每秒更新 TextView [英] Update TextView Every Second

问题描述

我环顾四周，到目前为止我所尝试的似乎没有任何效果......

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 方法每秒更新或刷新一次，所以我的时钟实际上像它应该做的那样工作.我已经看到处理程序和运行之类的方法，但没有任何效果，因此对此有任何帮助将非常感谢.:)

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 thread = new Thread() {

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

thread.start();

此代码启动一个线程，每轮休眠 1000 毫秒.

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！