{"action":"opened","issue":{"url":"https://api.github.com/repos/leewi9/test/issues/1","labels_url":"https://api.github.com/repos/leewi9/test/issues/1/labels{/name}","comments_url":"https://api.github.com/repos/leewi9/test/issues/1/comments","events_url":"https://api.github.com/repos/leewi9/test/issues/1/events","html_url":"https://github.com/leewi9/test/issues/1","id":93678238,"number":1,"title":"- 你需要先切换数据源再 reload","user":{"login":"chuangchen","id":12179671,"avatar_url":"https://avatars.githubusercontent.com/u/12179671?v=3","gravatar_id":"","url":"https://api.github.com/users/chuangchen","html_url":"https://github.com/chuangchen","followers_url":"https://api.github.com/users/chuangchen/followers","following_url":"https://api.github.com/users/chuangchen/following{/other_user}","gists_url":"https://api.github.com/users/chuangchen/gists{/gist_id}","starred_url":"https://api.github.com/users/chuangchen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/chuangchen/subscriptions","organizations_url":"https://api.github.com/users/chuangchen/orgs","repos_url":"https://api.github.com/users/chuangchen/repos","events_url":"https://api.github.com/users/chuangchen/events{/privacy}","received_events_url":"https://api.github.com/users/chuangchen/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-07-08T02:55:13Z","updated_at":"2015-07-08T02:55:13Z","closed_at":null,"body":"-(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component\r\n{\r\n\r\n#warning 当城市列在滚动时选择省份列，程序会崩溃；\r\n    \r\n    //只有当选择省份列的时候才会做如下操作\r\n    if (component == 0) {\r\n\r\n        \r\n        \r\n#warning - 你需要先切换数据源再 reload\r\n    \r\n        \r\n    //刷新数据\r\n    [pickerView reloadComponent:1];\r\n        \r\n    //让城市列每次首先都滚动到第0行\r\n    [pickerView selectRow:0 inComponent:1 animated:YES];\r\n        \r\n    }\r\n    \r\n}\r\n"}}