http://blog.csdn.net/huangkangying/article/details/7901602
瀹炵幇瑙傚療鑰呮ā寮忕殑榪囩▼
瀹炵幇瑙傚療鑰呮ā寮忔湁寰堝褰㈠紡錛屾瘮杈冪洿瑙傜殑涓縐嶆槸浣跨敤涓縐?#8220;娉ㄥ唽——閫氱煡——鎾ら攢娉ㄥ唽”鐨勫艦寮忋備笅闈㈢殑涓変釜鍥捐緇嗙殑鎻忚堪浜嗚繖鏍蜂竴縐嶈繃紼嬶細
1銆佽瀵熻呫銆錛圤bserver錛夊皢鑷繁娉ㄥ唽鍒拌瑙傚療瀵硅薄錛圫ubject錛変腑錛岃瑙傚療瀵硅薄灝嗚瀵熻呭瓨鏀懼湪涓涓鍣紙Container錛夐噷銆?
2銆佽瑙傚療瀵硅薄銆銆琚瀵熷璞″彂鐢熶簡鏌愮鍙樺寲錛堝鍥句腑鐨凷omeChange錛夛紝浠庡鍣ㄤ腑寰楀埌鎵鏈夋敞鍐岃繃鐨勮瀵熻咃紝灝嗗彉鍖栭氱煡瑙傚療鑰呫?br />3銆佹挙閿瑙傚療銆銆瑙傚療鑰呭憡璇夎瑙傚療鑰呰鎾ら攢瑙傚療錛岃瑙傚療鑰呬粠瀹瑰櫒涓皢瑙傚療鑰呭幓闄ゃ?
銆銆瑙傚療鑰呭皢鑷繁娉ㄥ唽鍒拌瑙傚療鑰呯殑瀹瑰櫒涓椂錛岃瑙傚療鑰呬笉搴旇榪囬棶瑙傚療鑰呯殑鍏蜂綋綾誨瀷錛岃屾槸搴旇浣跨敤瑙傚療鑰呯殑鎺ュ彛銆傝繖鏍風殑浼樼偣鏄細鍋囧畾紼嬪簭涓繕鏈夊埆鐨勮瀵熻咃紝閭ｄ箞鍙榪欎釜瑙傚療鑰呬篃鏄浉鍚岀殑鎺ュ彛瀹炵幇鍗沖彲銆備竴涓瑙傚療鑰呭彲浠ュ搴斿涓瀵熻咃紝褰撹瑙傚療鑰呭彂鐢熷彉鍖栫殑鏃跺欙紝浠栧彲浠ュ皢娑堟伅涓涓閫氱煡緇欐墍鏈夌殑瑙傚療鑰呫傚熀浜庢帴鍙ｏ紝鑰屼笉鏄叿浣撶殑瀹炵幇——榪欎竴鐐逛負紼嬪簭鎻愪緵浜嗘洿澶х殑鐏墊椿鎬с?/p>
#coding:utf8class Observer(object): """ 瑙傚療鑰呯被 """ def __init__(self,subject): #璁懼畾涓涓富棰?/span> self.subject = subject #鍚戣繖涓富棰樻坊鍔犺繖涓瀵熻?/span> self.subject.addObserver(self) #瑙傚療鑰呮寔鏈夋暟鎹?/span> self.fansnum = self.subject.fansnum def update(self,fansnum): self.fansnum = fansnum self.display() def display(self): print self.fansnum class Subject(object): """ 涓婚綾?br /> """ def __init__(self): #瑙傚療鑰呭垪琛?/span> self.observerList = [] self.fansnum = 0 #澧炲姞瑙傚療鑰?/span> def addObserver(self,observer): self.observerList.append(observer) #鍒犻櫎瑙傚療鑰?/span> def deleteObserver(self,observer): if observer in self.observerList: self.observerList.remove(observer) #閫氱煡瑙傚療鑰呰繘琛屾洿鏂?/span> def notifyObservers(self): for observer in self.observerList: observer.update(self.fansnum) #褰撳兼敼鍙樻椂閫氱煡瑙傚療鑰?/span> def setValue(self,fansnum): self.fansnum = fansnum #閫氱煡瑙傚療鑰?/span> self.notifyObservers()if __name__ == '__main__': subject = Subject() observer = Observer(subject) observer.display() subject.setValue(2) subject.setValue(3)
銆愯瀵熻呮ā寮忕殑浼樼偣鍜岀己鐐廣?/strong> 瑙傚療鑰呮ā寮忕殑緙虹偣錛?br />1銆佺敱浜庤瀵熻呭茍涓嶇煡閬撳叾瀹冭瀵熻呯殑瀛樺湪錛屽畠鍙兘瀵規敼鍙樼洰鏍囩殑鏈緇堜唬浠蜂竴鏃犳墍鐭ャ傝繖鍙兘浼氬紩璧鋒剰澶栫殑鏇存柊銆?/p>
銆愯瀵熻呮ā寮忛傜敤鍦烘櫙銆?/strong>
瑙傚療鑰呮ā寮忕殑浼樼偣錛?br />1銆佽瀵熻呭拰涓婚涔嬮棿鐨勮﹀悎搴﹁緝灝忥紱
2銆佹敮鎸佸箍鎾氫俊錛?/p>
1銆佸綋涓涓娊璞℃ā鍨嬫湁涓や釜鏂歸潰錛屽叾涓竴涓柟闈緷璧栦簬鍙︿竴涓柟闈€?br />2銆佸綋瀵逛竴涓璞＄殑鏀瑰彉闇瑕佸悓鏃舵敼鍙樺叾瀹冨璞★紝鑰屼笉鐭ラ亾鍏蜂綋鏈夊灝戜釜瀵硅薄寰呮敼鍙樸?br />3銆佸綋涓涓璞″繀欏婚氱煡鍏跺畠瀵硅薄錛岃屽畠鍙堜笉鑳藉亣瀹氬叾瀹冨璞℃槸璋併傛崲鍙ヨ瘽璇達紝浣犱笉甯屾湜榪欎簺瀵硅薄鏄揣瀵嗚﹀悎鐨勩?/p>
SunRise_at 2013-01-08 16:45 鍙戣〃璇勮]]>