NSString *aScheme = @"BaiduSSO://";

    NSString *aAppleId = @"382201985";

    NSURL*aAppUrl = [NSURL URLWithString:[NSString stringWithFormat:@"%@://", aScheme]];

//打开某个APP

    [[UIApplication sharedApplication] openURL:aAppUrl options:@{} completionHandler:^(BOOL success) {

        if (!success) {

//跳到App Store某个APP的详情页

           [self showAppStoreWithAppId:aAppleId];

        }

    }];

-(void)showAppStoreWithAppId:(NSString *)appId

{

    SKStoreProductViewController *appStore = [[SKStoreProductViewController alloc] init];

    appStore.delegate = self;

    [appStore loadProductWithParameters:@{SKStoreProductParameterITunesItemIdentifier:appId} completionBlock:^(BOOL result, NSError * _Nullable error) {

        if (error) {

            NSLog(@"错误 %@",error);

        } else {

        }

    }];

    [self presentViewController:appStore animated:YES completion:nil];

}

- (void)productViewControllerDidFinish:(SKStoreProductViewController *)viewController

{

    [viewController dismissViewControllerAnimated:YES completion:nil];

}