整理:多线程+计时器(TimerTask、Timer、Handler、Message、Thread、Runnable、HandlerThread)
newThread(newRunnable(){@Overridepublicvoidrun(){try{Thread.sleep(2000);runOnUiThread(newRunnable(){@Overridepublicvoidrun(){Intentintent=newIntent(xxx.this,yyy.class);startActivity(intent);finish();}