postDelayed总结

postDelayed对象是在主线程调用的：可以直接改ui
所以：不能在postDelayed中获取网络数据，即使是在service中
private Handler m_Timer = new Handler();
private Runnable r = new Runnable() {
        public void run() {
            title_text.setText("自选"+(a++));
            for(int i=0;i<m_Observer.size();++i) {
                m_Observer.get(i).TimerUpdate(0);
            }
            m_Timer.postDelayed(r, 1000);
        }
    };
public void Stop(){
    m_Timer.removeCallbacks(r);
}
public void Start(){
m_Timer.postDelayed(r, 1000);
}

postDelayed调用子线程：
private Runnable newThread =new Runnable() {
    @Override
    public void run() {
        if (mainActivity.queue.size() > 0) {
            String word = null;
            if ((word = mainActivity.queue.poll()) != null) {
                mainActivity.avicTts.speak(word);
            }
        }
    }
};

private Runnable speakRun = new Runnable() {
    public void run() {
        new Thread(newThread).start();
        mHandler.postDelayed(speakRun, 500);
    }
};

文章来源: blog.csdn.net，作者：网奇，版权归原作者所有，如需转载，请联系作者。

原文链接：blog.csdn.net/jacke121/article/details/54573476