//第一种方法  直接跳转 id+编号        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"itms-apps://itunes.apple.com/app/id1018221712"]];        //第二中方法  应用内跳转        //1:导入StoreKit.framework,控制器里面添加框架#import <StoreKit/StoreKit.h>        //2:实现代理SKStoreProductViewControllerDelegate        SKStoreProductViewController *storeProductViewContorller = [[SKStoreProductViewController alloc] init];        storeProductViewContorller.delegate = self;        //加载一个新的视图展示        [storeProductViewContorller loadProductWithParameters:         //appId         @{SKStoreProductParameterITunesItemIdentifier : @"1018221712"} completionBlock:^(BOOL result, NSError *error) {             //回调             if(error){                 NSLog(@"错误%@",error);             }else{                 //AS应用界面                 [self presentViewController:storeProductViewContorller animated:YES completion:nil];             }         }];