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);