandlerThread thread = new
HandlerThread("MyHandlerThread");
thread.start();
handler = new Handler(thread.getLooper());
Runnable r = new Runnable() {
public void run() {
if (isRunning) {
labelTimer.setText("
逝去了
" +timer + "
秒
");
timer++;
handler.postDelayed(this,
1000);
}
}
};
handler.postDelayed(r, 1000);
}
}
Normal
0
7.8 磅
0
2
false
false
false
EN-US
ZH-CN
X-NONE
MicrosoftInternetExplorer4
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:普通表格;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-qformat:yes;
mso-style-parent:"";
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman","serif";}
用
new
HandlerThread("MyHandlerThread")
创建
HandlerThread
线程，通过
thread.start()
方法启动该线程。
HandlerThread
的
getLooper()
方法可以获得与
HandlerThread
线程对象关联的
Looper
对象。再用
Looper
对象构建
new Handler(looper)
。