方法一:
[[UIApplicationsharedApplication] openURL:[NSURLURLWithString:@"https://itunes.apple.com/cn/app/xxxx"]];
方法二:(推荐)
添加StoreKit,framework系统库，实现相应的代理方法
SKStoreProductViewController*store = [[SKStoreProductViewControlleralloc] init];
store.delegate =self;
[store loadProductWithParameters://appId唯一的
@{SKStoreProductParameterITunesItemIdentifier:@"appid"} completionBlock:^(BOOL result,NSError*error) {
} }]
//取消代理
- (void)productViewControllerDidFinish:(SKStoreProductViewController*)viewController{
];}
