摘要：
object c求nsstring 长度和去掉前后空格的方法NSString *searchText = [[searchBar text] stringByTrimmingCharactersInSet: [NSCharacterSet whitespaceAndNewlineCharacterSet]]; if ([searchText length] > 0){ self.keyWordRecord.query = searchText; self.title = searchText; [self startDownLoadDataFromInternet]; } NSLog(@ 阅读全文
