{"action":"opened","issue":{"url":"https://api.github.com/repos/ibireme/YYKit/issues/40","labels_url":"https://api.github.com/repos/ibireme/YYKit/issues/40/labels{/name}","comments_url":"https://api.github.com/repos/ibireme/YYKit/issues/40/comments","events_url":"https://api.github.com/repos/ibireme/YYKit/issues/40/events","html_url":"https://github.com/ibireme/YYKit/issues/40","id":121450128,"number":40,"title":"使用YYkeychain 取值的时候 崩溃","user":{"login":"HWDW","id":12619808,"avatar_url":"https://avatars.githubusercontent.com/u/12619808?v=3","gravatar_id":"","url":"https://api.github.com/users/HWDW","html_url":"https://github.com/HWDW","followers_url":"https://api.github.com/users/HWDW/followers","following_url":"https://api.github.com/users/HWDW/following{/other_user}","gists_url":"https://api.github.com/users/HWDW/gists{/gist_id}","starred_url":"https://api.github.com/users/HWDW/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/HWDW/subscriptions","organizations_url":"https://api.github.com/users/HWDW/orgs","repos_url":"https://api.github.com/users/HWDW/repos","events_url":"https://api.github.com/users/HWDW/events{/privacy}","received_events_url":"https://api.github.com/users/HWDW/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-12-10T10:18:24Z","updated_at":"2015-12-10T10:18:24Z","closed_at":null,"body":"\tNSString *macCode=[YYKeychain getPasswordForService:@\"123\" account:@\"YXmacCode\" error:nil];\r\n\tif (macCode==nil) {\r\n\t\tmacCode=[NSString stringWithUUID];\r\n\t\t[YYKeychain setPassword:macCode forService:@\"123\" account:@\"YXmacCode\" error:nil];\r\n\t}\r\n\r\n在第一次运行的时候取空值是不报错的，再次运行取值就崩溃了"}}