如何添加计时器以显示几秒钟的设计布局并返回android studio

<TextView
    android:id="@+id/timerTextView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="0"
    android:textSize="24sp"/>

private int seconds = 0;
private Handler handler = new Handler();

private Runnable timerRunnable = new Runnable() {
    @Override
    public void run() {
        seconds++;
        TextView timerTextView = findViewById(R.id.timerTextView);
        timerTextView.setText(String.valueOf(seconds));
        handler.postDelayed(this, 1000); // 每隔1秒更新一次
    }
};

handler.postDelayed(timerRunnable, 1000); // 延迟1秒启动计时器

handler.removeCallbacks(timerRunnable); // 停止计时器