service内部类发广播无效


代码如下：
 class PackageInstallObserver extends IPackageInstallObserver.Stub
   {
       public void packageInstalled(String packageName, int returnCode)
       {
           Log.i(TAG, "PackageInstallObserver:return code =========> " + returnCode);
           Log.i(TAG, "PackageInstallObserver:return packageName =========> " + packageName);
           if(mSharedPreferences.getString("InstallingPackageName", "").equals(packageName)){
            editor.putString("InstallingPackageName", "");
               editor.commit();
            Log.i(TAG, "clean the Prefer0ences!!!");
           }
           Intent installBroadcast = new Intent();
           installBroadcast.setAction("com.hw.apkinstaller.INSTALL_COMPLETE_BROCAST");
           installBroadcast.putExtra("PackageName", packageName);
           installBroadcast.putExtra("returnCode", returnCode);
           sendBroadcast(installBroadcast);
           Log.i(TAG, "22222222222222222222222222222222222222222222222222222222" + returnCode);
       }
   }
日志可以打到clean the Prefer0ences!!!这句但是打不到22222222222这里。
把sendBroadcast(installBroadcast);注释掉就可以。查了网上一些说法，在service里面重写了sendBroadcast方法。@Override
public void sendBroadcast(Intent intent) {
// TODO Auto-generated method stub
getServiceContext().sendBroadcast(intent);
}
这样还是不行    
求大神指点！！service   广播