Android 线程给Activity发送消息（Handler Messag）

[android]代码库

	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		mTextView = (TextView) findViewById(R.id.myTextView);
		mHandler = new Handler() {
			public void handleMessage(Message msg) { /* 这里是处理信息的方法 */
				switch (msg.what) {
				case 123: /* 在这处理要TextView对象Show时间的事件 */
					mTextView.setText(mHour + " : " + mMinutes);
					break;
				}
				super.handleMessage(msg);
			}
		};
		mClockThread = new LooperThread();
		mClockThread.start();
	}

	class LooperThread extends Thread {
		public void run() {
			super.run();
			try {
				do { /* 取得系统时间 */
					long time = System.currentTimeMillis(); /* 透过Calendar对象来取得小时与分钟 */
					final Calendar mCalendar = Calendar.getInstance();
					mCalendar.setTimeInMillis(time);
					mHour = mCalendar.get(Calendar.HOUR);
					mMinutes = mCalendar.get(Calendar.MINUTE); /* 让线程休息一秒 */
					Thread.sleep(1000); /* 重要关键程序:取得时间后发出讯息给Handler */
					Message m = new Message();
					m.what = 123;
					EX04_14.this.mHandler.sendMessage(m);
				} while (EX04_14.LooperThread.interrupted() == false); /* 当系统发出中断讯息时停止本循环 */
			} catch (Exception e) {
				e.printStackTrace();
			}
		}
	}