每秒更新TextView [英] Update TextView Every Second

问题描述

我已经环顾四周，从目前为止所尝试的东西似乎没有任何效果...

I've looked around and nothing seems to be working from what I've tried so far...

    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.deskclock);

    TextView tvTime = (TextView) findViewById(R.id.tvTime);
    TextView tvDate = (TextView) findViewById(R.id.tvDate);

    java.util.Date noteTS = Calendar.getInstance().getTime();

    String time = "hh:mm"; // 12:00
    tvTime.setText(DateFormat.format(time, noteTS));

    String date = "dd MMMMM yyyy"; // 01 January 2013
    tvDate.setText(DateFormat.format(date, noteTS));

我基本上希望setText方法每秒钟更新或刷新一次，所以我的时钟实际上是它应该做。我看到像处理程序和运行的方法，没有任何工作，所以任何帮助这将是非常感谢。 ：）

I basically want the setText methods to update or refresh every second or so, so my clock actually works like it should do. I've seen methods like handlers and run and nothing worked so any help with this would be great thanks. :)

推荐答案

在您的onCreate（）方法中添加以下代码：

Add following code in your onCreate() method:

Thread t = new Thread() {

  @Override
  public void run() {
    try {
      while (!isInterrupted()) {
        Thread.sleep(1000);
        runOnUiThread(new Runnable() {
          @Override
          public void run() {
            // update TextView here!
          }
        });
      }
    } catch (InterruptedException e) {
    }
  }
};

t.start();

此代码启动一个每轮休眠1000毫秒的线程。

This code starts an thread which sleeps 1000 milliseconds every round.

这篇关于每秒更新TextView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！