Merge pull request #74 from heyongjian/master

fix bug:JOYL-107.crash when click the refresh button
fix bug:JOYL-107.crash when click the refresh button
Merge pull request #248 from lwanghaol/master

fix bug:JOYL-107.crash when click the refresh button
Merge pull request #249 from whuthm/master

fix bug JOYL-113,when there is no notwork,the database is not updated.
Merge pull request #105 from heyongjian/master

huangming:merge the main branch to native branch.