不能创建处理器 Can't create handler inside thread that has not called Looper.prepare()

debuglog

Android 2.3.3       Eclipse Version: 3.7.0       LogCat   
LogCat 报错信息：
02-06 15:07:52.794: WARN/dalvikvm(503): threadid=18: thread exiting with uncaught exception (group=0x40015560)02-06 15:07:52.815: ERROR/AndroidRuntime(503): FATAL EXCEPTION: Thread-4902-06 15:07:52.815: ERROR/AndroidRuntime(503): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()02-06 15:07:52.815: ERROR/AndroidRuntime(503): at android.os.Handler.(Handler.java:121)02-06 15:07:52.815: ERROR/AndroidRuntime(503): at android.app.Activity.(Activity.java:680)02-06 15:07:52.815: ERROR/AndroidRuntime(503): at android.app.ListActivity.(ListActivity.java:175)02-06 15:07:52.815: ERROR/AndroidRuntime(503): at android.preference.PreferenceActivity.(PreferenceActivity.java:76)02-06 15:07:52.815: ERROR/AndroidRuntime(503): at com.tmall.iphone4s.manage.Preference.(Preference.java:62)02-06 15:07:52.815: ERROR/AndroidRuntime(503): at com.tmall.iphone4s.Check.run(Check.java:297)02-06 15:07:52.815: ERROR/AndroidRuntime(503): at java.lang.Thread.run(Thread.java:1019)02-06 15:07:52.864: WARN/ActivityManager(61): Force finishing activity com.tmall.iphone4s/.PlayAd发生错误原因：线程内未调用Looper.prepare()，不能创建处理器。
解决办法：在线程Check的run()中加入 Looper.prepare();
public void run() {// TODO Auto-generated method stubsuper.run();Looper.prepare();setting = new Preference(context);check();}