检查我的应用程序已经在AppStore上的新版本 [英] Check if my app has a new version on AppStore

问题描述

我想手动检查是否有适合我的应用程序的新的更新，而用户是它，并提示他下载了新版本。我可以通过在应用程序商店检查我的应用程序的版本做到这一点？ - 编程

I would like to manually check if there are new updates for my app while the user is in it, and prompt him to download the new version. Can I do this by checking the version of my app in the app store - programatically?

推荐答案

下面是一个简单的code片段，让你知道如果当前的版本是不同的。

Here is a simple code snippet that lets you know if the current version is different

-(BOOL) needsUpdate{
    NSDictionary* infoDictionary = [[NSBundle mainBundle] infoDictionary];
    NSString* appID = infoDictionary[@"CFBundleIdentifier"];
    NSURL* url = [NSURL URLWithString:[NSString stringWithFormat:@"http://itunes.apple.com/lookup?bundleId=%@", appID]];
    NSData* data = [NSData dataWithContentsOfURL:url];
    NSDictionary* lookup = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];

    if ([lookup[@"resultCount"] integerValue] == 1){
        NSString* appStoreVersion = lookup[@"results"][0][@"version"];
        NSString* currentVersion = infoDictionary[@"CFBundleShortVersionString"];
        if (![appStoreVersion isEqualToString:currentVersion]){
            NSLog(@"Need to update [%@ != %@]", appStoreVersion, currentVersion);
            return YES;
        }
    }
    return NO;
}

的注：的确保，当你在iTunes中输入新的版本，这在你释放应用程序的版本匹配。如果没有，那么上面的code将始终如果用户返回的更新，无论是

Note: Make sure that when you enter the new version in iTunes, this matches the version in the app you are releasing. If not then the above code will always return YES regardless if the user updates.

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