动态获取当前时间显示

又学到个新技能,马上get√

先获取当前时间并显示:

private TextView tv1;

private void Load() {
SimpleDateFormat format = new SimpleDateFormat("HH:mm");
		String date = format.format(new Date());
		tv1.setText(date);}

private void init() {
		// TODO Auto-generated method stub
		tv1 = (TextView) findViewById(R.id.tv1);
	}

	private BroadcastReceiver netReceiver = new BroadcastReceiver() {

		@Override
		public void onReceive(Context context, Intent intent) {
			// TODO Auto-generated method stub
			String action = intent.getAction();
			if (action == null) {
				return;

			}
			if (action.equals(Intent.ACTION_TIME_TICK)) {
				SimpleDateFormat format = new SimpleDateFormat("HH:mm");
				String date = format.format(new Date());
				tv1.setText(date);
			}
		}

	};

protected void onDestroy() {
		super.onDestroy();
		unregisterReceiver(netReceiver);
	};

现在得到的当前时间是不会随着系统时间变化的,须在OnCreate里面加入如下代码:

IntentFilter filter = new IntentFilter();
		filter.addAction(Intent.ACTION_TIME_TICK);
		registerReceiver(netReceiver, filter);