摘要：
NSMutableArray *sortedArray; sortedArray = [array sortedArrayUsingComparator:^NSComparisonResult(id a, id b) { double first = [(People*)a getValueA]; double second = [(People*)b getValueA]; return second-first; }];更多：http://iphone.xiaoxiaostudio.net/2012/11/20/%E5%A6%82%E4%BD%95%E7%BB%99nsm... 阅读全文